# AD 80-02-05: Flexible Fuel Hose Assembly

- Type: Airworthiness directive
- Status: Current
- Products: Rolls-Royce Limited, Bristol Engines Division Viper Mk. 601-22
- Effective: January 24, 1980
- Superseded by: Nothing supersedes this AD
- Product type: Engine
- Amendment: 39-3655
- Registered aircraft: 4 may be affected, by airframe or engine model (OpenAirDocs)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/6E75B460B827B0978625685F0074CED5.0001
- DRS record last changed: May 30, 2024
- Page: https://openairdocs.org/ad/80-02-05

## The airworthiness directive

80-02-05 ROLLS ROYCE LIMITED: Amendment 39-3655. Applies to Viper MK 601-22 model engine as installed in, but not limited to, Hawker Siddeley HS 125 series 600A and Beechcraft Hawker Siddeley BH 125 series 600A aircraft. Compliance is required as indicated unless already accomplished. To prevent possible failure of the flexible fuel hose, accomplish the following: (a) Within 250 hours engine time in service after the effective date of this AD, remove the flexible fuel hose assembly, Rolls Royce P/N DX 33-180-300 and install a new flexible fuel hose assembly, Rolls Royce P/N V 103813, in accordance with paragraph 2.A., "Accomplishment Instructions," of Rolls Royce Service Bulletin No. 73-A17, dated June 1978, or an equivalent approved by the Chief, Aircraft Certification Staff, AEU-100, Europe, Africa and Middle East Region, Brussels, Belgium. (b) Upon request of an operator, an FAA Maintenance Inspector may adjust the compliance time specified in paragraph (a) of this ADto be compatible with that operator's maintenance schedule. This amendment becomes effective January 24, 1980.

## Affected data sheets (1) (OpenAirDocs)

The type certificate data sheets whose models the AD names.

- [TCDS E15EU](https://openairdocs.org/tcds/E15EU) (historical): Rolls-Royce Deutschland Ltd & Co KG; names 1 of 1 models: Viper Mk. 601-22

## Registered aircraft it may apply to (OpenAirDocs)

Matched by airframe and engine model; the AD's applicability may narrow it by serial number, part number or equipment.

- Aircraft: 4 (0 by airframe model, 4 by engine model)
- Makers: Aero Vodochody 1, Aerovodochody 1, Bac Jet Provost 1, Soko 1

Models with the most aircraft:

- [Rolls-Royce VIPER MK60122](https://openairdocs.org/engine/rolls-royce-viper-mk60122): 3 aircraft (engine model)
- [Rolls-Royce VIPER MK 601 series](https://openairdocs.org/engine/rolls-royce-viper-mk-601-series): 1 aircraft (engine model)

All 2 models: https://openairdocs.org/ad/80-02-05/models.md
Every aircraft: https://openairdocs.org/ad/80-02-05/aircraft.md

Its text cites no advisory circulars or STCs.

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