AD 2006-09-13
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| engine | Honeywell | International Inc | Airworthiness Directives; Honeywell International Inc. ALF502L Series and ALF502R Series Turbofan Engines |
Unsafe Condition
Failure of a third stage turbine disc and shaft assembly, leading to turbine blade release and separation of the exhaust nozzle.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Determine the configuration of the third stage turbine disc and shaft assembly. Replace parts according to the specified drawdown schedule based on hours-in-service (HIS).
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Within 50 additional hours-in-service (HIS) or before reaching specified HIS limits, depending on the configuration and current HIS.
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Affected Aircraft
Honeywell International Inc. ALF502L series (ALF502L, ALF502L-2, ALF502L-2A, ALF502L-2C, ALF502L-3) and ALF502R series turbofan engines with third stage turbine disc and shaft assemblies in the Pre SB No. ALF502L 72-232 configuration. Engines installed on BAe Systems AVRO 146 and Bombardier (Canadair) CL600-1A11 series 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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