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#2026-05264Özel Koşullar: Textron Aviation Inc. (Textron) Model MU-300-10, 400, 400A Uçakları; Şarj Edilebilir Lityum Piller ve Pil Sistemi Kurulumları

🇺🇸United States··Final Rule·Low Impact·Transportation Department, Federal Aviation Administration·View source ↗

AI-generated summary for informational purposes only. Not legal advice. See the original source for the authoritative text.

🇬🇧 English

The FAA is setting special safety requirements for Textron business jets (MU-300 and 400 series) being modified to include rechargeable lithium batteries in their emergency lighting systems. Since lithium batteries weren't anticipated when these jets were certified, new safety standards are needed. This affects operators and modification shops working on Hawker/Beechjet business aircraft. Lithium batteries offer better performance but require specific fire and failure protections due to known risks.

AI-generated summary. May contain errors. Refer to official sources for legal decisions.

Action

Final special conditions; request for comments.

Obligations

What this law requires

high

Emergency lighting power supply systems containing rechargeable lithium batteries must meet special safety standards equivalent to existing airworthiness standards for transport-category airplanes

Textron Aviation Inc., modification shops, aircraft operators installing lithium battery systems on MU-300-10, 400, and 400A airplanes
operational
high

Rechargeable lithium battery installations must include fire protection measures appropriate to the known risks of lithium battery failures

Textron Aviation Inc., modification shops performing battery system installations
operational
high

Battery system designs must incorporate failure protections to prevent hazardous conditions in the event of lithium battery malfunction or failure

Textron Aviation Inc., modification shops designing and installing battery systems
operational
high

Emergency lighting systems with rechargeable lithium batteries must be designed and installed in compliance with the special conditions issued for MU-300-10, 400, and 400A airplanes

Aircraft operators and modification shops working on affected Textron business jet models
operational