AD 2011-24-11
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| engine | Honeywell | International Inc | Airworthiness Directives; Honeywell International Inc. Turbofan Engines |
Unsafe Condition
Cracks found in second stage high pressure compressor (HPC2) discs, part number 2-101-332-12, during routine inspection. These cracks could lead to disc fracturing before reaching the published life limit, resulting in an uncontained failure and damage to the airplane.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Remove from service HPC2 discs, part number 2-101-332-12, with serial numbers listed in Table 2 of Honeywell International Inc. Service Bulletin ALF/LF-72-1113, dated September 16, 2011.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Before accumulating 4,500 cycles-since-new on the affected HPC2 disc, or before exceeding 7 years after the effective date of this AD, whichever occurs first.
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Affected Aircraft
Honeywell International Inc. ALF502L-2C, ALF502R-3, ALF502R-3A, ALF502R-5, LF507-1F, and LF507-IH turbofan engines with HPC2 discs, part number 2-101-332-12, and serial numbers listed in Table 2 of Honeywell International Inc. Service Bulletin ALF/LF-72-1113.
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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