# AD 86-21-03: Electrical Cables

- Type: Airworthiness directive
- Status: Current
- Products: Textron BAe.125 Series 800A
- Effective: October 24, 1986
- Superseded by: Nothing supersedes this AD
- Product type: Aircraft, Large airplane
- Amendment: 39-5421
- Registered aircraft: 84 may be affected, by airframe or engine model (OpenAirDocs)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/7CBE330259F0788C862569F3004CDF44.0001
- DRS record last changed: January 21, 2026
- Page: https://openairdocs.org/ad/86-21-03

## The airworthiness directive

86-21-03 BRITISH AEROSPACE: Amendment 39-5421. Applies to BAe Model 125- 800A series airplanes, serial numbers listed in BAe Service Bulletin 24-250-(3017D), dated April 8, 1985, certificated in any category. Compliance is required within 90 days after the effective date of this AD. To prevent a potential fire hazard associated with chafing of electrical wiring, accomplish the following, unless previously accomplished:

A. Inspect and replace, as necessary, the affected electrical cables and install the protective treatment to adjacent structures in accordance with BAe Service Bulletin 24-250- (3017D), dated April 8, 1985.

B. 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, Northwest Mountain Region.

C. Special flight permits may be issued in accordance with FAR 21.197 and 21.199 to operate airplanes to a base for the accomplishment of inspections and/or modifications required by the AD.

All persons affected by this directive who have not already received the appropriate service bulletin from the manufacturer may obtain copies upon request to British Aerospace, Inc., Librarian, Box 17414, Dulles International Airport, Washington, D.C. 20041. This document may be examined at FAA, Northwest Mountain Region, 17900 Pacific Highway South, Seattle, Washington, or the Seattle Aircraft Certification Office, 9010 East Marginal Way South, Seattle, Washington.

This Amendment becomes effective October 24, 1986.

## Affected data sheets (1) (OpenAirDocs)

The type certificate data sheets whose models the AD names.

- [TCDS A3EU](https://openairdocs.org/tcds/A3EU): Textron Aviation Inc.; names 1 of 50 models: BAe.125 Series 800A (U-125)

## 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: 84 (84 by airframe model, 0 by engine model)
- Makers: British Aerospace 66, Corporate Jets 8, Raytheon Corporate Jets 8, Raytheon 2

Models with the most aircraft:

- [British Aerospace BAE 125 SERIES 800A](https://openairdocs.org/model/british-aerospace-bae-125-series-800a): 61 aircraft (airframe model)
- [Corporate Jets BAE 125-800A](https://openairdocs.org/model/corporate-jets-bae-125-800a): 8 aircraft (airframe model)
- [Raytheon Corporate Jets BAE 125-800A](https://openairdocs.org/model/raytheon-corporate-jets-bae-125-800a): 8 aircraft (airframe model)
- [British Aerospace BAE 125-800A](https://openairdocs.org/model/british-aerospace-bae-125-800a): 5 aircraft (airframe model)
- [Raytheon BAE 125-800A](https://openairdocs.org/model/raytheon-bae-125-800a): 2 aircraft (airframe model)

All 6 models: https://openairdocs.org/ad/86-21-03/models.md
Every aircraft: https://openairdocs.org/ad/86-21-03/aircraft.md

Its text cites no advisory circulars or STCs.

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