# AD 64-10-05: Exhaust Valve

- Type: Airworthiness directive
- Status: Current
- Products: Pratt & Whitney Division Military R-2800 Series
- Superseded by: Nothing supersedes this AD
- Product type: Engine
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/B633780CD9125DE2862569D000581BCC.0001
- DRS record last changed: May 30, 2024
- Page: https://openairdocs.org/ad/64-10-05

## The airworthiness directive

64-10-05 PRATT & WHITNEY: Amdt. 724 Part 507 Federal Register May 5, 1964. Applies to All Models R-2800-21, -27, -31, -43, -51, -51M4, -59, -63, -71, -75, -75M2 and -79 Series Engines.

Compliance required within 1,400 hours' time in service after the effective date of this AD.

Because of instances of exhaust valve failures, replace the P/N 44764 exhaust valves with P/N's 50724 or 158175 exhaust valves.

This directive effective June 5, 1964.

Revised September 5, 1964.

## Affected data sheets (1) (OpenAirDocs)

The type certificate data sheets whose models the AD names.

- [TCDS TC 5E-8](https://openairdocs.org/tcds/TC%205E-8): Pratt & Whitney Division; names 1 of 1 models: Military R-2800 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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