Airworthiness directives › 2014-19-02
AD 2014-19-02 Airworthiness Directives; Bombardier, Inc. Airplanes
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 4166 through 4175, inclusive.
Compliance
Comply with this AD within the compliance times specified, unless already done.
Required actions
Within 2,000 flight hours or 12 months after the effective date of this AD, whichever occurs first, do a proof load test for slippage and freeplay (relative movement between the bearing and fitting), in accordance with the Accomplishment Instructions of Bombardier Service Bulletin 84-27-44, Revision ‘B,’ dated February 11, 2014. If no slippage or freeplay is detected during the proof load test required by this paragraph, before further flight, identify the area with a marker and apply sealant if missing, in accordance with the Accomplishment Instructions of Bombardier Service Bulletin 84-27-44, Revision ‘B,’ dated February 11, 2014; and after identifying the area with a marker and applying sealant, no further action is required by this AD.
Unsafe condition
This AD was prompted by reports of rudder bearings falling out of the fore rudder hinge bracket during assembly. We are issuing this AD to detect and correct improper bearing installation, which could result in abnormal wear and potential increased freeplay in the rudder system, and resultant airframe vibration, leading to compromise of the flutter margins of the airplane.
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