Airworthiness Directive · Amendment 39-13991 · BAE Systems (Operations) Limited Model BAe 146 and Avro 146-RJ Series Airplanes
BAE Systems (Operations) Limited Model BAe 146 and Avro 146-RJ Series Airplanes
This AD applies to all BAE Systems (Operations) Limited Model BAe 146 and Avro 146-RJ series airplanes, certificated in any category.
The FAA is adopting a new airworthiness directive (AD) for all BAE Systems (Operations) Limited Model BAe 146 and Avro 146-RJ series airplanes. This AD requires repetitive detailed inspections of the center and rear fuselage skin including all the lap joints at stringers 2, 10, 19, and 30, and repair if necessary. This AD is prompted by evidence of cracking due to fatigue along the edges of certain chemi- etched pockets in the rear fuselage upper skin. We are issuing this AD to prevent a possible sudden loss of cabin pressure and consequent injury to passengers and flightcrew.
You are responsible for having the actions required by this AD performed within the compliance times specified, unless the actions have already been done.
Within the applicable compliance times specified in paragraph (f)(1) or (f)(2) of this AD, perform a detailed inspection to detect cracking of the center and rear fuselage skin, including all the lap joints at stringers 2, 10, 19, and 30, in accordance with the Accomplishment Instructions of BAE Systems (Operations) Limited Inspection Service Bulletin ISB.53-164, dated July 10, 2001.
Note 1: For the purposes of this AD, a detailed inspection is: “An intensive visual examination of a specific structural area, system, installation, or assembly to detect damage, failure, or irregularity. Available lighting is normally supplemented with a direct source of good lighting at intensity deemed appropriate by the inspector. Inspection aids such as mirror, magnifying lenses, etc., may be used. Surface cleaning and elaborate access procedures may be required.”
(1) For Model Avro 146-RJ series airplanes: Inspect before the accumulation of 10,000 total landings, or within 2,000 landings after the effective date of this AD, whichever is later.
(i) For areas where no crack is found, repeat the inspection at intervals not to exceed 4,000 landings.
(ii) For areas where any crack is found, before further flight, perform repairs in accordance with a method approved by the Manager, International Branch, ANM-116, Transport Airplane Directorate, FAA; or the Civil Aviation Authority (CAA) (or its delegated agent). No further inspection of any repaired area is required by this AD.
(2) For Model BAe 146 series airplanes: Inspect before the accumulation of 16,000 total landings, or within 4,000 landings after the effective date of this AD, whichever is later.
(i) For areas where no crack is found, repeat the inspection at intervals not to exceed 8,000 landings.
(ii) For areas where any crack is found, before further flight, perform repairs in accordance with a method approved by the Manager, International Branch, ANM-116; or the CAA (or its delegated agent). No further inspection of any repaired area is required by this AD.
Although the referenced service bulletin specifies to submit Appendix 1 of the service bulletin with certain information to the manufacturer, this AD does not require that action.
The aircraft, engines and makers this AD names, by the model designations in its text. A model listed here may still be outside the AD's serial ranges.
Aircraft
