AD 82-08-01
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Dowty Propellers | (c) R.209/4-40-4.5 | DOWTY ROTOL Models (c)R.209/4-40.5/2, (c)R.245/4-40.5/13, and (c)R.259/4-40-4.5/17 Propellers |
| aircraft | Dowty Propellers | (c) R.245/4-40-4.5 | DOWTY ROTOL Models (c)R.209/4-40.5/2, (c)R.245/4-40.5/13, and (c)R.259/4-40-4.5/17 Propellers |
| aircraft | Dowty Propellers | (c) R.259/4-40-4.5 | DOWTY ROTOL Models (c)R.209/4-40.5/2, (c)R.245/4-40.5/13, and (c)R.259/4-40-4.5/17 Propellers |
Unsafe Condition
Loosening of the propeller blade groups due to separation of red line position markings by more than 0.100 inch or damaged lockpieces, set bolts, or shims affecting the locking mechanism of the blade groups in the hub group.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Inspect the locking of the blade groups in the hub group every 300 hours' time in service, starting within 50 hours after the AD's effective date. Replace the propeller or defective parts with serviceable ones before further flight if red line markings separate by over 0.100 inch or lockpieces, set bolts, or shims are damaged or not secure.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
within the next 50 hours' time in service after the effective date, and thereafter at intervals not to exceed 300 hours' time in service from the last inspection
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
Dowty Rotol Propellers models (c)R.209/4-40.5/2, (c)R.245/4-40.5/13, and (c)R.259/4-40-4.5/17 installed on Nihon YS-11, Convair Models 600(240D), 640(340D), and 640(440D) airplanes not modified by Dowty Rotol Modification (c)VP2693 per SB No. 61-728, Rev 3.
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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