Airworthiness directives › 2012-12-22
AD 2012-12-22 Airworthiness Directives; BAE Systems (Operations) Limited Airplanes
Models named: BAe 146-100A, -200A, -300A, Avro 146-RJ70A, 146-RJ85A, 146-RJ100A. Read the applicability below — it usually turns on serial or part numbers too.
Applicability*9
This AD applies to BAE Systems (Operations) Limited Model BAe 146-100A, -200A, and -300A airplanes; and Model Avro 146-RJ70A, 146-RJ85A, and 146-RJ100A airplanes; certificated in any category; all serial numbers; on which the left-hand sidewall of the nose landing gear (NLG) bay has one of the following part numbers (P/N) installed: HC537L0002-000, -002, and -004; HC537H8021-000, -002, and -004; and HC537H8018-000.
Compliance
You are responsible for having the actions required by this AD performed within the compliance times specified, unless the actions have already been done.
Required actions
Before the accumulation of 12,000 total flight cycles or within 4,000 flight cycles after the effective date of this AD, whichever occurs later: Perform a high frequency eddy current inspection of the stiffeners on the left-hand sidewall on the NLG bay adjacent to the boss at the NLG retraction jack attachment pin hole, in accordance with the Accomplishment Instructions of BAE Systems (Operations) Limited Inspection Service Bulletin ISB.53-229, Revision 1, dated November 22, 2010. Repeat the inspection thereafter at intervals not to exceed 12,000 flight cycles, except as provided in paragraph (i) of this AD.
Unsafe condition
This AD was prompted by a report of a crack found on the left-hand sidewall well on the NLG. We are issuing this AD to detect and correct failure of the sidewall, which could result in consequent in-flight rapid decompression of the cabin and injury to the passengers.
Affected ADs
None.
Read the original on the Federal Register →
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The directive text above is reproduced from the Federal Register, a work of the United States government and in the public domain. The separation into applicability, compliance and required actions is TrackAD's.*1