# AD 56-26-04: Nacelle Side Brackets

- Type: Airworthiness directive
- Status: Current
- Products: Vickers-Armstrongs Viscount 745D
- Superseded by: Nothing supersedes this AD
- Product type: Aircraft, Large airplane
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/E8168ADFBFEEDF228625699A005F1532.0001
- DRS record last changed: May 30, 2024
- Page: https://openairdocs.org/ad/56-26-04

## The airworthiness directive

56-26-04 VICKERS-ARMSTRONG: Applies to All Viscount Model 745D Aircraft.

Compliance required as indicated.

Service experience has indicated that cracks may develop in certain pre-Modification D.1031 engine nacelle attachment brackets. Accordingly, Vickers-Armstrong (Aircraft) Ltd. issued Preliminary Technical Leaflet No. 111, Issue 1, dated October 19, 1956, covering this subject. The British Air Registration Board considers the inspections recommended therein mandatory, in which the FAA concurs. When brackets to Mod. D.1031 are installed, the special inspections detailed in PTL No. 111 do not apply.

This supersedes AD 55-22-05.

## Affected data sheets (1) (OpenAirDocs)

The type certificate data sheets whose models the AD names.

- [TCDS A-814](https://openairdocs.org/tcds/A-814): Vickers-Armstrongs (Aircraft Limited); names 1 of 3 models: Viscount 745D

## Registered aircraft it may apply to (OpenAirDocs)

No registered aircraft matched the models it names.

Its text cites no advisory circulars or STCs.

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