AD 2021-26-23
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Bombardier | Various | Airworthiness Directives; Bombardier, Inc., Airplanes |
Unsafe Condition
The potential for a fire hazard as a result of fuel leak from the APU EFP electrical conduit in the hot landing light compartment.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Inspect the APU, repair if necessary, and modification of the engine EFP installation, as specified in Bombardier Service Bulletin 604-28-024, Revision 01, dated May 28, 2021, or later revisions.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Within 50 flight hours after the effective date of this AD, or before further flight, whichever occurs first.
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Affected Aircraft
Bombardier, Inc., Model CL-600-2B16 (601-3A, 601-3R, and 604 Variants) airplanes, with serial numbers 5361 through 5565 inclusive, and 5601 through 5625 inclusive.
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Source: Official FAA Source ↗
Retrieved: Apr 4, 2026
Rights: U.S. Government Public Domain
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