# AD 92-22-04: In-Flight Fire Hazard

- Type: Airworthiness directive
- Status: Current
- Products: Textron BH.125 Series 400A, DH.125 Series 1A, DH.125 Series 1A-522, DH.125 Series 1A/R-522, DH.125 Series 1A/S-522, DH.125 Series 3A, DH.125 Series 3A/R, DH.125 Series 3A/RA and DH.125 Series 400A
- Effective: November 24, 1992
- Superseded by: Nothing supersedes this AD
- Product type: Aircraft, Large airplane
- Amendment: 39-8390
- Docket: 92-NM-58-AD
- Registered aircraft: 4 may be affected, by airframe or engine model (OpenAirDocs)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/24AE9326CB43882C86256A09005E3207.0001
- DRS record last changed: January 21, 2026
- Page: https://openairdocs.org/ad/92-22-04

## The airworthiness directive

92-22-04 BRITISH AEROSPACE: Amendment 39-8390. Docket No. 92-NM-58-AD.

Applicability: Model DH/HS/BH 125 series airplanes, excluding all turbo fan engine-powered Model 125-600A, 125-700A, 125-800A, and 125-1000A series airplanes; as listed in British Aerospace Service Bulletin SB 28-87, dated December 31, 1991; certificated in any category.

Compliance: Required as indicated, unless accomplished previously.

To prevent an in-flight fire hazard in the rear equipment bay, accomplish the following:

  (a) Within 6 months after the effective date of this AD, accomplish a visual inspection for proper alignment of fuel feed pipes at pipe joint couplings, in accordance with British Aerospace Service Bulletin SB 28-87, dated December 31, 1991.

  (1) If misalignment is detected outside the specifications cited in the service bulletin, prior to further flight, correct the alignment by installing an "O" ring modification and fuel pipe clamping modification, in accordancewith the service bulletin.

  (2) If misalignment is not detected outside the specifications cited in the service bulletin, no further action is necessary.

  (b) An alternative method of compliance or adjustment of the compliance time that provides an acceptable level of safety may be used if approved by the Manager, Standardization Branch, ANM-113, FAA, Transport Airplane Directorate. Operators shall submit their requests through an appropriate FAA Principal Maintenance Inspector, who may add comments and then send it to the Manager, Standardization Branch, ANM-113.

NOTE: Information concerning the existence of approved alternative methods of compliance with this AD, if any, may be obtained from the Standardization Branch, ANM-113.

  (c) Special flight permits may be issued in accordance with FAR 21.197 and 21.199 to operate the airplane to a location where the requirements of this AD can be accomplished.

  (d) The inspection and modification shall be done in accordance with British Aerospace Service Bulletin SB 28-87, dated December 31, 1991. This incorporation by reference was approved by the Director of the Federal Register in accordance with 5 U.S.C. 552(a) and 1 CFR Part 51. Copies may be obtained from British Aerospace, PLC, Librarian for Service Bulletins, P.O. Box 17414, Dulles International Airport, Washington, DC. 20041-0414. Copies may be inspected at the FAA, Transport Airplane Directorate, 1601 Lind Avenue, SW., Renton, Washington; or at the Office of the Federal Register, 800 North Capitol Street, NW., suite 700, Washington, DC.

  (e) This amendment becomes effective on November 24, 1992.

## 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 9 of 50 models: DH.125 Series 1A/R-522, BH.125 Series 400A, DH.125 Series 400A, DH.125 Series 3A/R, DH.125 Series 1A, DH.125 Series 1A-522, DH.125 Series 3A, DH.125 Series 1A/S-522…

## 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: 4 (4 by airframe model, 0 by engine model)
- Makers: Hawker Siddeley 4

Models with the most aircraft:

- [Hawker Siddeley BH.125-400A](https://openairdocs.org/model/hawker-siddeley-bh-125-400a): 2 aircraft (airframe model)
- [Hawker Siddeley DH.125-3A/RA](https://openairdocs.org/model/hawker-siddeley-dh-125-3a-ra): 2 aircraft (airframe model)

All 2 models: https://openairdocs.org/ad/92-22-04/models.md
Every aircraft: https://openairdocs.org/ad/92-22-04/aircraft.md

Its text cites no advisory circulars or STCs.

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