AD 92-25-11
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Textron Aviation Inc. | BAe.125 Series 1000B | BRITISH AEROSPACE Model DH/BH/HS/BAe 125 Series Airplanes |
| aircraft | Textron Aviation Inc. | BAe.125 Series 800A | BRITISH AEROSPACE Model DH/BH/HS/BAe 125 Series Airplanes |
| aircraft | Textron Aviation Inc. | BAe.125 Series 800A (C-29A) | BRITISH AEROSPACE Model DH/BH/HS/BAe 125 Series Airplanes |
| aircraft | Textron Aviation Inc. | BAe.125 Series 800A (U-125) | BRITISH AEROSPACE Model DH/BH/HS/BAe 125 Series Airplanes |
| aircraft | Textron Aviation Inc. | BAe.125 Series 800B | BRITISH AEROSPACE Model DH/BH/HS/BAe 125 Series Airplanes |
| aircraft | Textron Aviation Inc. | BH.125 Series 400A | BRITISH AEROSPACE Model DH/BH/HS/BAe 125 Series Airplanes |
| aircraft | Textron Aviation Inc. | BH.125 Series 600A | BRITISH AEROSPACE Model DH/BH/HS/BAe 125 Series Airplanes |
| aircraft | Textron Aviation Inc. | DH.125 Series 1A | BRITISH AEROSPACE Model DH/BH/HS/BAe 125 Series Airplanes |
| aircraft | Textron Aviation Inc. | DH.125 Series 1A-522 | BRITISH AEROSPACE Model DH/BH/HS/BAe 125 Series Airplanes |
| aircraft | Textron Aviation Inc. | DH.125 Series 1A/R-522 | BRITISH AEROSPACE Model DH/BH/HS/BAe 125 Series Airplanes |
Unsafe Condition
Rupture of the hydraulic accumulator, failure of one or more hydraulic systems, fire in the tailcone area, and possible structural damage to the aft fuselage.
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Required Actions
Install a placard on the hydraulic box front cover stating accumulators must be charged with nitrogen. Review airplane maintenance records to confirm hydraulic accumulators are charged with nitrogen. If records do not indicate nitrogen charging, discharge and recharge accumulators with nitrogen prior to further flight.
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Compliance Time
Within 6 months after the effective date of this AD
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Affected Aircraft
All Model DH/BH/HS/BAe 125 series airplanes, excluding Model BAe 125-1000A, certificated in any category.
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Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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