- Models
- Viscount 744, Viscount 745D
- Data sheet
- TCDSA-814
- Product
- Aircraft · Large airplane
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 | 20 KB | c177dad4…67b8c4b | FAA DRS (API key needed) |
On this page
The airworthiness directive
58-07-03 VICKERS: Applies to All Viscount 700 Series Aircraft.
Compliance required before accumulation of 6,000 flight hours.
Investigations have proved it is necessary to replace the 1/2-inch diameter bolts securing the top inboard attachment fittings of the inner nacelles to the leading edge member at Station 96 at 6,000 hours.
The P/N's of the bolts, which are to be replaced at 6,000 hours are as follows: 70103-4405 (Mod. D.1031 embodies); 80203-2405 (Mod. D.1327 or D.2025 embodied).
Vickers Mod. D.2581 introduces redesigned nuts and bolts as direct replacement for the above bolts. This design ensures that any bending moments present will be taken by the full shank diameter of the bolts. The modified bolt assemblies are split pinned.
Vickers-Armstrong has issued PTL 179, Issue 2, and Modification D.2581 covering this same subject. The British Air Registration Board considers this mandatory. The FAA concurs with this action and considers compliance therewith mandatory.
Affected TCDS · 1
The type certificate data sheets for the models this AD names, matched by model and maker.