Airworthiness directives › 2018-02-16
AD 2018-02-16 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 4001 and 4003 through 4488 inclusive, except those incorporating Bombardier ModSum IS4Q5200050.
Compliance
Comply with this AD within the compliance times specified, unless already done.
Required actions
Within 6,000 flight hours or 36 months after the effective date of this AD, whichever occurs earlier, do a detailed visual inspection of all translating fuselage door lift and latch shaft roller bearings for signs of corrosion, damaged seals, and loss of lubricant; replace any corroded bearings; and apply corrosion-inhibiting compound (CIC); in accordance with paragraph 3.B., “Procedure,” of the Accomplishment Instructions of Bombardier Service Bulletin 84-52-88, dated April 14, 2016.
Unsafe condition
This AD was prompted by reports of interrupted operation of translating fuselage doors caused by corrosion in the door lift and latch shaft roller bearings. We are issuing this AD to detect and correct bearing corrosion and prevent door operation interruptions that could inhibit safe evacuation of the airplane in an emergency.
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