AD 91-19-05
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Textron Aviation Inc. | BAe.125 Series 800A | BRITISH AEROSPACE Model BAe 125-800A, HS.125-700A, and DH/BH/HS 125 Series Airplanes |
| aircraft | Textron Aviation Inc. | BH.125 Series 400A | BRITISH AEROSPACE Model BAe 125-800A, HS.125-700A, and DH/BH/HS 125 Series Airplanes |
| aircraft | Textron Aviation Inc. | BH.125 Series 600A | BRITISH AEROSPACE Model BAe 125-800A, HS.125-700A, and DH/BH/HS 125 Series Airplanes |
| aircraft | Textron Aviation Inc. | DH.125 Series 1A | BRITISH AEROSPACE Model BAe 125-800A, HS.125-700A, and DH/BH/HS 125 Series Airplanes |
| aircraft | Textron Aviation Inc. | DH.125 Series 1A-522 | BRITISH AEROSPACE Model BAe 125-800A, HS.125-700A, and DH/BH/HS 125 Series Airplanes |
| aircraft | Textron Aviation Inc. | DH.125 Series 1A/R-522 | BRITISH AEROSPACE Model BAe 125-800A, HS.125-700A, and DH/BH/HS 125 Series Airplanes |
| aircraft | Textron Aviation Inc. | DH.125 Series 1A/S-522 | BRITISH AEROSPACE Model BAe 125-800A, HS.125-700A, and DH/BH/HS 125 Series Airplanes |
| aircraft | Textron Aviation Inc. | DH.125 Series 3A | BRITISH AEROSPACE Model BAe 125-800A, HS.125-700A, and DH/BH/HS 125 Series Airplanes |
| aircraft | Textron Aviation Inc. | DH.125 Series 3A/R | BRITISH AEROSPACE Model BAe 125-800A, HS.125-700A, and DH/BH/HS 125 Series Airplanes |
| aircraft | Textron Aviation Inc. | DH.125 Series 3A/RA | BRITISH AEROSPACE Model BAe 125-800A, HS.125-700A, and DH/BH/HS 125 Series Airplanes |
Unsafe Condition
The unsafe condition involves crossed wiring, improperly identified or unidentified wiring and wiring supports, missing wiring supports, and loose or improperly locked electrical connectors in the engine fire extinguisher system wiring, which could result in loss of fire extinguishment capability.
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Required Actions
Within 30 days after the effective date, perform a visual inspection of the engine fire extinguisher system wiring per British Aerospace Service Bulletin 26-31. If discrepancies are found, correct them before further flight per the same service bulletin.
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Compliance Time
Within 30 days after the effective date of this AD
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Affected Aircraft
British Aerospace Model BAe 125-800A, HS.125-700A, and DH/BH/HS 125 series airplanes retrofitted with Garrett engines pre-mod 253274A, certificated in any category.
AI-generated summary from the source AD text. Verify against the official source before acting.
Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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