AD 2017-20-06
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| engine | Honeywell | International Inc | Airworthiness Directives; Honeywell International Inc. Turbofan Engines |
Unsafe Condition
Failure of the second stage low-pressure turbine (LPT2) blade due to high-cycle fatigue in the blade's dovetail region, leading to loss of power.
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Required Actions
Inspect the LPT2 blades using a borescope. If the blades fail the inspection, replace them with a part eligible for installation.
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Compliance Time
Before further flight
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Affected Aircraft
Honeywell International Inc. AS907-1-1A turbofan engines with second stage low-pressure turbine (LPT2) rotor blades, part number 3035602-1.
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Source: Official FAA Source ↗
Retrieved: Apr 6, 2026
Rights: U.S. Government Public Domain
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