Airworthiness Directive
AD 2021-23-06: Various Model 234 and Model CH-47D Helicopters
Airworthiness Directives; Various Model 234 and Model CH-47D Helicopters
- Effective
- Jan 4, 2022
- Published
- Dec 20, 2021
- Registered aircraft
- 14
Models this AD may apply to
AI-extracted — verify against originalMatched from the AD's applicability section. Applicability must be confirmed by a mechanic against the aircraft's records.
Aircraft
- Billings Flying Service INC CH-47D
- Columbia Helicopters INC CH-47D
- Tandem Rotor LLC CH47D
- Only with: Applies regardless of type certificate holder.
- Only with: Applies regardless of type certificate holder.
Applicability
From the AD textThis AD applies to Model 234 and Model CH-47D helicopters, regardless of type certificate holder, certificated in any category. Type certificate holders include, but are not limited to: (1) Columbia Helicopters, Inc., (2) Billings Flying Service, Inc., (3) Tandem Rotor, LLC, and (4) Unical Aviation, Inc.
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