Airworthiness Directive · Amendment 39-14935 · BAE Systems (Operations) Limited Model BAe 146 and Avro 146-RJ Airplanes
BAE Systems (Operations) Limited Model BAe 146 and Avro 146-RJ Airplanes
This AD applies to BAE Systems (Operations) Limited Model BAE 146-100A, -200A, and -300A series airplanes; and Avro 146-RJ70A, 146-RJ85A, and 146-RJ100A airplanes; certificated in any category; as identified in BAE Systems (Operations) Limited Alert Inspection Service Bulletin ISB.57-a071, dated April 12, 2006.
The FAA is adopting a new airworthiness directive (AD) for certain BAE Systems (Operations) Limited Model BAe 146 and Avro 146-RJ airplanes. This AD requires repetitive inspections of the wing top skin under the rib 0 joint strap, and related investigative and corrective actions if necessary. This AD results from a report of a significant crack in the wing top skin under the rib 0 joint strap. We are issuing this AD to detect and correct corrosion and cracking in that area, which could result in reduced structural integrity of the wing.
You are responsible for having the actions required by this AD performed within the compliance times specified, unless the actions have already been done.
Inspect the airplane at the applicable time specified in paragraph 1.D. “Compliance” of BAE Systems (Operations) Limited Alert Inspection Service Bulletin ISB.57-a071, dated April 12, 2006, except, where the service bulletin specifies a compliance time after the date on the service bulletin, this AD requires compliance within the specified compliance time after the effective date of this AD. The inspection required by this paragraph involves an ultrasonic inspection for defects, including corrosion and cracking, of the wing top skin under the rib 0 joint strap at the outer row of fasteners, by doing all applicable actions specified in the Accomplishment Instructions of the service bulletin. Do all applicable related investigative and corrective actions before further flight in accordance with the service bulletin, except as required by paragraph (g) of this AD. Repeat the inspection at intervals not to exceed 4,000 flight cycles or 24 months, whichever occurs first.
BAE Systems (Operations) Limited Alert Inspection Service Bulletin ISB.57-a071, dated April 12, 2006, specifies two provisions not specified in this AD.
(1) No inspection report is required by this AD.
(2) As an option, the service bulletin allows repairs specified in an approved BAE Systems repair scheme. This AD instead requires any repair using this option to be done in accordance with a method approved by either the Manager, International Branch, ANM-116, FAA; or the European Aviation Safety Agency (or its delegated agent).
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.
