AD 2021-03-17
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Bombardier | Various | Airworthiness Directives; Bombardier, Inc., Airplanes |
Unsafe Condition
smoke and signs of an overheating condition from the emergency light battery (ELB) due to excessive corrosion surrounding the internal lead acid batteries, which caused an electrical short circuit that led to the smoke and overheating condition.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
an inspection to determine the last replacement date of the ELB, and replacement if necessary, and the incorporation of a new maintenance task into the existing maintenance or inspection program.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Within 48 months after the last replacement date or manufacturing date of the ELB is found to be 4 years or older.
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Affected Aircraft
Bombardier, Inc., Model BD-700-1A10 airplanes.
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
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