AD 81-13-05
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Dowty Propellers | CR 289/3-110-F/1 | DOWTY ROTOL Models (c)R.289/3-110-F/1 and (c)R.289/3-110-F/11 Propellers |
| aircraft | Dowty Propellers | CR 289/3-110-F/11 | DOWTY ROTOL Models (c)R.289/3-110-F/1 and (c)R.289/3-110-F/11 Propellers |
Unsafe Condition
Cracks, scratches, pitting, nicks, dents, or gouges on the outer 15 inches of the leading edge of propeller blades, P/N 660705335, could lead to blade tip failures.
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Required Actions
Visually inspect using a 2x to 5x power magnifying glass or equivalent for cracks, scratches, pitting, nicks, dents, or gouges on the outer 15 inches of the leading edge of propeller blades, P/N 660705335. Remove surface damage and replace blades with cracks before further flight. Additionally, perform dye penetrant inspection every 15 operating hours and reinspect at least every 15 hours thereafter.
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Compliance Time
Prior to each engine start or prior to accumulating 3 hours of engine/propeller operating time, whichever occurs first, and prior to accumulating 15 hours of engine/propeller operating time with subsequent inspections every 15 operating hours thereafter.
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Affected Aircraft
Dowty Propellers models (c)R.289/3-110-F/1 and (c)R.289/3-110-F/11 propellers used on WSK-Pezetel Model PZL-3S engine installed on Gulfstream American G-164A, B, C modified by STC SA2731SW, and Ayres S2R-R3S, S2R modified by STC SA3897WE.
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Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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