# AD 65-12-03: Speed Range Vibration Stresses

- Type: Airworthiness directive
- Status: Current
- Products: Mooney M20E
- Effective: May 28, 1965
- Superseded by: Nothing supersedes this AD
- Product type: Aircraft, Small airplane
- Amendment: 39-74
- Registered aircraft: 838 may be affected, by airframe or engine model (OpenAirDocs)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/A1A00E9C435500F086256A3B006F164E.0001
- DRS record last changed: May 30, 2024
- Page: https://openairdocs.org/ad/65-12-03

## The airworthiness directive

65-12-03 MOONEY: Amdt. 39-74 Part 39 Federal Register May 28, 1965. Applies to Model M20E Aircraft, Serial Numbers 101 through 722 Equipped with Hartzell Propeller, HC-C2YK/7666-2 or CHC-C2YK/7666-2.

Compliance required within the next 25 hours' time in service after the effective date of this AD unless already accomplished.

To avoid continuous propeller operation in the speed range where vibration stresses are high, accomplish the following:

  (a) Add the following operating limitation to the Airplane Flight Manual:

"Avoid continuous operation between 2,100 and 2,350 r.p.m."

  (b) Mark engine tachometer with a red arc from 2,100 to 2,350 r.p.m., install Mooney decal P/N 150010-65, on tachometer bezel glass in accordance with Mooney Service Letter No. 21-127, dated April 15, 1965.

This directive effective May 28, 1965.

## Affected data sheets (1) (OpenAirDocs)

The type certificate data sheets whose models the AD names.

- [TCDS 2A3](https://openairdocs.org/tcds/2A3): Mooney International Corporation; names 1 of 17 models: M20E

## 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: 838 (838 by airframe model, 0 by engine model)
- Makers: Mooney 829, Aerostar Acft Corp Of Texas 9

Models with the most aircraft:

- [Mooney M20E](https://openairdocs.org/model/mooney-m20e): 829 aircraft (airframe model)
- [Aerostar Acft Corp Of Texas M20E](https://openairdocs.org/model/aerostar-acft-corp-of-texas-m20e): 9 aircraft (airframe model)

All 2 models: https://openairdocs.org/ad/65-12-03/models.md
Every aircraft: https://openairdocs.org/ad/65-12-03/aircraft.md

Its text cites no advisory circulars or STCs.

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