MENU

Recommended Service Bulletins for L-3 Vertical Gyros

April 2013

There are a couple Service Bulletins (SB) that L-3 Communications have issued for their vertical gyros that I highly recommend. They will reduce vibration issues and result in better drift characteristics, making the gyros more stable.

VG-206D

SB501-1204-19 (Rev. D), Modification 22 was issued in May 2005 to improve gyro performance by replacing the double row bearing on pitch axis with a single row bearing.

VG-208C

SB501-1210-15A, Modification 16 was issued in May 2001 to improve drift and vibration performance and eliminate potential of spring on pitch axis from rubbing on shield of bearing.

There are no costs to complying with these SBs, if they are accomplished during overhaul.

Gyros are an essential piece of business aircraft avionics equipment and you invest a lot of money to keep them airworthy. With proper gyro handling and storage methods, they can operate properly for many years. When it comes time to send in your gyro unit for overhaul, always follow the two-box method for shipping.  

Contact

Curt Campbell Avionics Tech Rep Challenger, Global, Hawker, King Air, Learjet Lincoln, NE (LNK) +1 402.479.4220

Related Tech Articles

ATG 5000, ATG 4000, ATG 2000/1000 Customers Facing Network Phase-Out
May 2023


5G Interference Survey. Weigh In About Potential Mandates
February 2023


Protecting Your Budget During Maintenance 
December 2022


CPDLC/ADS-C & Datalink Testing
November 2022


Obsolescence Of Universal Avionics Nav Database Download Devices
November 2022


View All Avionics Tech Articles