AD 2009-08-07
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| engine | Honeywell | International Inc | Airworthiness Directives; Honeywell International Inc. ALF502L-2 and ALF502L-2C Turbofan Engines |
Unsafe Condition
Reports of discs found with excessive material removed from the balancing locations of the disc. This could lead to disc fracturing before reaching the currently published life limit, resulting in an uncontained failure of the disc and damage to the airplane.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Perform a dimensional inspection of the HPC first stage disc to determine if excessive disc balance material was removed. Replace the disc if excessive material was removed. If the removed balance material condition is acceptable, perform a magnetic particle inspection of the disc rim and slots for cracks. Replace the disc if any cracks are found.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
At the next shop visit, but not later than 2,500 cycles-in-service after the effective date of this AD.
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Affected Aircraft
Honeywell International Inc. ALF502L-2 and ALF502L-2C turbofan engines with high pressure compressor (HPC) first stage discs, part numbers 2-101-331-03, 2-101-331-04, and 2-101-331-10, installed. These engines are installed on, but not limited to, Bombardier CL-600-1A11 airplanes.
AI-generated summary from the source AD text. Verify against the official source before acting.
Source: Official FAA Source ↗
Retrieved: Apr 6, 2026
Rights: U.S. Government Public Domain
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