# AD 70-17-06: Firewall Sealant

- Type: Airworthiness directive
- Status: Current
- Products: SOCATA MS 880B, MS 885 and MS 894A
- Effective: September 12, 1970
- Superseded by: Nothing supersedes this AD
- Product type: Aircraft, Small airplane
- Amendment: 39-1068
- Registered aircraft: 31 may be affected, by airframe or engine model (OpenAirDocs)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/2412A289DB6BBFCD86256A56005C113C.0001
- DRS record last changed: May 30, 2024
- Page: https://openairdocs.org/ad/70-17-06

## The airworthiness directive

70-17-06 MORANE SAULNIER: Amdt. 39-1068. Applies to Models MS. 880B, MS. 885, and MS. 894A airplanes.

To prevent the possibility of flames or harmful gases passing into the cabin from the engine compartment, within the next 100 hours' time in service after the effective date of this AD, unless already accomplished, replace the existing firewall sealant with "STABOND HT-4", Specification LAC-40-475 fire-resistant sealant manufactured by American Latex Product Corporation, or other FAA-approved fire-resistant sealant.

This amendment becomes effective September 12, 1970.

## Affected data sheets (1) (OpenAirDocs)

The type certificate data sheets whose models the AD names.

- [TCDS 7A14](https://openairdocs.org/tcds/7A14): Daher; names 3 of 13 models: MS 894A, MS 880B, MS 885

## 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: 31 (31 by airframe model, 0 by engine model)
- Makers: S.O.C.A.T.A. 28, Morane-Saulnier 3

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)
- [Morane-Saulnier MS880B](https://openairdocs.org/model/morane-saulnier-ms880b): 3 aircraft (airframe model)
- [S.O.C.A.T.A. MS880B](https://openairdocs.org/model/s-o-c-a-t-a-ms880b): 1 aircraft (airframe model)

All 3 models: https://openairdocs.org/ad/70-17-06/models.md
Every aircraft: https://openairdocs.org/ad/70-17-06/aircraft.md

Its text cites no advisory circulars or STCs.

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