56-26-04: Nacelle Side Brackets
FAA order 56-26-04 is an airworthiness directive. The FAA's subject line: Nacelle Side Brackets. System: airframe structure.
What it applies to as the FAA lists it
- Kind of product
- Aircraft
- Makes
- Vickers-Armstrongs (Aircraft Limited)
- Models
- Viscount 745D
Dates and paperwork
- Docket
- Unknown
- Status
- Current
- The FAA's document
- Read the order on the FAA's site
The order itself the regulatory text, as published
Show the full text (649 characters)
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.
Source: FAA Dynamic Regulatory System, airworthiness directives. The FAA's document is the authority; the register counts are this site's, from the FAA register of November 6, 2026. Connections as data: /graph/directive/56-26-04.json · aircraft systems.