# AD 68-12-01: Sealant at Firewall and Nose Wheel

- Type: Airworthiness directive
- Status: Current
- Products: Aermacchi S.205 - 22/R
- Effective: July 5, 1968
- Superseded by: Nothing supersedes this AD
- Product type: Aircraft, Small airplane
- Amendment: 39-607
- Registered aircraft: 22 may be affected, by airframe or engine model (OpenAirDocs)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/0F72ACE3B6B3EB8C86256A550066AD75.0001
- DRS record last changed: May 30, 2024
- Page: https://openairdocs.org/ad/68-12-01

## The airworthiness directive

68-12-01 SIAI-MARCHETTI: Amdt. 39-607. Applies to Model S.205/22R airplanes, Serial Numbers 213 through 4-125.

Compliance required as indicated.

To avoid the possibility of flames or harmful gases passing from the engine compartment into the cockpit or other parts of the airplane, within the next 200 hours' time in service after the effective date of this AD, unless already accomplished, incorporate sealing plates and apply fireproof sealant "Stabond HT-4" or an FAA-approved equivalent at the firewall and nose wheel well, in accordance with Siai-Marchetti Service Bulletin No. 205B19, dated January 13, 1968, or later RAI-approved issue, or FAA-approved equivalent.

This amendment becomes effective July 5, 1968.

## Affected data sheets (1) (OpenAirDocs)

The type certificate data sheets whose models the AD names.

- [TCDS A9EU](https://openairdocs.org/tcds/A9EU): Aermacchi S.p.A.; names 1 of 7 models: S.205 - 22/R

## 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: 22 (22 by airframe model, 0 by engine model)
- Makers: Siai-Marchetti 22

Models with the most aircraft:

- [Siai-Marchetti S.205/22R](https://openairdocs.org/model/siai-marchetti-s-205-22r): 22 aircraft (airframe model)

All 1 models: https://openairdocs.org/ad/68-12-01/models.md
Every aircraft: https://openairdocs.org/ad/68-12-01/aircraft.md

Its text cites no advisory circulars or STCs.

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