# AD 66-14-04: Cam Reduction Drive Gear Assembly

- Type: Airworthiness directive
- Status: Current
- Products: Pratt & Whitney Division Military R-985 Series, Wasp Jr. A, Wasp Jr. B-4, Wasp Jr. B-5, Wasp Jr. SB, Wasp Jr. SB-2, Wasp Jr. SB-3, Wasp Jr. T1B, Wasp Jr. T1B2, Wasp Jr. T1B3, Wasp Jr. T3A, Wasp Jr. TB and 1 more
- Effective: July 9, 1966
- Superseded by: Nothing supersedes this AD
- Product type: Engine
- Amendment: 39-247
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/96D2BC8DD56CF6E08625682C00554C2C.0001
- DRS record last changed: May 30, 2024
- Page: https://openairdocs.org/ad/66-14-04

## The airworthiness directive

66-14-04 PRATT & WHITNEY: Amdt. 39-247 Part 39 Federal Register June 8, 1966. Applies to Pratt & Whitney Aircraft Wasp Jr. and R-985 Series Engines. Compliance required at the next engine overhaul after the effective date of this AD unless already accomplished. To prevent failure of the cam reduction drive gear assembly and resultant loss of engine power, replace cam reduction drive gear assembly, P/N 3965, with cam reduction drive gear, P/N 331098. (Pratt & Whitney Aircraft Service Bulletin No. 1671, Supplement No. 1, Revision A, revised November 24, 1959, pertains to this subject.) This supersedes AD 62-11-05. This directive effective July 9, 1966.

## Affected data sheets (5) (OpenAirDocs)

The type certificate data sheets whose models the AD names.

- [TCDS E-123](https://openairdocs.org/tcds/E-123): Pratt & Whitney Division; names 7 of 7 models: Wasp Jr. T1B3, Wasp Jr. B-4, Wasp Jr. SB-3, Wasp Jr. T1B2, Wasp Jr. SB, Wasp Jr. SB-2, Wasp Jr. B-5
- [TCDS TC 85](https://openairdocs.org/tcds/TC%2085): Pratt & Whitney Division; names 3 of 3 models: Wasp Jr. TB, Wasp Jr. TB-2, Wasp Jr. T3A
- [TCDS ATC 39](https://openairdocs.org/tcds/ATC%2039): Pratt & Whitney Division; names 1 of 1 models: Wasp Jr. A
- [TCDS TC 113](https://openairdocs.org/tcds/TC%20113): Pratt & Whitney Division; names 1 of 1 models: Wasp Jr. T1B
- [TCDS TC 5E-1](https://openairdocs.org/tcds/TC%205E-1): Pratt & Whitney Division; names 1 of 1 models: Military R-985 Series

## Registered aircraft it may apply to (OpenAirDocs)

No registered aircraft matched the models it names.

Its text cites no advisory circulars or STCs.

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