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Airworthiness directives › 2012-20-04

AD 2012-20-04 Airworthiness Directives; Bombardier, Inc. Airplanes

2012-11-14
2012-10-10
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Airframe
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Models named: DHC-8-400, -401, -402. Read the applicability below — it usually turns on serial or part numbers too.

Applicability*9

This AD applies to Bombardier, Inc. Model DHC-8-400, -401, and -402 airplanes, certificated in any category, serial numbers 4001 through 4382 inclusive.

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

Within 3,000 flight hours or 18 months after the effective date of this AD, whichever occurs first: Perform a detailed inspection for chafing damage of the wire harness at the leading edge, in accordance with the Accomplishment Instructions of Bombardier Service Bulletin 84-57-24, Revision A, dated August 6, 2012. If any chafing damage is found: Before further flight, repair in accordance with the Accomplishment Instructions of Bombardier Service Bulletin 84-57-24, Revision A, dated August 6, 2012.

Unsafe condition

This AD was prompted by reports of chafing between the wire harness along the wing leading edge and the inboard end rib of the wing leading edge due to insufficient clearance. We are issuing this AD to detect and correct chafing damage to the wire harness along the wing leading edge, which if not corrected, could lead to the loss of the airframe de-icing system, and could become a possible ignition source causing fire.

Affected ADs

None.

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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