AD 92-20-04
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Bombardier Inc. | CL-600-2A12 (CL-601) | Airworthiness Directives; CANADAIR, LTD. Models CL-600-2A12 (CL-601) and CL-600-2B16 (CL-601-3A) Series Airplanes |
| aircraft | Bombardier Inc. | CL-600-2B16 (CL-601-3A) | Airworthiness Directives; CANADAIR, LTD. Models CL-600-2A12 (CL-601) and CL-600-2B16 (CL-601-3A) Series Airplanes |
Unsafe Condition
The presence of fuel vapors in the aft equipment bay could result in an in-flight fire in the event of a lightning strike or other ignition source.
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Required Actions
Perform a visual inspection of the sensing line in the aft equipment bay within 5 days after August 28, 1991, or prior to refuelling, whichever is later. Repeat inspections before each refuelling. If damage is found, either drain the tail cone fuel tank before further flight or replace the sensing line. Inspect for leakage after each refuelling and address it by draining or replacing the sensing line. Within 6 months after November 17, 1992, modify the sensing line, perform functional tests, and conduct electrical bonding tests as per Canadair Alert Service Bulletin A601-0381, Revision 2. The modification terminates the repetitive inspections.
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Compliance Time
Within 5 days after August 28, 1991, or prior to refuelling of the tail cone fuel tank, whichever occurs later; thereafter, repeat inspections prior to each refuelling. The modification must be done within 6 months after November 17, 1992.
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Affected Aircraft
Bombardier Inc. Models CL-600-2A12 (CL-601) and CL-600-2B16 (CL-601-3A) series airplanes equipped with a tail cone fuel tank installed per Original Issue, Revision 1, or Revision 2 of Canadair Service Bulletin 601-0262.
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Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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