Airworthiness Directive · Amendment 39-9942 · BAE Systems (Operations) Limited Airplanes
BAE Systems (Operations) Limited Airplanes
This AD applies to BAE Systems (Operations) Limited Avro 146-RJ100A, Avro 146-RJ70A, Avro 146-RJ85A, BAe 146-100A, BAe 146-200A, BAe 146-300A.
The models as the FAA's AD index lists them. The serial ranges, installed parts and exceptions are in the AD itself: read it at the FAA.
This amendment adopts a new airworthiness directive (AD), applicable to certain British Aerospace Model BAe 146 series airplanes and Model Avro 146-RJ series airplanes, that requires inspections to detect leakage of hydraulic fluid from the lock jack assemblies of the main landing gear (MLG), and eventual replacement of those assemblies with new or serviceable assemblies. This amendment is prompted by reports of leakage of hydraulic fluid from lock jack assemblies due to a manufacturing forging defect that extends through the wall of the lock jack assembly. The actions specified by this AD are intended to prevent leakage of hydraulic fluid from the lock jack assemblies of the MLG, which, in conjunction with a hot brake, could cause a fire in the MLG bay.
