Airworthiness directives › 2018-24-02
AD 2018-24-02 Airworthiness Directives; Dassault Aviation Airplanes
Models named: MYSTERE-FALCON 50, MYSTERE-FALCON 900, FALCON 900EX. Read the applicability below — it usually turns on serial or part numbers too.
Applicability*9
This AD applies to Dassault Aviation Model MYSTERE-FALCON 50, MYSTERE-FALCON 900, and FALCON 900EX airplanes equipped with blended winglets installed in accordance with the supplemental type certificate (STC) specified in paragraph (c)(1) or (c)(2) of this AD, as applicable. (1) For Model MYSTERE-FALCON 50 airplanes: STC ST02241SE. (2) For Model MYSTERE-FALCON 900 and FALCON 900EX airplanes: STC ST02188SE.
Compliance
Comply with this AD within the compliance times specified, unless already done.
Required actions
Within 8 months or 400 flight hours (FH), whichever occurs first, after the effective date of this AD, and thereafter at intervals not to exceed 8 months or 400 FH, whichever occurs first: Do a detailed inspection for cracking of the upper and lower reinforcing straps of the LH and RH ailerons, in accordance with the Accomplishment Instructions of Aviation Partners, Inc., Falcon Service Bulletin SBF9-17-001, Revision B, dated December 20, 2017. If any cracked aileron reinforcing strap is found, before further flight: Replace the reinforcing strap with a new part, in accordance with the Accomplishment Instructions of Aviation Partners, Inc., Falcon Service Bulletin SBF9-17-002, Revision A, dated December 20, 2017.
Unsafe condition
This AD was prompted by reports of cracked reinforcing straps (doublers) on the left-hand (LH) and right-hand (RH) ailerons of airplanes equipped with blended winglets. We are issuing this AD to address cracking of aileron reinforcing straps, which could lead to fatigue cracking of the ailerons and subsequent loss of control 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