AD 90-03-06
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Textron Aviation Inc. | BAe.125 Series 1000A | Airworthiness Directives; BRITISH AEROSPACE (BAe), PLC Model BAe/BH/DH/HS 125-1A, -3A, -400A, and -600A Series Airplanes |
| aircraft | Textron Aviation Inc. | BAe.125 Series 1000B | Airworthiness Directives; BRITISH AEROSPACE (BAe), PLC Model BAe/BH/DH/HS 125-1A, -3A, -400A, and -600A Series Airplanes |
| aircraft | Textron Aviation Inc. | BAe.125 Series 800A | Airworthiness Directives; BRITISH AEROSPACE (BAe), PLC Model BAe/BH/DH/HS 125-1A, -3A, -400A, and -600A Series Airplanes |
| aircraft | Textron Aviation Inc. | BAe.125 Series 800A (C-29A) | Airworthiness Directives; BRITISH AEROSPACE (BAe), PLC Model BAe/BH/DH/HS 125-1A, -3A, -400A, and -600A Series Airplanes |
| aircraft | Textron Aviation Inc. | BAe.125 Series 800A (U-125) | Airworthiness Directives; BRITISH AEROSPACE (BAe), PLC Model BAe/BH/DH/HS 125-1A, -3A, -400A, and -600A Series Airplanes |
| aircraft | Textron Aviation Inc. | BAe.125 Series 800B | Airworthiness Directives; BRITISH AEROSPACE (BAe), PLC Model BAe/BH/DH/HS 125-1A, -3A, -400A, and -600A Series Airplanes |
| aircraft | Textron Aviation Inc. | BH.125 Series 400A | Airworthiness Directives; BRITISH AEROSPACE (BAe), PLC Model BAe/BH/DH/HS 125-1A, -3A, -400A, and -600A Series Airplanes |
| aircraft | Textron Aviation Inc. | BH.125 Series 600A | Airworthiness Directives; BRITISH AEROSPACE (BAe), PLC Model BAe/BH/DH/HS 125-1A, -3A, -400A, and -600A Series Airplanes |
| aircraft | Textron Aviation Inc. | DH.125 Series 1A | Airworthiness Directives; BRITISH AEROSPACE (BAe), PLC Model BAe/BH/DH/HS 125-1A, -3A, -400A, and -600A Series Airplanes |
| aircraft | Textron Aviation Inc. | DH.125 Series 1A-522 | Airworthiness Directives; BRITISH AEROSPACE (BAe), PLC Model BAe/BH/DH/HS 125-1A, -3A, -400A, and -600A Series Airplanes |
Unsafe Condition
Corrosion and/or cracking of the keel skin and local structures between frame 7 and frame 13 and stringers 15 left and 15 right, and center line keel skin lap joint and hydraulic duct attachment angles may occur, leading to reduced structural integrity.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Perform a visual and X-ray inspection for corrosion and/or cracking as per Service Bulletin 51-4. For airplanes with recent inspections, perform within one year after AD effective date; others within 180 days. Revise maintenance program to include inspection procedures within one year of initial inspection. Repair cracks/corrosion within SRM limits or approved method prior to flight. Repetitive inspections every 4 years.
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Compliance Time
Required as indicated, unless previously accomplished.
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Affected Aircraft
BRITISH AEROSPACE (BAe), PLC Model BAe/BH/DH/HS 125-1A, -3A, -400A, and -600A series airplanes, 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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