2025-20852Proposed RuleWallet

FAA Admits Helicopter Safety Oops, Issues Do-Over Rule

Published Date: 11/25/2025

Proposed Rule

Summary

The FAA is updating safety rules for certain Airbus Helicopters to fix mistakes in inspection schedules for the main gearbox parts. If you own or operate these helicopters, you’ll need to keep checking these parts regularly to stay safe. Comments on the new rules are open until January 9, 2026, and following them helps avoid costly repairs or accidents.

Analyzed Economic Effects

4 provisions identified: 2 benefits, 2 costs, 0 mixed.

Potentially large repair bills if particles found

If inspections find particles in the main gearbox, you may need on-condition work that can be costly: metallurgical analysis is estimated at $510, close monitoring $170 per cycle, a borescope inspection $85, replacing an epicyclic module about $55,284, and replacing a bevel reduction module about $23,260. The FAA says it cannot predict how many helicopters will need these corrective actions.

Less-frequent inspections for many models

If you own or operate certain Airbus helicopter models (AS350B, AS350B1, AS350BA, AS350D, AS355E, AS355F, AS355F1, AS355F2, AS355N, AS355NP), the FAA proposes changing the recurring inspection interval from 30 hours time-in-service (TIS) to 100 hours TIS, with initial inspections required 5 or 10 hours after May 9, 2025 depending on model. The FAA estimates an inspection takes 1 work-hour at $85 each and that the proposed AD would affect 522 U.S.-registered helicopters (total estimated recurring inspection cost per helicopter: $85).

More frequent checks for EC130B4

If you own or operate an EC130B4 helicopter, the FAA proposes changing the recurring inspection interval from 150 hours TIS to 100 hours TIS, with an initial inspection 5 hours after May 9, 2025. Each inspection is estimated at 1 work-hour ($85).

Operational flexibilities and limits

The proposed AD lets the owner/operator pilot (with at least a private pilot certificate) turn the tail rotor for the specified inspection action and requires that action be recorded in maintenance logs. The rule also allows a one-time, non‑revenue special flight permit with only essential flight crew to reach a location where required work can be done.

Your PRIA Score

Score Hidden

Personalized for You

How does this regulation affect your finances?

Sign up for a PRIA Policy Scan to see your personalized alignment score for this federal register document and every other regulation we track. We analyze your financial profile against policy provisions to show you exactly what matters to your wallet.

Free to start

Key Dates

Effective Date
Published Date
Comments Due
5/9/2025
11/25/2025
1/9/2026

Department and Agencies

Department
Independent Agency
Agency
Transportation Department
Federal Aviation Administration
Source: View HTML

Related Federal Register Documents

Previous / Next Documents

Back to Federal Register

Take It Personal

Get Your Personalized Policy View

Start a Free Government Policy Watch to see how policy affects your household, then upgrade to PRIA Full Coverage for year-round monitoring.

Already have an account? Sign in