Duncan Aviation logo

TR Added to Bombardier Learjet 20 and 30 Model Series Aircraft Maintenance Checks

September 2016

The Bombardier Learjet 20* and Learjet 30* series Time Limits and Maintenance Checks have recently added a new TR (Temp Revision) to Chapter 5-10-29. This TR includes a new IRN 3255002 for the required inspection of the Lear Avia Nose Wheel Steering Servos.

The Lear Avia servos are now required to be inspected every 2,400 hours, or 2 years from May 2, 2016, if they have never been inspected before.

Since these servos were on condition previously, we have found a number of them have very weak clutches from years of in-service operation. The new inspection will ensure that these discrepancies are corrected during a scheduled event rather than found during taxi, which may result in a missed flight or unexpected downtime.

20160916_082112 (Small)Lear Avia Nose Servos Part Numbers






*Trademarks of Bombardier Inc. or its subsidiaries.


Jerry Cable Accessory Tech Rep Astra, Challenger, Citation, Embraer, Falcon, Global, Gulfstream, Hawker, King Air, Learjet, Westwind Lincoln, NE (LNK) +1 402.479.8112

Related Tech Articles

Improper Use Of Maintenance Runners Could Cause Permanent Carpet Damage
June 2023

Have You Replaced Your Handheld Halon Type 1211 Portable Fire Extinguishers?
June 2023

LOI For An International Business Aircraft Transaction
May 2023

Four Ways To Improve Your Aircraft’s Interior
May 2023

Falcon Aircraft Tow Gear In Service
April 2023

View All Accessories Learjet Tech Articles