# AD 70-21-01: Cabin Door Structure

- Type: Airworthiness directive
- Status: Current
- Products: Dornier Luftfahrt Do 28 D-1
- Effective: November 5, 1970
- Superseded by: Nothing supersedes this AD
- Product type: Aircraft, Small/large airplane
- Amendment: 39-1091
- Registered aircraft: 1 may be affected, by airframe or engine model (OpenAirDocs)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/BDB6E933B368BDBE86256A38004C7A97.0001
- DRS record last changed: May 30, 2024
- Page: https://openairdocs.org/ad/70-21-01

## The airworthiness directive

70-21-01 DORNIER, AG: Amdt. 39-1091. Applies to Model DO-28D-1 airplanes.

To prevent separation of the skin from the cabin door structure, within the next 100 hours' time in service after the effective date of this AD, unless already accomplished, secure the door skin by installing additional screws in accordance with Dornier Service Bulletin No. 015- 1206, dated October 1, 1969, or later LBA-approved issue or an FAA-approved equivalent.

This amendment becomes effective November 5, 1970.

## Affected data sheets (1) (OpenAirDocs)

The type certificate data sheets whose models the AD names.

- [TCDS A16EU](https://openairdocs.org/tcds/A16EU): General Atomics AeroTec Systems GmbH; names 1 of 8 models: Do 28 D-1

## 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: 1 (1 by airframe model, 0 by engine model)
- Makers: Dornier 1

Models with the most aircraft:

- [Dornier DO 28 D-1](https://openairdocs.org/model/dornier-do-28-d-1): 1 aircraft (airframe model)

All 1 models: https://openairdocs.org/ad/70-21-01/models.md
Every aircraft: https://openairdocs.org/ad/70-21-01/aircraft.md

Its text cites no advisory circulars or STCs.

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