# AD 90-23-07: Emergency Lighting

- Type: Airworthiness directive
- Status: Current
- Products: ATR - GIE Avions de Transport R gional ATR42-300 and ATR42-320
- Effective: December 10, 1990
- Superseded by: Nothing supersedes this AD
- Product type: Aircraft, Large airplane
- Amendment: 39-6797
- Docket: 90-NM-138-AD
- Registered aircraft: 20 may be affected, by airframe or engine model (OpenAirDocs)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/D148C822512CCC6886256982006FEEAE.0001
- DRS record last changed: May 30, 2024
- Page: https://openairdocs.org/ad/90-23-07

## The airworthiness directive

90-23-07 AEROSPATIALE: Amendment 39-6797. Docket No. 90-NM-138-AD.

Applicability: Model ATR42-300 and -320 series airplanes, Serial Numbers 003 through 150, certificated in any category.

Compliance: Required as indicated, unless previously accomplished.

To ensure the operation of the emergency lighting system when required during an emergency situation, accomplish the following:

A. Within 10 months after the effective date of this AD, modify the emergency lighting control wiring in Zones 212, 210, and 214, in accordance with the Accomplishment Instructions of Aerospatiale Service Bulletin ATR42-33-0017, Revision 1, dated March 2, 1990.

B. Immediately after installing the modification, perform an operational test of the emergency lighting system, in accordance with paragraph D. of Aerospatiale Service Bulletin ATR42-33-0017, Revision 1, dated March 2, 1990.

C. An alternate means of compliance or adjustment of the compliance time, which provides an acceptable level of safety, may be used when approved by the Manager, Standardization Branch, ANM-113, FAA, Transport Airplane Directorate.

NOTE: The request should be submitted directly to the Manager, Standardization Branch, ANM-113, and a copy sent to the cognizant FAA Principal Inspector (PI). The PI will then forward comments or concurrence to the Manager, Standardization Branch, ANM-113.

D. Special flight permits may be issued in accordance with FAR 21.197 and 21.199 to operate airplanes to a base in order to comply with the requirements of this AD.

All persons affected by this directive who have not already received the appropriate service documents from the manufacturer may obtain copies upon request to Aerospatiale, 316 Route de Bayonne, 31060 Toulouse, Cedex 03, France. These documents may be examined at the FAA, Northwest Mountain Region, Transport Airplane Directorate, 1601 Lind Avenue S.W., Renton, Washington.

This amendment (39-6797, AD 90-23-07) becomes effective December 10, 1990.

## Affected data sheets (1) (OpenAirDocs)

The type certificate data sheets whose models the AD names.

- [TCDS A53EU](https://openairdocs.org/tcds/A53EU): ATR – GIE Avions de Transport Régional; names 2 of 11 models: ATR42-300, ATR42-320

## 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: 20 (20 by airframe model, 0 by engine model)
- Makers: Aerospatiale/Aeritalia 16, Aerospatiale/Alenia 2, Atr-Gie Avions De Transport 1, Atr-Gie Avions De Trnsp Rgnl 1

Models with the most aircraft:

- [Aerospatiale/Aeritalia ATR 42-300](https://openairdocs.org/model/aerospatiale-aeritalia-atr-42-300): 12 aircraft (airframe model)
- [Aerospatiale/Aeritalia ATR 42-320](https://openairdocs.org/model/aerospatiale-aeritalia-atr-42-320): 4 aircraft (airframe model)
- [Aerospatiale/Alenia ATR 42-320](https://openairdocs.org/model/aerospatiale-alenia-atr-42-320): 2 aircraft (airframe model)
- [Atr-Gie Avions De Transport ATR-42-320](https://openairdocs.org/model/atr-gie-avions-de-transport-atr-42-320): 1 aircraft (airframe model)
- [Atr-Gie Avions De Trnsp Rgnl ATR 42-300](https://openairdocs.org/model/atr-gie-avions-de-trnsp-rgnl-atr-42-300): 1 aircraft (airframe model)

All 5 models: https://openairdocs.org/ad/90-23-07/models.md
Every aircraft: https://openairdocs.org/ad/90-23-07/aircraft.md

Its text cites no advisory circulars or STCs.

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