AD 75-17-32
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| engine | Rolls-Royce Corporation | 501-D13 | DETROIT DIESEL ALLISON Model 501-D13 Series Engines |
| engine | Rolls-Royce Corporation | 501-D13A | DETROIT DIESEL ALLISON Model 501-D13 Series Engines |
| engine | Rolls-Royce Corporation | 501-D13D | DETROIT DIESEL ALLISON Model 501-D13 Series Engines |
| engine | Rolls-Royce Corporation | 501-D13E | DETROIT DIESEL ALLISON Model 501-D13 Series Engines |
| engine | Rolls-Royce Corporation | 501-D13H | DETROIT DIESEL ALLISON Model 501-D13 Series Engines |
Unsafe Condition
Second stage turbine wheels with part number 6829072 may develop cracks due to fatigue, leading to engine failure.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Remove from service turbine wheels based on inspection history and cycle counts as specified in the schedules outlined in sections I, II, III. Inspections must be performed using the fluorescent penetrant method FP-30A/ZL-30A.
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Compliance Time
Compliance required as indicated in the schedules (e.g., within 100 cycles from the effective date or prior to exceeding specified cycle limits).
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Affected Aircraft
Rolls-Royce Corporation Model 501-D13 series engines with second stage turbine wheels part number 6829072 and serial numbers listed in the AD (e.g., KK14208 to KK15500), including wheels with R1-R5 suffixes.
AI-generated summary from the source AD text. Verify against the official source before acting.
Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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