Airworthiness Directive · Amendment 39-21785 · Trailing edge flap actuator
Honda Aircraft Company LLC Airplanes
Superseded. A later AD replaced this one: AD 2026-06-71. Comply with the one in force.
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.
The FAA is adopting a new airworthiness directive (AD) for certain Honda Aircraft Company LLC (Honda) Model HA-420 airplanes. This AD was prompted by a report that the flap pushrod assemblies are susceptible to corrosion. This AD requires removing and cleaning the inner diameter of the flap control pushrods and repetitively applying corrosion inhibiting compound (CIC) to this area. The FAA is issuing this AD to address the unsafe condition on these products.
(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.
The aircraft, engines and makers this AD names, by the model designations in its text. A model listed here may still be outside the AD's serial ranges.
Aircraft
