AD 71-08-06
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| engine | Honeywell International Inc. | T5313A | AVCO LYCOMING T5313A and T5313B Engines |
| engine | Honeywell International Inc. | T5313B | AVCO LYCOMING T5313A and T5313B Engines |
Unsafe Condition
Failure of the overspeed pickup gear bearings could lead to secondary failure of the power turbine (N2) accessory drive system.
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Required Actions
Inspect the Overspeed Pickup Housing Assembly (P/N 1-180-230-01 or -03) within 25 hours' time in service after the effective date and every 25 hours thereafter. Replace the assembly with P/N 1-180-230-04 within 200 hours' time in service after the effective date.
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Compliance Time
within the next 25 hours' time in service after the effective date of this AD and every 25 hours' time in service thereafter until item (b) is accomplished. Replace... within the next 200 hours time in service after the effective date of this AD
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Affected Aircraft
Avco Lycoming T5313A and T5313B turboshaft engines with part number 1-180-230-01 or -03 Overspeed Pickup Housing Assembly.
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Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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