AD Amdt-39-14076
Unsafe Condition
Failure of the fuel regulator shutoff valve, which could result in fuel leakage in aircraft with these combustion heaters.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Repetitively inspect the fuel regulator shutoff valve (visually or by pressure test) for fuel leakage. Replace the fuel regulator shutoff valve with an improved design replacement part with a manufacturer's date code of 02/02 or later if fuel leakage is found. Disable the heater as an alternative method of compliance.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Within 100 flight hours time-in-service (TIS) of the aircraft operating service.
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
Aircraft equipped with a fuel regulator shutoff valve part number (P/N) 14D11, A14D11, B14D11, C14D11, 23D04, A23D04, B23D04, C23D04, or P23D04 used with B1500, B2030, B2500, B3040, B3500, B4050, or B4500 B-Series combustion heaters.
AI-generated summary from the source AD text. Verify against the official source before acting.
Source: Official FAA Source ↗
Retrieved: Apr 4, 2026
Rights: U.S. Government Public Domain
This site is not affiliated with or endorsed by the FAA. Always verify with official sources.