Posted by Diane Heiserman on Wed, May 15, 2013 @ 06:00 AM
Submitted by Dave Schiver, Airframe Tech Rep
This is an update to the Duncan Intelligence article I wrote in December of 2011 about an aging aircraft issue in regards to the Aux Cabin Heat in 20 & 30 Series Learjets not equipped with a Meggitt (formerly known as Keith Products) freon system. This topic was discussed during the NBAA Learjet Technical Committee meeting in February 2012, resulting in Learjet subsequently releasing AFM Temp Rev 2013-01.
Original Duncan Intelligence Article
Without a command from the crew, anytime the main ship batteries were turned on, all four of the heating coils in the Aux Cabin Heat system would power on and heat. Upon further investigation, it was discovered that both sides of the P/J-190 connector (ref 21-42-00 in your applicable W/D), that connects the main heating coil power going into the Aux Cabin Heat Relay box, was internally shorted. Both the P- and the J- side were shorted. As a result, anytime the battery charging buss was powered, which is when either Main Ship Battery or Generator is on-line, there was power to the heating coils of the Aux Cabin Heat system.
Internally shorted P/J-190 connector
If you check the W/D in regards to the power wires that normally go to the power relays (K17 and K18), you will notice the only protection is a single 150A current limiter (FL3).
Please Note
Since the “P” side is shorted, the heating coils will heat even without the Aux Cabin Heat Relay Panel (E33) installed in the aircraft. With this failure, ALL of the safety features on the control side are ineffective in disabling the heating coils. The only way to remove power from the heating coils is to turn OFF both generators and both main ship batteries. This leaves the Emergency Power Supply (EPS) providing the only electrical power for the aircraft. As per the 35 AFM, aircraft equipped with a single EPS will have electrical power available for approximately 30 minutes in this configuration.
P/J-190 connector Wiring Diagram
Dave Schiver is an Airframe Technical Representative at Duncan Aviation’s Lincoln, Nebr. (LNK) facility. He specializes in Learjet aircraft. His aviation career began in 1981.
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Posted by Diane Heiserman on Mon, May 13, 2013 @ 09:15 AM
Since 1956, aircraft operators have come to respect Duncan Aviation for the absolute best in service, sales and support for business and private aircraft. A a few of them took the time to let us know how much they enjoy working with Duncan Aviation.
Air Alsie, Denmark
- Klaus Rasmussen, Technical Manager
"Cost control is made easy by the use of Duncan Aviation’s web-based approval system, myDuncan.aero. Milestones can be followed, even if an operator is not on-site. I haven’t seen any other MRO with such a system.
"Duncan Aviation’s state of the art facilities and dedicated experts offer unique service. We receive very good support from Arjen Groeneveld, Duncan Aviation representative in Europe and we appreciate having a dedicated Project Manager with each event.
"At Duncan Aviation, final invoices are complete upon departure and our recent C-checks completed with them have not exceeded original budgets. This is much appreciated by our owners.”
Aircraft Serviced:
Sporavia, Spain
- Eduardo Jiménez Martín-Ventas, Maintenance Manager
"Working with Duncan Aviation is a real pleasure. At Sporavia we feel that it is important to give operators consistent quality, no matter where they are flying or where they are going to maintain their airplanes. Duncan Aviation holds those same values and so we look forward to working closely with them in the future.
"Duncan Aviation’s AOG support is quick and successful. Their European representative, Arjen Groeneveld, is always available to help operators get the services they need. In addition to AOG support, I have great respect for Duncan Aviation’s modifications and technical support.”
Beechcraft Berlin Aviation GmbH, Germany
– Edgar Boehlke, Managing Director
"We enjoy working with Duncan Aviation because their team is well educated and we always receive professional and competent support. We look forward to working with Duncan Aviation on more projects in the future.
"The friendly and competent sales and support teams at Duncan Aviation are appreciated by our logistics department. Duncan Aviation’s availability of spare parts and knowledge in international shipments provides us excellent support.
"Extensive projects involving engineering support from Duncan Aviation are handled professionally and there is always a solution oriented team from Duncan Aviation available for answering our questions."
Global Aviation and Piper Parts, Germany and United Kingdom
– Dieter Griesel, Board of Directors Member
"Duncan Aviation’s customer base extends far beyond what I can reach in Germany. They have the opportunity and ability to sell parts that we cannot.
Through Duncan Aviation’s consignment program, operators have a chance to profit from items that they would otherwise consider scrap. I could not have generated this money in sales in Europe. After many years, I find Duncan Aviation to be an excellent partner, serious and fair with everything. Take your surplus inventory, put it in a box and send it to Duncan Aviation today!"
Proserv Aviation, Unted States
– Dena Wozniak, Business Manager
"Proserv currently consigns more than 2.7 million dollars of inventory with Duncan Aviation. Items move at a quick pace. Every quarter, Duncan Aviation sells a few hundred line items from our inventory, an inventory that we no longer have to house.
We initially chose the Duncan Aviation Consignment Program because of their large customer base.
And Duncan Aviation’s market reach is impressive. Parts are listed in nearly a dozen parts locator services including Parts Base, Parts Inventory Locator Service (ILS) and Controller. These lists are updated daily, creating confidence in a buyer that inventory reports are accurate."
Samaritan's Purse, United States
– Franklin Graham, President and Pilot
"On my first trip to Duncan Aviation, I was flying cross country in a Cessna 180 when I landed in Lincoln for fuel. I was immediately impressed by its size, courtesy and how efficiently things operated.
Then there came a need to purchase an aircraft. I found a Falcon 50, but wanted another set of eyes to help me assess the aircraft. I thought of Duncan Aviation first.
I had always been awed with the many things that Duncan Aviation offered to an operator and assumed that the Aircraft Sales and Acquisition team would surely offer the same courteous support. I was not disappointed.
Purchasing an aircraft is complicated, but having someone who knows what they are doing makes it so much easier. Everyone I have ever worked with from Duncan Aviation has been professional. They have high quality people, with high standards and excellent work ethic."
Loves Travel Stops, United States
– Doug Stussi, Executive Vice President and Chief Financial Officer
"If you traveled to any Love’s location, it would be unusual to find an employee who has not met a Love family member. In addition, the Love’s Senior Management Team also has made it their goal to visit each location three times a year. When these are your values and your goals, you’ve got to have an aircraft.
Family ownership means a lot to the Love’s team. They live their family values and their personal values in the way they run their business. I see that alive at Duncan Aviation as well.
I have partnered with Doug Roth and Duncan Aviation through four aircraft acquisitions and the sale of one aircraft. I was hooked the first time we did business with Doug Roth. The level of customer service, stick-to-itiveness, get things done attitude and attention to detail is what stood out to me that first deal... and what has kept us coming back each time."
Integrated Management Services, LLC, United States
– Jeff Duvall, Chief Pilot
"Everyone at Duncan Aviation treats me like I belong. I can walk around the facility and have never felt like I did not belong or should not be there. Customers are welcome in the facility and have free access to their aircraft and the teams who work on them. I always look forward to returning to Lincoln, receiving top-notch maintenance and visiting friends.
I appreciate the access that I can have to my project when I’m not at the facility. The myDuncan application has been created by Duncan Aviation with customers’ needs in mind. I can go over everything with the project team, take some time to make the proper decision and then approve or disapprove items on myDuncan. The system allows easy access to project information and provides interactive management tools from anywhere."
Crystal Air, Unted States
– Dan Vignieri, Chief Pilot
"I first called Duncan Aviation’s RRT services in 2005 on the recommendation of my Honeywell Field Service Rep. I was instantly impressed. The team was quick to respond to my call and worked around my schedule. Their keen attention to detail made sure the job was done right. I’ve been calling ever since.
All they do is work on engines. I trust their expertise and knowledge. I haven’t once worried about their work and as long as I’m Chief Pilot, they will be the ones I will call on to do my engine work locally."
Sanderson Farms, United States
– Allen Ulmer, Director of Maintenance
"Duncan Aviation’s planning and scheduling process is unmatched. There is no comparison when it comes to efficiency and planning. Others could learn from Duncan Aviation’s process. I have been coming to the Lincoln facility for thirteen years and it is always the same, first class."
Join Us At EBACE!
Discover Duncan Aviation's complete business aircraft capabilities and unique company culture at EBACE, May 21-23 in Geneva, Switzerland.
Duncan Aviation is strategically located at the entrance to Hall 6 in Stand #327 alongside Avfuel. View the EBACE floor plan, here.
Duncan Aviation representatives will be on-site throughout the day.
For more updates from Duncan Aviation, please follow us on Twitter and become a fan on Facebook.
Posted by Diane Heiserman on Wed, May 08, 2013 @ 03:50 PM
Reproduced with permission from Avionics News, May 2013
Gary Harpster of Duncan Aviation addresses the Aircraft Electronics Association membership for the first time as chair of the board at the 2013 AEA International Convention & Trade Show in Las Vegas.
At the 2013 Aircraft Electronics Association International Convention & Trade Show, Gary Harpster of Duncan Aviation was elected as the new chair of the AEA board of directors. Recently, Patricia Luebke, Avionics News contributor, spoke with Harpster to learn more about his background and aspirations as AEA’s newest chairman.
What does being AEA’s chair of the board of directors mean to you?
One thing I’ve learned throughout the years is that people assimilate new information in a multitude of different fashions. I’ve always prided myself at being able to listen and not form any opinions until the final person has spoken. I hope I can use this characteristic in this new role. The AEA has been working hard to become a sound resource for accurate aviation information, so when we convey a message to the members, we need to be conscious about how it’s perceived. The AEA has a good track record, and I want to build on that.
Do you have a specific agenda in your new leadership role?
I’m not so sure I have a specific agenda, as much as a desire to contribute 110 percent of whatever is asked of me during this time. There are lots of different avenues a person could delve into, but I want to make sure the board supports a coordinated effort that returns the most benefit to the AEA members. I know one effort will be to introduce members to the various committees the AEA has and encourage more members to find a topic of interest and serve on a related committee. It is vital that we continue to seek opinions, network with each other and become more involved in our industry and its future.
Is there a particular area that interests you as chairman?
Duncan Aviation is the largest privately held MRO (maintenance repair and overhaul) facility in the world, so we not only work on a large variety of aircraft on a daily basis, we have worldwide exposure, as well. I’m hoping I can pass on ideas for other facilities to consider as work opportunities and/or solutions. Right now, the AEA has a great relationship with the FAA, so I’d like to get a chance to contribute ideas that would allow our members to do what they enjoy with a less cumbersome bureaucracy and, hopefully, fewer paperwork challenges
What is your background?
I grew up next to Eppley Airfield in Omaha, Neb. We lived about 3 miles from the airport, so whenever there was an opportunity, my sister and I would ride our bikes by the airfield and wait on the approach end of the runway for aircraft to pass overhead. As soon as they were right on top of us, we would stand up and let the prop blast blow us down the hill. This avionics was in the early 1960s, long before we had the security we have today. We would come home smelling like kerosene that permeated our clothes, so my mother knew right away where we’d been. I still can’t help but look up every time a plane passes overhead.
Click here to read Patricia Luebke’s complete interview with Gary Harpster.
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Posted by Diane Heiserman on Fri, May 03, 2013 @ 12:00 PM
Contributed by Jerry Cable, Accessory Tech Rep
Dry felt with damage to D-ring.
What-is-left-after-dry-felt-is-removed.
Corroded-felt-groove-area.
During recent inspections, Duncan Aviation accessory technicians have found corrosion on the pistons in the Main Actuator. This area becomes susceptible to corrosion when there is a lack of lubrication on the piston rod felt wiper. Without lubrication the felt absorbs water and begins to corrode the piston and aluminum housing. If corrosion develops, the piston must be sent out to be re-chromed at a minimum of a six-week downtime or replaced with a new unit. There is no repair for the aluminum housing, it must be replaced.
When the aircraft sits idle, the actuator is fully extended. This is when the shaft should be lubricated. Lubricating the piston rod felt wiper is a Chapter Five item. Refer to the Learjet Maintenance Manual for the proper procedures and frequency.
Scheduled to open in August of 2013, Duncan Aviation's Accessory Shop at its Lincoln, Neb., location, will gain approximately 6,300 square feet with the refurbishment and expanded footprint of its service area. Read more about how Duncan Aviation is investing today to be prepared for tomorrow in the Spring 2013 issue of the Duncan Debrief.
Jerry Cable is an Accessories Tech Rep located at Duncan Aviation’s Lincoln, Nebr., facility. He is a landing gear and accessory components and systems specialist. His aviation career began in 1991.
For more updates from Duncan Aviation, please follow us on Twitter and become a fan on Facebook.
Posted by Diane Heiserman on Wed, May 01, 2013 @ 01:00 PM
Contributed by Roger Ausbury, Sales Technical Specialist
Ed Boggs, Airframe Team Leader, discussing careers in aviation at Lakeview High School.
Recently Fred Wilkins Lead Airframe Mechanic, Ed Boggs, Airframe Team Leader and I attended Lakeview High School’s Parent-Teacher conferences in Battle Creek, Michigan. Alongside colleges, banks, military recruiters and school clubs, Duncan Aviation had a booth.
I’m sure you’re wondering, “What is an aviation company is doing at a Parent-Teacher conference?” Well, consider this. How many times has a message from school actually made it home to you, the parent? From my own personal experience with my sons, whenever the communication actually did make it home it was cryptic, vague and sometimes had no resemblance of the intended message.
To bridge the communication gap between the school and home, Lakeview High School started to invite local businesses and organizations to Parent-Teacher conferences to be available should parents have questions about a potential involvement with their student.
Our goal in attending this event was to make students, parents, teachers and administrators aware of careers in aviation and specifically what we do at Duncan Aviation. We also wanted to share information about the future of aviation and the projected high demand for technicians.
Many parents and teachers asked us about the closing of the control tower at the Battle Creek airport and how it would affect our business. We assured them that aircraft will continue to come to Duncan Aviation for maintenance needs. The closing of the control tower will now require pilots to communicate with other aircraft through radio headsets; and that there are many uncontrolled airports around the country that pilots frequent.
During the conference, a family was browsing nearby when the father suggested his son talk with us about future career opportunities. Not interested the son said, “No, I want to go into Engineering.” Having heard this, Fred Wilkins grabbed a Duncan Engineer Career Sheet to the young man and said, “Here you go.” The dad smiled, the son said “Oh” and mom winked at Fred.
After a conversation about what Duncan Aviation is all about, they took more of our materials and continued on. The dad later returned to talk further about aviation.
In a nutshell that was how nearly all our conversations that evening went, as people by and large are unaware of what a career in aviation has to offer. Because of our presence at a high school Parent-Teacher conference, there are now about 25 more people who are aware.
Duncan Aviation is committed to encouraging future generations to get interested in careers in aviation. Every year, many Duncan Aviation representatives attend and talk to thousands of High School students, parents and teachers, educating them about the wide range of career opportunities available.
Duncan Aviation Recruiting Events
The following are recent career recruiting events attended by representatives from Duncan Aviation attended.
February 21-22 – Wyotech: Collision/Refinishing and Trim & Upholstery programs, Blairsville, PA
February 28 – Purdue Aviation Technology Career Fair, West Lafayette, IN
March 21 – Joint Base Langley-Eustis Job Fair in Fort Eustis, VA (Military)
March 27 – Lakeview High School, Michigan (High School)
April 2 – Hiring our Heroes, Lincoln, NE (Military)
April 5 – WMU School of Aviation Career Fair, Battle Creek, MI
April 11 – Hiring our Heroes, Battle Creek, MI (Fort Custer)
April 16 – Duncan Aviation job shadowing and tours for High School sophomores. Battle Creek, MI
April 19 – Harper Creek Middle School Career Exploration Day, Battle Creek, MI
April 25 – Marshall High School Career Fair, Marshall, MI
May 7 – Aviation Workforce Development Think Tank - Industry Leaders meeting in Minneapolis to brainstorm ideas on how to address a looming technician shortage in our industry.
May 21 – Duncan Aviation Career Day at Aviation Institute of Maintenance Kansas City, MO
June 11 – Otsego Middle School (7th & 8th Grade) Career Exploration Day, Otsego, MI
July - MCAS Miramar, San Diego, CA
More Than a Paycheck
Nowhere are aviation jobs more sought after than at Duncan Aviation. With a retention rate unheard of in the industry, a job at Duncan can come to mean way more than just a paycheck. For many, it's acquiring a level of expertise that is sought after and respected by OEMs and suppliers alike.
Click here to view current job openings at all Duncan Aviation locations.
Roger Ausbury is the Sales Technical Specialist located at Duncan Aviation's Battle Creek, Michigan, facility. Besides providing airframe sales support, he specializes in helping people not take themselves so seriously, dream interpretation and uniting Minnesota Vikings fans everywhere. His aviation career began in 2002.
For more updates from Duncan Aviation, please follow us on Twitter and become a fan on Facebook.
Posted by Diane Heiserman on Thu, Apr 25, 2013 @ 01:12 PM
Contributed by Dave Ungvarsky, Airframe Tech Rep
The Main Entry Door on Hawker aircraft is durable and very reliable. And by adding these basic operational measures, you will ensure years of continued problem-free service.
1) Door Stay with loose rivets, 2) Entry door lever and shaft, 3) Door Maintenance Cables
Lubrication
In addition to normal door lubrication, the top and bottom door stay and hinge shaft linkages deserve some attention. Make it a point to keep them lubricated and clean.
Door Support Cables
The use of door support cables during servicing and maintenance will go a long way in reducing wear in the door stays and hinge shafts.
One Person at a Time
The policy of allowing only one passenger on the steps while entering or exiting the aircraft will also help in reducing wear.
There are several areas on the Main Entry Door where we have found wear, these include elongated bolt holes in the entry door lever to the entry door shaft and loose rivets in the door stay top and bottom tubes and fork end. Repairs for these items can be found in the Structural Repair Manual. Loose rivets and elongated bolt holes can be readily detected by applying weight to the last step and observing the amount of movement and its location. Prompt detection and repair will reduce the likelihood of costly parts replacement.
Duncan Aviation is still a Hawker Service Center
In light of the recent changes in the industry for Hawker operators, I want to remind you that Duncan Aviation continues to provide comprehensive
Hawker aircraft service and support at all Duncan Aviation locations around the world. We are an industry leader in Hawker maintenance, structural repair, landing gear/component overhauls, engine MPIs, avionics upgrades, paint and interior. Our experience and capabilities are second to none. For more information about your options as a Hawker operator, contact any one of the many
Duncan Aviation Hawker experts
Dave Ungvarsky is an Airframe tech rep located at Duncan Aviation's Lincoln, NE, location, specializing in the Hawker aircraft. His aviation career began in 1978.
For more updates from Duncan Aviation, please follow us on Twitter and become a fan on Facebook.
Posted by Diane Heiserman on Wed, Apr 17, 2013 @ 10:06 AM
Duncan Aviation recently welcomed four additional Regional Managers to support operators worldwide. Richard Gardner, Allan Orsi, Andy (Anand) Fernandes and Rodolfo Rodriguez join Arjen Groeneveld, Regional Manager in Europe, in an effort to better support customers throughout the world. Each Regional Manager travels their region, meeting with aircraft operators, management organizations and other service providers with the goal of maintaining and building relationships, providing customer service, listening to operators and learning more about each region’s regulatory issues and processes while engaging in industry forums.
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Brazil
Allan Orsi is located in Sao Paulo, Brazil. He has prior work experience with Honeywell do Brasil, Embraer, Bosch and Aerostation. Allan has a Bachelor of Science degree in Mechanical Engineering and an International Trade Technical degree. Contact Allan Orsi.
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India
Andy Fernandes supports India. He has been with Duncan Aviation since 1999 and will continue his current responsibilities as an Avionics Installations Sales Rep, serving a dual role as he supports operators in India, traveling to India several times a year. Andy holds a bachelor’s degree in Aviation Maintenance and a master’s degree in Aviation Safety. He has worked for Swiss Air and as a mechanic and project manager for Duncan Aviation in Lincoln. Contact Andy Fernandes.
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Mexico
Rodolfo Rodriguez supports Mexico. Prior to joining Duncan Aviation, he was a Naval Officer for the Mexican Navy, retiring after 21 years of service. Rodolfo has a Naval Sciences degree in Engineering and is authorized for internal combustion engines and gas turbine engines. Make it a point to attend the Aero Expo April 18-20 in Toluca, Mexico, and stop by Duncan Aviation’s booth #21 to visit with Rodolfo and other Duncan Aviation representatives. Contact Rodolfo Rodriguez.
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New Zealand
Richard Gardner supports the regions of Australia and New Zealand. His experience includes employment with Air New Zealand and Pacific Turbine and owner of SinglePoint Assist, an international AOG support network. He holds many licenses including an Airframe & Powerplant from the Federal Aviation Administration, Civil Aviation Authority Airframe and Engine license and licenses in New Zealand, Latvia, Trinidad and Tobago. Contact Richard Gardner.
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“With these Regional Managers now located in key areas around the world, Duncan Aviation can continue to provide support to operators and maintenance organizations while learning the industry nuances present in each region,” says John Slieter, Vice President of Sales for Duncan Aviation. “They are a group of enthusiastic aviation professionals. Each one has a strong desire to assist operators in safe and efficient flying.”
Experience. Unlike Any Other.
Duncan Aviation is the largest, family-owned maintenance, repair and overhaul (MRO) facility in the world providing complete acquisition sales and support services for business aircraft. We provide premier aircraft services–delivered on time–for a wide variety of business aircraft at our facilities across the United States.
For more updates from Duncan Aviation, please follow us on Twitter and become a fan on Facebook.
Posted by Diane Heiserman on Tue, Apr 16, 2013 @ 06:00 AM
At Duncan Aviation, we believe our most valuable assets are our team members. Each one has a story to tell that exemplifies the Duncan Aviation above-and-beyond attitude we have for our customers. And each one will tell you that what they do is “all in a day’s work.”
Regis Biarrieta, Rapid Response Engine Technician, flew to a country amid political uncertainty to help a customer and flew out just in time.
When your aircraft is AOG in another country amid political election uncertainty, do you have a Rapid Response Team who will work with a sense of urgency and get you flying before the airport is shut down?
Meet Regis Biarrieta
Just days before the presidential election in Venezuela and the threat of a possible airport shutdown, Regis Biarrieta, Rapid Response Engine Technician, battled road closures and heightened security to get a stranded customer’s aircraft up and running. He succeeded, just in the nick of time.
Duncan Aviation received word a customer’s engine was leaking oil and a mechanic was needed as soon as possible. To complicate an already undesirable situation, the Venezuelan elections were concluding in five days and rumors were flying that the airport would be shut down and all aircraft with N-Numbers would be grounded.
The customer planned to fly Engine Tech Regis Biarrieta out on his backup aircraft, but it was experiencing some mechanical difficulties, so he opted to fly Regis commercially and wound up sending him to another part of the country less affected by the election-related security.
Just a few hours later, Regis made his way to Simon Bolivar International Airport of Maiquetia where the aircraft was parked and immediately began troubleshooting to identify the parts he needed – all while next to the heavily-guarded Presidential hangar. He located the necessary parts at an airport just an hour away, but the roads were closed, rendering them useless.
With just a few days left and an ever-increasing sense of urgency, Regis decided to call his team lead back in Florida to track down and expedite the parts. Fortunately, the customer’s other jet was up and running and ready to leave Tampa, Florida. The pilot picked up the parts on his way out of the United States.
Using an alternate airport and land route, the parts arrived. Regis fixed the engine and as they were taxiing out, he noticed they were the very last corporate aircraft with an N-Number left in the airport. He breathed a sigh of relief as they departed – just in time.
Duncan Aviation has team members from the Australia to Florida and our backgrounds are even more diverse. But a common thread that ties us all together is an inherent sense of doing the right thing and a positive attitude that allows us to be a step above the rest.
It’s the people within a company who create such a strong brand. Duncan Aviation is an experience, unlike any other. We share stories like this one within the company daily as a reminder to all team members just how much our customers mean to us and what it takes to create that exceptional experience time and time again.
If you’d like to read more stories like this one, visit www.DuncanAviation.aero/experience.
For more updates from Duncan Aviation, please follow us on Twitter and become a fan on Facebook.
Posted by Diane Heiserman on Thu, Apr 11, 2013 @ 06:00 AM
Submitted by Scott McKenzie, Avionics Tech Rep
Last summer I wrote an article about the importance of complying with Airworthiness Directive (AD) 2010-07-02 before the deadline of November 3, 2012. This AD is applicable to the Honeywell RNZ-850/851 Integrated Navigation Units (INU) and addresses possible erroneous glide slope or localizer display indications. The deadline has since come and gone, however, at Duncan Aviation we continue to field phone calls from operators who have discovered their AD had been signed off as being complied with, when in fact, it has not. Cessna released CIL-34-02 on March 18, 2013, to address this issue.
Honeywell RNZ-850/851 Data Plates
There are two data plates on the Honeywell RNZ-850/851 INU. One is on the front, the other on the bottom. There is confusion about which data plate should be inspected to determine if your unit is in compliance with AD 2010-07-02. The answer is BOTH. Two conditions must be met in order for the unit to be in compliance.
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Condition #1: Front Data Plate
Closely inspect the mod data plate on the front of the unit. In order to be compliant, the square with the “AS” must be blocked out. |
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Condition #2: Bottom Data Plate
Next inspect the status of the mod data plate on the bottom of the unit. In order to be compliant, the square “T” must be blocked out. |
Important Note
Your unit is only in compliance with AD 2010-07-02, when BOTH of these conditions are met.
Duncan Aviation can perform the modification necessary to comply with AD2010-07-02. Contact a Duncan Aviation Avionics Tech Rep for more information.
Scott McKenzie is an avionics tech rep located in Duncan Aviation's Lincoln, Nebraska, facility. He specializes in troubleshooting the latest in avionics systems installed on aircraft today. His aviation career began in 1995.
For more updates from Duncan Aviation, please follow us on Twitter and become a fan on Facebook.
Posted by Diane Heiserman on Tue, Apr 09, 2013 @ 06:00 AM
Submitted by Dave Schiver, Airframe Tech Rep
On March 27th, the FAA issued two Notices of Proposed Rulemaking (NPRM) for Learjet 60 and Learjet 40/45. Continue reading for details.
Learjet 60
The FAA has proposed an upcoming Airworthiness Directive (AD) for Squat Switch & Anti-Skid Shielding on certain model Learjet 60 aircraft. You are encouraged to read the details of and comment about the proposed AD during the open commenting period which ends on May 13, 2013. Details of the Notice of Proposed Rulemaking can be found here.
Required Service Bulletins
This proposed AD will require the installation of the following Service Bulletins (SB): SB60-32-33 & SB60-57-7. These SBs install the metal shielding around the Main Landing Gear (MLG) Squat Switches & MLG Anti-Skid Valves to protect them in case of an accidental impact.
Terminating AD 2010-11-11
The above SBs are two of the four required SBs to terminate AD 2010-11-11. This AD is the 96-Hour Tire Pressure check, per the FAA Alternate Method Of Compliance (AMOC) Letter L115W-12-459. The other required SBs are SB60-27-6, Wheel Speed Detect Box, and SB60-78-7, Thrust Reverser (TR) Interface Box.
Another requirement called out in the AMOC is for the Temporary Flight Manual Change (TFM) 2012-03 to be inserted in the Airplane Flight Manual (AFM). Bombardier first published this information in AW32-061 on July 30, 2012.
SB60-78-7
As a side note, in order to comply with SB60-78-7, the Wheel Speed Detect Box, if previously installed, may need to be exchanged in order to be upgraded for compatibility with the TR Interface Box.
Learjet 40/45
The FAA has proposed an upcoming AD for the Baggage Door Fire Seal of certain model Learjet 40/45 aircraft. You are encouraged to read the details of and comment about the proposed AD during the open commenting period which ends on May 13, 2013. Details of the Notice of Proposed Rulemaking (NPRM) can be read here.
Required Service Bulletins
The proposed AD requires the installation of SB40-25-25, Revision 3, or SB40-25-25, Revision 3, within 300 flight hours after the effective date of the AD. These SBs call for the modification of the fire seal on the baggage door, including doing general visual inspections of the fire seal for correct contact.
Exceptions
If Revision 1 or 2 of SBs SB40-25-25 / SB45-25-35 have been complied with prior to the effective date of this proposed AD, no further action is required.
All of Duncan Aviation's full-service locations are Authorized Learjet Service Centers, and are able to provide comprehensive Learjet airframe services, inspections and technical support for all models.
Dave Schiver is an Airframe Technical Representative at Duncan Aviation’s Lincoln, Nebr. (LNK) facility. He specializes in Learjet aircraft. His aviation career began in 1981.
For more updates from Duncan Aviation, please follow us on Twitter and become a fan on Facebook.