# AD 66-02-03: Main and Nose Landing Gear Assemblies

- 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: February 5, 1966
- Published: January 6, 1966
- Superseded by: Nothing supersedes this AD
- Product type: Aircraft, Small airplane
- Amendment: 39-177
- Registered aircraft: 3 may be affected, by airframe or engine model (OpenAirDocs)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/D257E7BAE377792086256A34006D797C.0001
- DRS record last changed: May 30, 2024
- Page: https://openairdocs.org/ad/66-02-03

## The airworthiness directive

66-02-03 de HAVILLAND: Amdt. 39-177, Part 39, Federal Register January 6, 1966. Applies to All Model 104 Dove Airplanes with Serial Numbers through 04504.

Compliance required as indicated.

To prevent further cracking of pistons P/N AHO.19742, installed in Dunlop pneumatic retraction jacks (cylinders) P/N AH.8463 and P/N AC.11130, fitted to the main and nose landing gear assemblies accomplish the following:

  (a) Unless already accomplished, replace piston P/N AHO.19742 in the pneumatic retraction jacks P/N AH.8463 and P/N AC.11130 on all airplanes that have accumulated 10,000 hours' time in service and thereafter at intervals not to exceed 10,000 hours' time in service.

  (b) Replacement of the pistons required in (a) may be discontinued after installation of de Havilland Modification No. 1144 which provides jacks with pistons that have an increased service life.

(de Havilland Service Technical News Sheet TMS Series C.T. (104 Issue 2 dated July 11, 1960, covers this subject.)

This supersedes AD 57-20-02. This directive effective February 5, 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/66-02-03/models.md
Every aircraft: https://openairdocs.org/ad/66-02-03/aircraft.md

Its text cites no advisory circulars or STCs.

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.