# AD 67-02-04: Accessory Gear Boxes

- Type: Airworthiness directive
- Status: Current
- Products: British Aerospace Argosy AW.650 Series 101, Accessory Gear boxes, G-159 and Viscount 810
- Effective: June 23, 1970
- Superseded by: Nothing supersedes this AD
- Product type: Appliance
- Amendment: 39-1014
- Registered aircraft: 5 may be affected, by airframe or engine model (OpenAirDocs)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/93307852D1B239D586256E0100545CC8.0001
- DRS record last changed: May 30, 2024
- Page: https://openairdocs.org/ad/67-02-04

## The airworthiness directive

67-02-04 DOWTY ROTOL: Amdt. 39-322 as amended by Amendment 39-1014. Applies to Accessory Gear Boxes (c) PTG. 14/6A and B installed on Hawker Siddeley Argosy Type AW650 Series 101 Airplanes, (c) PTG. 14/8 Installed on Grumman Model G-159 Series Airplanes, and (c) PTG. 14/1 and 14/2B Installed on Vickers Viscount Model 810 Airplanes.

Compliance required at next gear box overhaul after the effective date of this AD, unless already accomplished.

To prevent fatigue failure of the tunnel drive shaft and excessive wear on the tunnel shaft serrations of airplanes specified in Column 1 of the following table equipped with accessory gear boxes with type number specified in Column 2 and premodification GB2145 tunnel shaft assemblies with part number specified in Column 3, replace each tunnel shaft assembly with one of applicable assemblies with part number specified in Column 4 modified in accordance with modification number specified in Column 5.

(Col 1) (Col 2) (Col 3) (Col 4) (Col 5) Airplane Model Accessory Gear Box Number Pre Modification GB2145 Part Number

Replacement Part Number Modification Number Argosy (c)PTG.14/6A&B 6.0207.2023 6.0207.2029 GB2145 AW 650

6.0207.2049 GB2145 Series 101

6.0207.2054 GB2300

6.0207.2059 GB2300

6.0207.2069 GB2320

6.0207.2125 GB2371 Grumman (c)PTG.14/8 6.0207.2023 6.0207.2029 GB2145 G-159

6.0207.2049 GB2145

6.0207.2054 GB2300

6.0207.2059 GB2300

6.0207.2069 GB2320

6.0207.2125 GB2371 Vickers (c)PTG.14/2B 6.0207.2023 6.0207.2029 GB2145 Viscount 810

6.0207.2049 GB2145

6.0207.2059 GB2300

6.0207.2069 GB2320

6.0207.2125 GB2371

  (c)PTG.14/1 6.0207.2024 6.0207.2030 GB2145

6.0207.2050 GB2145

6.0207.2055 GB2300

6.0207.2060 GB2300

6.0207.2070 GB2320

6.0207.2126 GB2371

(Dowty Rotol Service Bulletins Nos. 83-297, Revision 2; 83-331,Revision 1; and 83-338 pertain to this subject.)

Amendment 39-322 effective January 19, 1967.

This Amendment (39-1014) becomes effective June 23, 1970.

## Affected data sheets (3) (OpenAirDocs)

The type certificate data sheets whose models the AD names.

- [TCDS 1A17](https://openairdocs.org/tcds/1A17): Gulfstream Aerospace Corporation; names 1 of 1 models: G-159
- [TCDS 7A9](https://openairdocs.org/tcds/7A9): British Aerospace (Commercial Aircraft) Ltd; names 1 of 1 models: Argosy AW.650 Series 101
- [TCDS A-814](https://openairdocs.org/tcds/A-814): Vickers-Armstrongs (Aircraft Limited); names 1 of 3 models: Viscount 810

## 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: 5 (5 by airframe model, 0 by engine model)
- Makers: Grumman 4, Grumman American Avn. 1

Models with the most aircraft:

- [Grumman G-159](https://openairdocs.org/model/grumman-g-159): 4 aircraft (airframe model)
- [Grumman American Avn. G-159](https://openairdocs.org/model/grumman-american-avn-g-159): 1 aircraft (airframe model)

All 2 models: https://openairdocs.org/ad/67-02-04/models.md
Every aircraft: https://openairdocs.org/ad/67-02-04/aircraft.md

Its text cites no advisory circulars or STCs.

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