# AD 71-16-07: Carburetor Heating System

- Type: Airworthiness directive
- Status: Current
- Products: SOCATA MS 894A
- Effective: August 4, 1971
- Superseded by: Nothing supersedes this AD
- Product type: Aircraft, Small airplane
- Amendment: 39-1257
- Registered aircraft: 27 may be affected, by airframe or engine model (OpenAirDocs)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/CBBA19D2A338044886256A56005C2C4E.0001
- DRS record last changed: May 30, 2024
- Page: https://openairdocs.org/ad/71-16-07

## The airworthiness directive

71-16-07 MORANE SAULNIER: Amendment 39-1257. Applies to Morane Saulnier Model MS.894A airplanes.

Compliance is required within the next 50 hours' time in service after the effective date of this AD unless already accomplished.

To prevent failure of the carburetor heating system, replace the Nylstop nut that secures the carburetor heating shutter on its axle with an ELBE H.100 or Simmonds 4 PHT 280 steel nut in accordance with SOCATA-Service Bulletin No. 82-1 (GR. 75-04), dated November 1970, or an FAA-approved equivalent.

This amendment becomes effective August 4, 1971.

## Affected data sheets (1) (OpenAirDocs)

The type certificate data sheets whose models the AD names.

- [TCDS 7A14](https://openairdocs.org/tcds/7A14): Daher; names 1 of 13 models: MS 894A

## 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: 27 (27 by airframe model, 0 by engine model)
- Makers: S.O.C.A.T.A. 27

Models with the most aircraft:

- [S.O.C.A.T.A. MS894A](https://openairdocs.org/model/s-o-c-a-t-a-ms894a): 27 aircraft (airframe model)

All 1 models: https://openairdocs.org/ad/71-16-07/models.md
Every aircraft: https://openairdocs.org/ad/71-16-07/aircraft.md

Its text cites no advisory circulars or STCs.

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