Airworthiness Directive · Amendment 39-23229 · Aileron control system
Honda Aircraft Company LLC Airplanes
This AD applies to Honda Aircraft Company LLC (Honda) Model HA-420 airplanes, serial numbers 42000172, 42000235 through 42000265, and 42000267 through 42000272, certificated in any category, with aileron balance weight part number HJ1-15751-152-003 or HJ1-15751-157-003 installed.
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 the discovery of a gap between the trailing edge wing nut plates and leading edge aileron balance weights being less than the minimum required clearance. This AD requires replacing the affected left and right aileron fixed balance weights with reduced geometry fixed balance weights. The FAA is issuing this AD to address the unsafe condition on these products.
Before further flight after the effective date of this AD, replace the left and right aileron fixed balance weights in accordance with steps 3.0(3) through 3.0(8) of the Accomplishment Instructions in Honda Aircraft Company Service Bulletin No. SB-420-27-011, Revision B, dated December 12, 2024, except as provided in paragraphs (g)(1) through (3) of this AD.
(1) Instead of discarding parts, you must remove those parts from service.
(2) This AD does not require returning parts to the manufacturer.
(3) Instead of contacting Honda if proper aileron balance cannot be attained using adjustable balance weights, this AD requires attaining proper aileron balance using a procedure approved by the Manager, East Certification Branch, FAA.
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
