- Effective
- July 22, 1972
- Models
- (c) R.209/4-40-4.5, (c) R.245/4-40-4.5, (c) R.259/4-40-4.5, (c) R130/4-20-4/, (c) R148/4-20-4/, (c) R175/4-30-4/ and 6 more
- Product
- Propeller
- Amendment
- 39-1473
Unofficial copy of the text in the FAA’s Dynamic Regulatory System. The FAA’s own copy is the authoritative one. DRS record last changed May 30, 2024.
Copies of the files this page was built from, with their SHA-256. Retrieved October 18, 2026.
| File | Size | SHA-256 | Original |
|---|---|---|---|
| FAA DRS HTML | 21 KB | d34d65cc…5677739 | FAA DRS (API key needed) |
On this page
The airworthiness directive
72-14-01 DOWTY ROTOL, LTD: Amdt. 39-1473. Applies to Dowty Rotol Propeller Types (c)R130/4-20-4/12E, (c)R186/4-30-4/16, (c)R187/4-30-4/18, (c)R193/4-30-4/50, (c)R184/4-30-4/50, (c)R259/4-40-4.5/17, (c)R148/4-20-4/21E, (c)R175/4-30-4/13E, (c)R179/4- 20-4/33, (c)R257/4-30-4/60, (c)R245/4-40-4.5/13, and (c)R209/4-40-4.5/2. These propellers are installed on, but not necessarily limited to, BAC Viscount Models 744, 745D, and 810; Armstrong Whitworth Model Argosy AW.650 Series 101; Fairchild and Fokker Models F27 and F227; Handley Page Model Herald; and Grumman Model Gulfstream G-159 airplanes.
Compliance is required as indicated unless already accomplished.
To prevent failure of a propeller blade due to the disengagement of the blade bearing retaining bolts resulting from excessive wear on the teeth of the locking segments, accomplish the following:
Within the next 5,000 hours' time in service or at the next propeller overhaul, after the effective date of this AD, whichever occurs sooner, incorporate Dowty Rotol Modification No. (c) VP.2676 (Rev. 1) in accordance with Dowty Rotol Limited Service Bulletin No. 61-714, Revision 3, dated July 26, 1971, or an FAA-approved equivalent.
This amendment becomes effective 22 July, 1972.
Affected TCDS · 3
The type certificate data sheets for the models this AD names, matched by model and maker.