Honda Jet Owners: Ditch Rusty Flap Rods Now, FAA Demands
Published Date: 4/11/2025
Proposed Rule
Summary
If you own a Honda HA-420 airplane, the FAA wants you to swap out your flap control pushrods for a newer, rust-proof version. This update builds on a previous rule that had you clean and protect these parts regularly, but now the new parts mean less hassle and better safety. Comments on this proposal are open until May 27, 2025, so act fast if you want to weigh in!
Analyzed Economic Effects
4 provisions identified: 0 benefits, 4 costs, 0 mixed.
Must Replace Flap Pushrods Within 2 Years
If you own or operate a Honda Model HA-420 listed in the AD (Groups 1 and 2), you must replace the flap control pushrod assemblies with new corrosion‑resistant (zero hours TIS) pushrod assemblies within 2 years after the effective date of this AD. The FAA estimates this AD would affect 107 U.S. airplanes and the replacement cost is $7,038 per airplane (labor 22 work‑hours at $85/hour plus parts $5,168), totaling $753,066 for 107 airplanes.
Continue Cleaning and CIC Until Replacement
For Group 1 airplanes you must continue the retained requirements from AD 2021-22-12: within 90 days after November 19, 2021 (or 18 months after issuance of the first standard certificate of airworthiness, whichever is later) remove, clean, apply corrosion inhibiting compound (CIC), and reinstall the left and right inboard and outboard flap pushrod assemblies. You must reapply CIC thereafter at intervals not to exceed 90 days or 300 hours time‑in‑service, whichever occurs first. The FAA estimates the initial remove/clean/apply CIC action costs $1,870 per airplane and each reapplication costs $155.
Expanded Applicability Adds More Airplanes
This proposed AD expands applicability to include serial numbers 42000211, 42000212, and 42000215 through 42000287 (Group 2) in addition to the Group 1 serial numbers already covered. If your airplane’s serial number is within these ranges, the replacement and retained maintenance requirements apply to you.
Prohibited Installation of Certain Pushrod Parts
As of the effective date of this AD, you may not install flap control pushrod assembly part numbers HJ1-12754-875-001, HJ1-12754-875-003, HJ1-12754-885-001, or HJ1-12754-885-003 on any airplane.
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