AD 85-08-01
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Airbus Helicopters Deutschland GmbH | BO-105A | Airworthiness Directive; MESSERSCHMITT-BOLKOW-BLOHM GmbH Model BO-105 Series Helicopters |
| aircraft | Airbus Helicopters Deutschland GmbH | BO-105C | Airworthiness Directive; MESSERSCHMITT-BOLKOW-BLOHM GmbH Model BO-105 Series Helicopters |
| aircraft | Airbus Helicopters Deutschland GmbH | BO-105S | Airworthiness Directive; MESSERSCHMITT-BOLKOW-BLOHM GmbH Model BO-105 Series Helicopters |
Unsafe Condition
Cracks in the vertical fin spar and skins and possible failure of the vertical fin.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Accomplish modifications specified in MBB BO-105 Service Bulletin No. 30-13, Rev. 2 (for S/N S1-S310) and Service Bulletin No. 30-18, Rev. 3 (for S/N S1-S350). Aircraft may be flown to a base for compliance under FAR Sections 21.197 and 21.199. Equivalent means require FAA approval.
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Compliance Time
within 50 hours time in service after the effective date of this AD
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Affected Aircraft
MESSERSCHMITT-BOLKOW-BLOHM GmbH Model BO-105 series helicopters, S/N's S1 through S350, equipped with empennage P/N 105-30101
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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