FAA Orders Fuel Tank Fixes for Diamond Aircraft Safety Boost
Published Date: 12/23/2025
Proposed Rule
Summary
If you own or fly a Diamond Aircraft DA 40, DA 40 F, or DA 40 NG, the FAA wants you to update your plane’s fuel tank parts and inspections to keep things safe. This new rule updates previous fixes and adds fresh instructions for the DA 40 NG model. You’ll need to act before February 6, 2026, and while it might cost some money, it’s all about keeping your flight smooth and secure!
Analyzed Economic Effects
1 provisions identified: 0 benefits, 1 costs, 0 mixed.
DA40 fuel-hose replacement and inspections
If you own or operate a Diamond Aircraft Model DA 40, DA 40 F, or DA 40 NG airplane, this proposed rule would require replacing affected fuel tank connection hoses, inspecting the main fuel tank chambers, and removing any detached rubber material. You must do these actions within 100 hours time-in-service or within 2 months, whichever occurs first, after the effective date of the AD; as of the AD effective date, installing an affected part is prohibited. The FAA estimates the rule would affect 987 U.S.-registered airplanes and gives per-airplane cost estimates: inspection $85, removing detached rubber $425, and replacing the hose $1,233 (10 labor hours at $85/hr plus $383 parts).
Personalized for You
How does this regulation affect your finances?
Personalize government policy and PRIA will tell you what this federal register document means for your household, plus every other regulation we track. PRIA reads each provision against your financial profile 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.
2026-16803, Notice of Availability, Notice of Public Comment Period and Request for Comment on the Draft Environmental Assessment for Reditus Space ENOS Reentries in the Gulf of America
In accordance with the National Environmental Policy Act of 1969, as amended (NEPA) and FAA Order 1050.1G, FAA National Environmental Policy Act Implementing Procedures, the FAA is announcing the availability of and requesting comment on the Draft Environmental Assessment for Reditus Space ENOS Reentries in the Gulf of America (Draft EA).
2026-16795, Airworthiness Directives; The Boeing Company Airplanes
The FAA proposes to adopt a new airworthiness directive (AD) for certain The Boeing Company Model 737 -300, -400, and -500 series airplanes. This proposed AD was prompted by reports of nuisance stick shaker activation while accelerating to cruise speed at the top of a climb due to frozen angle of airflow (AOA) sensor vanes. This proposed AD would require installing new external case heaters (ECHs) on the left and right AOA sensors, performing repetitive functional tests and applicable corrective actions, and accomplishing applicable concurrent actions. The FAA is proposing this AD to address the unsafe condition on these products.
2026-16804, Establishment of Class E Airspace; Trading Bay Production Airport, Trading Bay, AK
This action proposes to establish Class E airspace extending upward from 700 feet above the surface at Trading Bay Production Airport, Trading Bay, AK. This action would support the safety and management of instrument flight rules (IFR) operations at the airport.
Previous / Next Documents
Previous: 2025-23773, Security Zones; Vessels Carrying Dangerous Cargo, Corpus Christi and La Quinta Ship Channels, Corpus Christi, TX
The Coast Guard wants to set up special security zones around ships carrying dangerous cargo in Corpus Christi’s ship channels to keep everyone safe from accidents or attacks. This new rule affects ship operators and the public, with security zones activated when needed. You’ve got until January 22, 2026, to share your thoughts—no extra fees, just safer waters ahead!
Next: 2025-23830, Agricultural Foreign Investment Disclosure Act: Revisions to Reporting Requirements
The USDA is updating rules for foreign folks who own or control U.S. farm land to make reporting clearer and stronger. These changes help protect family farms and boost national security by improving how info is collected and shared. If you’re a foreign landowner, get ready for new reporting steps starting soon—no extra fees, but don’t miss the deadlines!