# AD 72-10-03: Fatigue Failure Wing Spar Fitting

- Type: Airworthiness directive
- Status: Current
- Products: de Havilland Aircraft Co., Ltd., The 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 with STC SA1747WE
- Effective: June 7, 1972
- Superseded by: Nothing supersedes this AD
- Product type: Aircraft, Small airplane
- Amendment: 39-1443
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/5BDD4C15E6BB473B86256A3400702C51.0001
- DRS record last changed: May 30, 2024
- Page: https://openairdocs.org/ad/72-10-03

## The airworthiness directive

72-10-03 HAWKER SIDDELEY: Amendment 39-1443. Applies to DeHavilland Model D.H. 104 Series 7A, 7AXC, 8A, 8AXC airplanes modified per STC SA1747WE certificated in all categories. (Also known as "Carstedt Jet Liner C-600").

Compliance required prior to further flight after the effective date of this AD as indicated, unless already accomplished.

To prevent fatigue failure of a wing main spar lower attach fitting or of a wing center section lower spar boom, accomplish the following:

  (a) Replace each wing lower spar attach fitting P/N CPD 2004 installed under STC SA1747WE at or before 1800 hours' time in service, and at intervals thereafter not to exceed 1800 hours' time in service, with a new attach fitting (Strato Engineering Co., Inc. Part No. CPD 2004).

  (b) Replace the wing center section lower spar boom at or before 1800 hours' time in service, and at intervals thereafter not to exceed 1800 hours' time in service, in accordance with DeHavilland Aircraft Company drawing number 4-Z-13775, or another replacement modification approved by the Chief, Aircraft Engineering Division, FAA Western Region.

  (c) If aircraft are further modified in accordance with STC SA2438WE, or an alternate acceptable modification approved by the Chief, Aircraft Engineering Division, Western Region, replacement of the parts as specified in (a) and (b) above, may be discontinued.

This amendment becomes effective June 7, 1972.

## 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 4 of 10 models: D.H. 104 Dove Series 8A, D.H. 104 Dove Series 7A, D.H. 104 Dove Series 7AXC, D.H. 104 Dove Series 8AXC

## Registered aircraft it may apply to (OpenAirDocs)

No registered aircraft matched the models it names.

## Related documents

- [STC SA1747WE](https://openairdocs.org/stc/SA1747WE): Installation of AiResearch TPE 331 engines, increase in fuselage length and related changes.. Texas Airplane Mfg Co, Inc, Named in the applicability
- [STC SA2438WE](https://openairdocs.org/stc/SA2438WE): Installation of spar reinforcing steel straps, on aircraft previously modified per STC SA1747WE.. Consulting Aerospace Engineers Inc, Cited in the text

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