AD 2021-23-07
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Saab | AB | Airworthiness Directives; Saab AB, Support and Services (Formerly Known as Saab AB, Saab Aeronautics) Airplanes |
| aircraft | Aviat | Various | Airworthiness Directives; Saab AB, Support and Services (Formerly Known as Saab AB, Saab Aeronautics) Airplanes |
Unsafe Condition
The circuit breaker for the emergency cabin lighting tripped without fault in the system, leading to an insufficiently charged emergency battery, with consequent loss of cabin emergency lighting, possibly resulting in injury to occupants during an evacuation.
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Required Actions
Replace the 2LN circuit breaker having a rating of 5A with a new breaker having a current rating of 7.5A, as specified in EASA AD 2021-0058.
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Compliance Time
Within 50 flight hours
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Affected Aircraft
Saab AB, Support and Services (Formerly Known as Saab AB, Saab Aeronautics) Model SAAB 340B airplanes, certificated in any category, as identified in European Union Aviation Safety Agency (EASA) AD 2021-0058, dated March 1, 2021 (EASA AD 2021-0058).
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Source: Official FAA Source ↗
Retrieved: Apr 4, 2026
Rights: U.S. Government Public Domain
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