FAA Mandates Extra Checks on Helicopter Rotors
Published Date: 11/20/2025
Rule
Summary
If you fly an Airbus EC225LP helicopter, listen up! The FAA is updating safety rules to keep your main rotor gearboxes in top shape by adding more parts to watch, requiring regular checks and replacements, and tightening who can do the work. These changes kick in December 26, 2025, so owners should prepare for some extra maintenance that helps keep flights safe without breaking the bank.
Analyzed Economic Effects
7 provisions identified: 1 benefits, 5 costs, 1 mixed.
Mandatory 1,000‑hour replacement rule
If you operate an Airbus Helicopters Model EC225LP with the affected parts, within 10 hours time-in-service (TIS) after December 26, 2025 you must determine the total hours TIS of the right‑hand (RH) free wheel shaft. If it has 1,000 or more hours TIS you must replace the main rotor gearbox (MGB) or the RH free wheel shaft before further flight, and you must repeat replacement before any RH free wheel shaft accumulates 1,000 total hours TIS thereafter.
Optional terminating MGB replacement
For EC225LP helicopters with the parts in paragraph (c)(1), you may choose an optional terminating action: install an MGB P/N 332A32-5001-XX, 332A32-5002-XX, or 332A32-5003-XX with a main module (12-roller) and without MOD 07-53016 installed to terminate the AD's repetitive requirements.
Expanded parts applicability added
This AD expands applicability to add MGB part number 332A32-5004-XX with main module P/N 332A32-5400-00. The expanded applicability means helicopters with those MGBs are now subject to the AD's inspection, replacement, placard, and RFM requirements effective December 26, 2025.
Immediate placard and RFM revision
Within 10 hours TIS after December 26, 2025, you must install one or two self-adhesive placards on the instrument panel and revise the limitations section of the rotorcraft flight manual (RFM) by inserting specified text or this AD. The owner/operator with at least a private pilot certificate may make the RFM revision. The FAA estimates installing placards and revising the RFM takes 0.5 work-hour at $85/hour, an estimated $43 per helicopter.
Parts installation limitation rule
As of December 26, 2025, you may not install specified MGB part numbers (including P/Ns 332A32-5001-XX through 332A32-5004-XX with certain modules) on any helicopter unless you have first done the placard and RFM actions required by the AD.
Credit for prior compliant work
If you already performed the AD actions before December 26, 2025 in accordance with Airbus Helicopters Emergency ASB EC225-04A016 Revision 1, 2, or 3 (dates June 28, 2019; July 23, 2019; August 5, 2019), you get credit for the AD's required actions.
Who may perform required replacements changed
The AD changes the requirement for who can replace certain parts: the AD requires the actions be accomplished by persons authorized under 14 CFR 43.3 rather than by a specifically named Airbus Helicopter Specialist.
Your PRIA Score
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.
Key Dates
Department and Agencies
Related Federal Register Documents
2026-13126 — Designation-Restrict the Operation of Unmanned Aircraft in Close Proximity to a Fixed Site Facility; Extension of Comment Period
The FAA is giving more time—until August 5, 2026—for people to share their thoughts on new rules that would limit drone flights near important fixed sites like power plants or airports. This affects drone operators and facility owners who want to keep the skies safe and secure. No new costs yet, just extra time to weigh in and help shape the rules.
2026-08943 — Designation-Restrict the Operation of Unmanned Aircraft in Close Proximity to a Fixed Site Facility
The FAA is proposing new rules to keep drones away from certain important fixed sites like power plants or airports to keep everyone safe and secure. If you own or operate one of these sites, you can request a drone flight restriction zone to protect your property and people nearby. Comments are open until July 6, 2026, and these changes could affect drone pilots and site operators, but no big costs are expected.
2026-13237 — Agency Information Collection Activities: Requests for Comments; Clearance of a Renewed Approval of Information Collection: Flight and Duty Limitations and Rest RequirementsFlightcrew Members
The FAA wants to keep collecting info from airlines about when pilots fly or work longer than allowed and why. This helps spot patterns that could cause safety issues and supports pilot fatigue training. Airlines must keep reporting this, and the public can comment until July 31, 2026—no big cost changes, just keeping safety sharp!
2026-13282 — Mechanic Certification: Inspection Rating and Recent Experience Requirements
The FAA wants to swap the old inspection authorization for a new inspection rating on mechanic certificates, making it easier to keep privileges without renewals or expiration dates. Mechanics will need to keep up with recent experience on their own instead of proving it every couple of years. This change cuts paperwork, saves time, and helps mechanics focus more on safety, with comments open until August 31, 2026.
2026-13293 — Agency Information Collection Activities: Requests for Comments; Clearance of a Renewed Approval of Information Collection: Flight and Duty Limitations and Rest RequirementsFlightcrew Members
The FAA wants to keep collecting info from airlines about when pilots fly or work longer than allowed and why. This helps spot safety risks and improve pilot rest rules. Airlines must keep reporting this, and the public can comment until July 31, 2026—no big cost changes, just smarter safety checks!
2026-13257 — Decommission Remote Communications Outlets (RCOS) Used by Flight Service Stations Within the Conterminous United States, Hawaii, and Puerto Rico
The FAA is retiring 674 remote communication outlets (RCOs) used by pilots in the U.S., Hawaii, and Puerto Rico starting September 3, 2026. This change affects pilots relying on these stations for weather and flight info but keeps 262 outlets active to ensure safety and service. The move modernizes aviation communication without extra costs to users.
Previous / Next Documents
Previous: 2025-20472 — Federal Reserve Bank Capital Stock
The Federal Reserve is raising the asset threshold that decides how much dividend banks get on their Reserve Bank stock, adjusting it for inflation to $13.18 billion starting January 1, 2026. This change affects banks that own Reserve Bank stock and have total assets near this new cutoff. The update keeps dividend rules fair and reflects the economy’s growth, with the new rule kicking in December 22, 2025.
Next: 2025-20492 — Air Plan Approval; Minnesota; Exempt Source SIP Revision
The EPA is giving a thumbs-up to Minnesota’s updated air rules that make state and federal standards match up better. This change mainly affects small air pollution sources by clarifying their permit rules and adding some new exempt categories. The new rules kick in on December 22, 2025, with no extra costs expected for businesses or the state.