FAA Mandates Engine Part Swaps for Safety Concerns
Published Date: 7/21/2025
Rule
Summary
If you own or operate certain CFM LEAP-1B engines, this new rule means you need to replace some turbine and compressor parts made from questionable metal. The FAA found more parts that might be risky, so they’re expanding the list and keeping the replacement rules in place. Act quickly to keep your engines safe and avoid costly problems down the road!
Analyzed Economic Effects
2 provisions identified: 0 benefits, 2 costs, 0 mixed.
Required replacement of LEAP-1B turbine and spool
If you own or operate certain CFM LEAP-1B engines (models LEAP-1B21, -1B23, -1B25, -1B27, -1B28, -1B28B1, -1B28B2, -1B28B2C, -1B28B3, -1B28BBJ1, and -1B28BBJ2), this rule keeps the requirement to replace certain high-pressure turbine (HPT) rotor stage 1 disks and a compressor rotor stages 6-10 spool. The Airworthiness Directive requires those parts to be replaced to address an unsafe condition caused by suspect material.
Expanded applicability to additional suspect disks
The rule expands the list of affected HPT rotor stage 1 disks to include additional parts made from material suspected to have reduced properties due to iron inclusion. If your engines contain those additional affected disks, they are now covered by the AD and must be addressed under the replacement requirements.
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
2026-13440 — Enabling Supersonic Overland Flight
The FAA wants to let supersonic planes fly over land again by updating old rules that banned them because of loud sonic booms. Thanks to new tech that keeps booms quiet, this change will open the door for faster, cooler flights across the U.S., helping America lead the world in supersonic travel. People and companies interested in supersonic flight should share their thoughts by August 17, 2026.
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.
2026-14248 — Establishment of Class E Airspace; Crown Point, IN
Starting October 29, 2026, the FAA is creating new Class E airspace around the Franciscan Health Crown Point Hospital Heliport in Crown Point, Indiana. This change helps pilots fly safely using instruments, especially in bad weather. If you fly helicopters or planes near this hospital, get ready for updated flight rules—no extra costs, just smoother skies!
2026-14205 — Amendment of Class D Airspace and Removal of Class E4 Airspace Over Nashua, NH
The FAA is updating the airspace rules over Nashua, NH by removing some unnecessary Class E airspace around Boire Field Airport and tweaking the Class D airspace wording to stay current. These changes take effect on October 29, 2026, and won’t cost anyone extra or cause delays. Pilots flying in and out of Nashua will notice clearer, simpler airspace rules that keep things safe and smooth.
2026-14281 — Airworthiness Directives; Rolls-Royce Deutschland Ltd & Co KG Engines
The FAA wants all Rolls-Royce Deutschland BR700-725A1-12 engines to follow new, stricter rules for checking and replacing parts that wear out over time. This means operators must update their maintenance plans to keep engines safe and sound. Comments on this proposal are open until August 31, 2026, so affected operators should act fast to avoid surprises and extra costs later.
Previous / Next Documents
Previous: 2025-13655 — Special Local Regulation; 100th Annual Pony Swim, Chincoteague Inlet and Surrounding Waters, Sector Virginia Captain of the Port Zone
The Coast Guard is setting up a temporary safety zone around Assateague, Chincoteague, and Wallops Islands for the 100th Annual Pony Swim event. If you’re not part of the event, you can’t enter or hang out in these waters without special permission during the event week. This keeps everyone safe and the ponies swimming smoothly!
Next: 2025-13664 — National Environmental Policy Act; Correction
This update fixes mistakes in the July 3, 2025, National Environmental Policy Act rule. It helps everyone involved—like government workers and project planners—get the right info without confusion. No new costs or deadlines, just clearer rules to keep things running smoothly!