# AD 66-20-02: Engine Fire Extinguishing System

- Type: Airworthiness directive
- Status: Current
- Products: de Havilland Aircraft Co., Ltd., The D.H. 104 Dove Series 1A, D.H. 104 Dove Series 2A, D.H. 104 Dove Series 5A, D.H. 104 Dove Series 5BA, D.H. 104 Dove Series 6A, D.H. 104 Dove Series 6BA, D.H. 104 Dove Series 7A, D.H. 104 Dove Series 7AXC, D.H. 104 Dove Series 8A and D.H. 104 Dove Series 8AXC
- Effective: August 13, 1966
- Published: August 13, 1966
- Superseded by: Nothing supersedes this AD
- Product type: Aircraft, Small airplane
- Amendment: 39-273
- Registered aircraft: 3 may be affected, by airframe or engine model (OpenAirDocs)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/C11B53FAD7F05C7586256A34006D9070.0001
- DRS record last changed: May 30, 2024
- Page: https://openairdocs.org/ad/66-20-02

## The airworthiness directive

66-20-02 HAWKER SIDDELEY: Amdt. 39-273, Part 39, Federal Register August 13, 1966. Applies to de Havilland Model 104 Dove Series Airplanes Equipped With an Engine Fire Extinguisher System.

Compliance required within the next 100 hours' time in service after the effective date of this AD, unless already accomplished.

  (a) Inspect the engine air intake fire extinguishing system nozzle assembly to determine that 0.25 inch diameter radial holes are present in nozzle jet, P/N P.117. Replace each nozzle jet without 0.25 inch diameter radial holes with jet, P/N P.117e, with 0.25 inch diameter radial holes.

  (b) Inspect the engine fire extinguishing system to determine that proper fire extinguisher bottle and flexible hoses from the fire extinguisher bottle to the firewall and from the firewall to the distributor are installed in accordance with Hawker Siddeley Aviation Ltd. Technical News Sheet CT (104) No. 196, Issue 1, or later ARB-approved issue or an FAA- approved equivalent. Replace improper fire extinguisher bottles and flexible hoses.

Hawker Siddeley Aviation Limited Technical News Sheet Dove (104) Series CT (104) No. 195, Issue 1, pertains to this subject.)

This directive effective August 13, 1966.

## Affected data sheets (1) (OpenAirDocs)

The type certificate data sheets whose models the AD names.

- [TCDS A-807](https://openairdocs.org/tcds/A-807): Acro Aeronautical Services Ltd; names 10 of 10 models: D.H. 104 Dove Series 8A, D.H. 104 Dove Series 7A, D.H. 104 Dove Series 1A, D.H. 104 Dove Series 5A, D.H. 104 Dove Series 7AXC, D.H. 104 Dove Series 8AXC, D.H. 104 Dove Series 2A, D.H. 104 Dove Series 5BA…

## 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: 3 (3 by airframe model, 0 by engine model)
- Makers: Dehavilland 3

Models with the most aircraft:

- [Dehavilland DH104 DOVE 6A](https://openairdocs.org/model/dehavilland-dh104-dove-6a): 3 aircraft (airframe model)

All 1 models: https://openairdocs.org/ad/66-20-02/models.md
Every aircraft: https://openairdocs.org/ad/66-20-02/aircraft.md

Its text cites no advisory circulars or STCs.

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