AD 81-14-05
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Kawasaki Heavy Industries, Limited | KV107-II | Airworthiness Directives; KAWASAKI HEAVY INDUSTRIES, LTD. Model KV 107-II and KV 107-IIA Helicopters |
| aircraft | Kawasaki Heavy Industries, Limited | KV107-IIA | Airworthiness Directives; KAWASAKI HEAVY INDUSTRIES, LTD. Model KV 107-II and KV 107-IIA Helicopters |
Unsafe Condition
Fatigue failure of the rotor pitch housing due to cracks in the lug area of the pitch bearing housings and blade sockets.
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Required Actions
Install crack detector wires on pitch bearing housings per Kawasaki Service Bulletin KSB-V107-615 or FAA-approved equivalent. Inspect lug areas for cracks at specified intervals and continue inspections at intervals not exceeding 25 or 50 hours time in service. Replace cracked parts with serviceable parts or FAA-approved equivalents before further flight. Retire pitch bearing housings prior to 5,000 hours time in service.
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Compliance Time
Compliance required as indicated, unless already accomplished.
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Affected Aircraft
Kawasaki Heavy Industries, Limited Model KV107-II and KV107-IIA helicopters, certificated in all categories.
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Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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