FAA Sets Lithium Battery Rules for Fancy Gulfstream Jets
Published Date: 4/16/2026
Rule
Summary
The FAA is setting new safety rules for Gulfstream G-IV, GIV-X, GV, and GV-SP airplanes modified by ALOFT AeroArchitects because they use rechargeable lithium batteries, which need extra care. These special conditions make sure the batteries are just as safe as older tech. The rules kick in on April 16, 2026, and folks can send comments until June 1, 2026.
Analyzed Economic Effects
1 provisions identified: 0 benefits, 1 costs, 0 mixed.
New Lithium-Battery Safety Rules for Gulfstreams
The FAA issued special conditions effective April 16, 2026, for ALOFT AeroArchitects’ supplemental type certificate to install a main-ship rechargeable lithium battery on Gulfstream Model G‑IV, GIV‑X, GV, and GV‑SP airplanes. The rule requires the battery and battery system to meet nine safety requirements, including: maintain safe cell temperatures and pressures; prevent thermal propagation and automatically control charge rate; not emit explosive or toxic gases; meet the flammable-fluid fire-protection standard in §25.863; avoid damage from corrosive fluids or gases; prevent hazardous heating effects; provide failure sensing and warning for the flightcrew; monitor and warn when charge state is too low if required for safe flight; and automatically disconnect from the charger on over-temperature or cell/battery failure.
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
2026-08943, Designation-Restrict the Operation of Unmanned Aircraft in Close Proximity to a Fixed Site Facility
The FAA wants to limit drone flights near important fixed sites like power plants or airports to keep people and property safe. Facility owners can ask for special drone flight restrictions, but they must prove it’s needed for safety or security. Comments on this plan are open until July 6, 2026, and these new rules could change how drone operators fly near sensitive places.
2026-09773, Airworthiness Directives; Airbus Helicopters
The FAA wants to make sure certain Airbus Helicopters have their engine parts installed correctly to keep flying safe. If you own or operate models like AS350 or EC130, you’ll need to check the main gearbox engine coupling soon and fix any problems found. Comments on this plan are open until June 29, 2026, and while inspections might cost some time and money, they’re key to avoiding bigger issues.
2026-09801, Airworthiness Directives; Stemme GmbH Gliders
If you own a Stemme S 12 glider, heads up! The FAA wants you to regularly check your fuel system for leaks caused by certain copper rings and replace any faulty ones. This keeps your glider safe and stops risky fuel leaks, with comments on the plan due by June 29, 2026.
2026-09802, Establishment of Class E Airspace; Winnie, TX
Starting October 29, 2026, the FAA is creating new Class E airspace around Griffith Ranch Airport in Winnie, TX. This change helps pilots fly safely using instruments, especially in bad weather. Local pilots and air traffic controllers will notice smoother, safer flights with no extra costs or delays.
2026-09771, Airworthiness Directives; Pilatus Aircraft Ltd. Airplanes
Pilatus PC-12 airplane owners and operators, heads up! The FAA is updating safety rules to fix a problem that could affect certain planes, meaning some extra checks or fixes might be needed. Comments on these changes are open until June 29, 2026, so now’s the time to speak up before any costs or work kicks in.
2026-09772, Airworthiness Directives; Diamond Aircraft Industries Inc. Airplanes
If you own a Diamond DA20-C1 airplane, the FAA wants you to check the emergency locator transmitter (ELT) because a missing wire might stop it from working in an emergency. They’re asking for a quick inspection and fixes if needed to keep you safe. Comments on this plan are open until June 29, 2026, and the fix should be pretty straightforward without breaking the bank.
Previous / Next Documents
Previous: 2026-07477, Rescinding Portions of Department of Commerce Title VI Regulations To Conform More Closely With the Statutory Text and To Implement Executive Order 14281
The Department of Commerce is updating its rules to match the original Civil Rights Act by removing parts about accidental discrimination and affirmative action. This change, effective April 16, 2026, helps avoid legal problems and lowers costs for businesses and organizations. It also follows a new executive order promoting fairness and opportunity for everyone.
Next: 2026-07484, Special Conditions: Honeywell International Inc., Boeing Model 757-200, 757-200PF, 757-200CB, and 757-300 Airplanes; Non-Rechargeable Lithium Batteries and Battery System Installation
The FAA is setting new safety rules for Honeywell’s installation of non-rechargeable lithium batteries in Boeing 757 airplanes’ underwater locator beacons. These special conditions make sure the batteries are just as safe as current standards require. The rules take effect April 16, 2026, and Honeywell must follow them while the public can comment until June 1, 2026.