Honda Jet Owners: Swap Those Flimsy Flap Rods Before They Rust
Published Date: 4/3/2026
Rule
Summary
If you own a Honda HA-420 airplane, listen up! The FAA says you need to replace your flap control pushrods with new, tougher ones that don’t need constant anti-rust treatments. This new rule kicks in on May 8, 2026, and helps keep your plane safe without extra hassle or cost from repeated maintenance.
Analyzed Economic Effects
3 provisions identified: 1 benefits, 2 costs, 0 mixed.
Mandatory Pushrod Replacement Rule
If you own or operate a Honda Model HA-420 airplane in the AD applicability, you must replace the flap control pushrod assemblies with redesigned, corrosion-resistant assemblies within 2 years after May 8, 2026 (deadline May 8, 2028). The FAA estimates the replacement labor and parts cost is $7,038 per airplane and that 107 U.S.-registered airplanes are affected (total estimated cost $753,066), although some costs may be covered under warranty.
Interim Corrosion Maintenance Requirement
For Group 1 HA-420 airplanes, you must keep removing, cleaning, and applying corrosion-inhibiting compound (CIC) to the flap control pushrod assemblies and reapply CIC every 90 days or 300 hours time-in-service until you replace the assemblies. The FAA estimates the initial remove/clean/apply action costs $1,940 per airplane and each CIC reapplication costs $155.
Prohibition on Installing Affected Pushrods
As of May 8, 2026, you may not install any inboard or outboard flap control pushrod assembly part numbers listed in the Effectivity section of Honda Alert Service Bulletin SB-420-27-009 Revision B (dated August 5, 2025). This prevents reinstallation of the identified (susceptible) parts going forward.
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