Airworthiness Directives; Honda Aircraft Company LLC Airplanes
AI-generated summary for informational purposes only. Not legal advice. See the original source for the authoritative text.
The FAA is issuing a new Airworthiness Directive that supersedes AD 2021-22-12 for certain Honda HA-420 HondaJet airplanes. The original directive required cleaning the inner diameter of flap control pushrod assemblies and applying corrosion inhibiting compound (CIC) every 90 days or 300 hours TIS. This new rule retains those requirements for Group 1 airplanes while mandating the replacement of all affected flap control pushrod assemblies with improved, more corrosion-resistant designs that eliminate the need for repetitive CIC applications. The applicability is expanded to include additional serial numbers. The replacement must be completed within 2 years after the effective date of May 8, 2026. The FAA estimates the total cost at approximately $845,000 for 107 U.S.-registered airplanes.
AI-generated summary. May contain errors. Refer to official sources for legal decisions.
Key Changes
- Supersedes AD 2021-22-12 effective May 8, 2026
- Expands applicability to serial numbers 42000211, 42000212, and 42000215-42000287 (Group 2)
- Requires replacement of all flap control pushrod assemblies within 2 years after effective date using SB-420-27-009 Revision B
+ 3 more changes with Pro
Obligations
What this law requires
Remove and clean the inner diameter of flap control pushrod assemblies and apply corrosion inhibiting compound (CIC) to Group 1 airplanes
Reapply corrosion inhibiting compound (CIC) to flap control pushrod assemblies every 90 days or 300 hours time in service for Group 1 airplanes
Replace all affected flap control pushrod assemblies with improved, corrosion-resistant design pushrod assemblies for all affected airplanes
Complete replacement of flap control pushrod assemblies within 2 years after the effective date of May 8, 2026
Follow procedures specified in Honda Aircraft Company Alert Service Bulletin No. SB-420-27-009, Revision B, dated August 5, 2025, for replacing flap control pushrod assemblies