Airworthiness directives › 2021-22-12
AD 2021-22-12 Airworthiness Directives; Honda Aircraft Company LLC Airplanes
Models named: HA-420. Read the applicability below — it usually turns on serial or part numbers too.
Applicability*9
This AD applies to Honda Aircraft Company LLC Model HA-420 airplanes, serial numbers 42000153 through 42000158 and 42000160 through 42000206, certificated in any category.
Compliance
Comply with this AD within the compliance times specified, unless already done.
Required actions
(1) Within 90 days after the effective date of this AD or 18 months after issuance of the first standard certificate of airworthiness, whichever occurs later: Remove, clean, apply corrosion inhibiting compound (CIC) to, and reinstall the left and right inboard and outboard flap pushrod assemblies by following steps 3.0(3) through 3.0(6) of the Accomplishment Instructions in Honda Aircraft Company Service Bulletin No. SB-420-27-008, dated August 31, 2021. (2) Within 90 days or 300 hours time-in-service (TIS), whichever occurs first after accomplishing the actions required by paragraph (g)(1) of this AD, and thereafter at intervals not to exceed 90 days or 300 hours TIS, whichever occurs first: Reapply CIC by following step 3.0(5)(a) through (c) of the Accomplishment Instructions in Honda Aircraft Company Service Bulletin No. SB-420-27-008, dated August 31, 2021.
Unsafe condition
This AD was prompted by a report that the flap pushrod assemblies are susceptible to corrosion. The FAA is issuing this AD to prevent failure of the flap control pushrod. The unsafe condition, if not addressed, could result in uncontrolled and un-annunciated flap asymmetry with consequent 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