# AD 66-13-02: Dome Light Switch

- Type: Airworthiness directive
- Status: Current
- Products: Boeing 707-100 Long Body, 707-100B Long Body, 707-100B Short Body, 707-200, 707-300 Series, 707-300B Series, 707-300C Series, 707-400 Series, 720 Series and 720B Series
- Effective: May 13, 1966
- Superseded by: Nothing supersedes this AD
- Product type: Aircraft, Large airplane
- Amendment: 39-236
- Registered aircraft: 6 may be affected, by airframe or engine model (OpenAirDocs)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/790320EECBFF2E828625682E005A4453.0001
- DRS record last changed: May 30, 2024
- Page: https://openairdocs.org/ad/66-13-02

## The airworthiness directive

66-13-02 BOEING: Amdt. 39-236 Part 39 Federal Register May 13, 1966. Applies to Models 707 and 720 Series Airplanes Listed in Boeing Service Bulletin 1789, Revision 1.

Compliance required as indicated, unless already accomplished.

  (a) Within the next 125 hours' time in service after the effective date of this AD, incorporate the following operating limitation in either the Airplane Flight Manual or on a placard installed adjacent to the cabin dome light switch:

"THE DOME LIGHT SWITCH MUST BE IN EITHER THE BLUE, LOW OR BRIGHT POSITION DURING TAKEOFF AND LANDING".

  (b) Within the next 1,200 hours' time in service after the effective date of this AD, install a new relay in the emergency exit light circuit or rewire the circuit to use existing contacts on the essential a.c. power failure relay, so that the emergency exit lights will function automatically when power is lost on the essential a.c. bus in accordance with Boeing Service Bulletin 1789, Revision 1, or later FAA-approved revision or an equivalent approved by the Chief, Aircraft Engineering Division, FAA Western Region.

  (c) The operating limitation imposed under (a) may be removed when the modification required in (b) has been accomplished.

This directive effective May 13, 1966.

## Affected data sheets (3) (OpenAirDocs)

The type certificate data sheets whose models the AD names.

- [TCDS 4A21](https://openairdocs.org/tcds/4A21): The Boeing Company; names 4 of 4 models: 707-100B Short Body, 707-200, 707-100 Long Body, 707-100B Long Body
- [TCDS 4A26](https://openairdocs.org/tcds/4A26): The Boeing Company; names 4 of 4 models: 707-300B Series, 707-400 Series, 707-300 Series, 707-300C Series
- [TCDS 4A28](https://openairdocs.org/tcds/4A28): The Boeing Company; names 2 of 2 models: 720B Series, 720 Series

## 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: 6 (6 by airframe model, 0 by engine model)
- Makers: Boeing 6

Models with the most aircraft:

- [Boeing 707-338C](https://openairdocs.org/model/boeing-707-338c): 2 aircraft (airframe model)
- [Boeing 707-368C](https://openairdocs.org/model/boeing-707-368c): 1 aircraft (airframe model)
- [Boeing 707-321B](https://openairdocs.org/model/boeing-707-321b): 1 aircraft (airframe model)
- [Boeing 707-323B](https://openairdocs.org/model/boeing-707-323b): 1 aircraft (airframe model)
- [Boeing 707-351B](https://openairdocs.org/model/boeing-707-351b): 1 aircraft (airframe model)

All 5 models: https://openairdocs.org/ad/66-13-02/models.md
Every aircraft: https://openairdocs.org/ad/66-13-02/aircraft.md

Its text cites no advisory circulars or STCs.

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