AD NUMBER:  2011-24-06

MANUFACTURER: BAE SYSTEMS (Operations) Limited Model BAe 146-100A, -200A, and -300A airplanes; and Model Avro 146-RJ70A, 146-RJ85A, and 146-RJ100A airplanes.
SUBJECT: Airworthiness Directive  2011-24-06
ACTION: Final rule

SUMMARY: The FAA is superseding an existing airworthiness directive (AD) that applies to all BAE SYSTEMS (Operations) Limited Model BAe 146-100A, -200A, and -300A airplanes; and Model Avro 146-RJ70A, 146-RJ85A, and 146-RJ100A airplanes. This AD results from mandatory continuing airworthiness information (MCAI) originated by an aviation authority of another country to identify and correct an unsafe condition on an aviation product.

The MCAI describes the unsafe condition as:

BAE Systems (Operations) Limited amended Chapter 05-10-15 of the AMM [aircraft maintenance manual] to introduce a new hydraulic filter assembly life limit and to remove the tables containing the Mandatory Life Limitations (Landings) on the Bolts and Pins as the information is now included in the SSID [supplemental structural inspection document] which is already mandated by the same AD.

In addition, BAE Systems amended Chapter 05-10-15 of the AMM to enable the use of RJ85 MLG [main landing gear] main fittings for lighter weight 146-200 aircraft using the same safe life of 50,000 Flight Cycles (FC) and the use of RJ100 MLG main fittings for lighter weight RJ85, 146-200 and 146-300 aircraft using the same safe life of 40,000 FC.

The unsafe condition is fatigue cracking of certain structural elements which could adversely affect the structural integrity of these airplanes.

DATES: This AD becomes effective January 3, 2012

FMI: AD