# AD 88-01-01: Circuit Breakers

- Type: Airworthiness directive
- Status: Current
- Products: Textron BAe.125 Series 800A, BAe.125 Series 800A (C-29A), BAe.125 Series 800A (U-125) and BAe.125 Series 800B
- Effective: February 2, 1988
- Superseded by: Nothing supersedes this AD
- Product type: Aircraft, Large airplane
- Amendment: 39-5808
- Registered aircraft: 85 may be affected, by airframe or engine model (OpenAirDocs)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/51B153A3AB081027862569F3004DAD25.0001
- DRS record last changed: January 21, 2026
- Page: https://openairdocs.org/ad/88-01-01

## The airworthiness directive

88-01-01 BRITISH AEROSPACE: Amendment 39-5808. Applies to all Model BAe 125 800A and 800B series airplanes listed in British Aerospace BAe 125 Service Bulletin 24-259- (3171B), dated November 1986, certificated in any category. Compliance required as indicated, unless previously accomplished.

To prevent loss of critical flight instruments, accomplish the following:

A. Within the next three months after the effective date of this AD, relocate the 115V. AC stall vane heater power circuit breakers, and modify power supply cable runs for the electronic flight instrument systems in accordance with the accomplishment instructions of British Aerospace BAe 125 Service Bulletin 24-259-(3171B), dated November 1986.

B. An alternate means of compliance or adjustment of the compliance time, which provides an acceptable level of safety and which has the concurrence of an FAA Principal Maintenance Inspector, 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 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 British Aerospace, Inc, Librarian for Service Bulletins, P.O. Box 17414, Dulles International Airport, Washington, D.C. 20041. These documents may be examined at the FAA, Northwest Mountain Region, 17900 Pacific Highway South, Seattle, Washington, or at the Seattle Aircraft Certification Office, 9010 East Marginal Way South, Seattle, Washington.

This amendment becomes effective February 2, 1988.

## 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 2 of 50 models: BAe.125 Series 800A (U-125), BAe.125 Series 800B

## 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: 85 (85 by airframe model, 0 by engine model)
- Makers: British Aerospace 66, Corporate Jets 8, Raytheon Corporate Jets 8, Raytheon 2, Hawker Beechcraft 1

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)
- [Hawker Beechcraft BAE 125-800B](https://openairdocs.org/model/hawker-beechcraft-bae-125-800b): 1 aircraft (airframe model)

All 7 models: https://openairdocs.org/ad/88-01-01/models.md
Every aircraft: https://openairdocs.org/ad/88-01-01/aircraft.md

Its text cites no advisory circulars or STCs.

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