# AD 64-14-03: Electrical Installation

- Type: Airworthiness directive
- Status: Current
- Products: Dornier-Werke Do 28 A-1, Do 28 B-1, Do 28 D and Do 28 D-1
- Effective: July 13, 1964
- Published: June 13, 1964
- Superseded by: Nothing supersedes this AD
- Product type: Aircraft, Small airplane, Small/large airplane
- Registered aircraft: 7 may be affected, by airframe or engine model (OpenAirDocs)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/5EEE5AE69E6B74B886256A38004C52A9.0001
- DRS record last changed: May 30, 2024
- Page: https://openairdocs.org/ad/64-14-03

## The airworthiness directive

64-14-03 DORNIER: Amdt. 746 Part 507 Federal Register June 13, 1964. Applies to All Model DO-28 Aircraft Up to and Including Serial Number 3060.

Compliance required as indicated.

It has been found that the generator and battery relays remain inoperative with low battery voltage so that the electrical system remains without power supply. To correct this condition, accomplish the following:

Within the next 50 hours' time in service, change the electrical wiring as specified by Dornier Technical Bulletin 28-6 dated December 7, 1962.

(Dornier Technical Bulletin No. 28-6 dated December 7, 1962 covers this same subject.)

This directive effective July 13, 1964.

## Affected data sheets (2) (OpenAirDocs)

The type certificate data sheets whose models the AD names.

- [TCDS 7A13](https://openairdocs.org/tcds/7A13): General Atomics AeroTec Systems GmbH; names 2 of 2 models: Do 28 B-1, Do 28 A-1
- [TCDS A16EU](https://openairdocs.org/tcds/A16EU): General Atomics AeroTec Systems GmbH; names 2 of 8 models: Do 28 D, 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: 7 (7 by airframe model, 0 by engine model)
- Makers: Dornier 7

Models with the most aircraft:

- [Dornier DO28 A-1](https://openairdocs.org/model/dornier-do28-a-1): 3 aircraft (airframe model)
- [Dornier DO28 B-1](https://openairdocs.org/model/dornier-do28-b-1): 3 aircraft (airframe model)
- [Dornier DO 28 D-1](https://openairdocs.org/model/dornier-do-28-d-1): 1 aircraft (airframe model)

All 3 models: https://openairdocs.org/ad/64-14-03/models.md
Every aircraft: https://openairdocs.org/ad/64-14-03/aircraft.md

Its text cites no advisory circulars or STCs.

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