# AD 76-24-04: Oil Return Pipes

- Type: Airworthiness directive
- Status: Current
- Products: SOCATA MS 892A-150, MS 892E-150, MS 893A and MS 893E
- Effective: December 14, 1976
- Superseded by: Nothing supersedes this AD
- Product type: Aircraft, Small airplane
- Amendment: 39-2780
- Registered aircraft: 5 may be affected, by airframe or engine model (OpenAirDocs)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/A2DE5CBA24F44FF486256A56005C80BD.0001
- DRS record last changed: May 30, 2024
- Page: https://openairdocs.org/ad/76-24-04

## The airworthiness directive

76-24-04 MORANE SAULNIER (SOCATA): Amendment 39-2780. Applies to Models MS 892A-150, MS 892E-150, and MS 893A airplanes, all serial numbers, and Model MS 893E airplanes, serial numbers 12674 and below, certificated in all categories.

Compliance is required as indicated, unless already accomplished.

To detect rocker oil return pipe wear and prevent possible engine failure, accomplish the following:

  (a) Within the next 10 hours time in service after the effective date of this AD, inspect the rocker oil return pipes for wear in accordance with Socata Service Bulletin No. 124, GR 79-09, dated January 1976, or an FAA-approved equivalent.

  (b) If, during the inspection required by paragraph (a) of this AD, rocker oil return pipe wear is found to exceed 10% of pipe wall thickness, before further flight, replace the part with a new part of the same part number.

  (c) Within the next 25 hours time in service after the effective date of this AD, rework the cylinder cooling deflector spring in accordance with Socata Service Bulletin No. 124, GR 79-09, dated January 1976, or an FAA-approved equivalent.

This amendment becomes effective on December 14, 1976.

## Affected data sheets (1) (OpenAirDocs)

The type certificate data sheets whose models the AD names.

- [TCDS 7A14](https://openairdocs.org/tcds/7A14): Daher; names 4 of 13 models: MS 892A-150, MS 892E-150, MS 893E, MS 893A

## 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: Morane Saulnier 3, S.O.C.A.T.A. 2

Models with the most aircraft:

- [Morane Saulnier MS893A](https://openairdocs.org/model/morane-saulnier-ms893a): 2 aircraft (airframe model)
- [S.O.C.A.T.A. MS893E](https://openairdocs.org/model/s-o-c-a-t-a-ms893e): 2 aircraft (airframe model)
- [Morane Saulnier MS893E](https://openairdocs.org/model/morane-saulnier-ms893e): 1 aircraft (airframe model)

All 3 models: https://openairdocs.org/ad/76-24-04/models.md
Every aircraft: https://openairdocs.org/ad/76-24-04/aircraft.md

Its text cites no advisory circulars or STCs.

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.