AD 2012-14-10
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Boeing | Various | Airworthiness Directives; Boeing Vertol (Type Certificate Currently Held by Columbia Helicopters, Inc. (CHI)) and Kawasaki Heavy Industries, Limited Helicopters (Kawasaki) |
Unsafe Condition
Failure of an upper collective pitch control yoke bolt (bolt).
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Required Actions
Before further flight, replace bolts, P/N 107C2733-1 and P/N 107C2733-2, with airworthy bolts, P/N C07C2700-1, and torque the nut to 450-500 in-lbs. Prohibit installing washer P/N A02C3112-13 with bolt P/N C07C2700-1, and installing bolt P/N 107C2733-1 and P/N 107C2733-2 on any helicopter.
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Compliance Time
Before further flight
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Affected Aircraft
Boeing Vertol (Type Certificate Currently Held by Columbia Helicopters, Inc. (CHI)) Model 107-II and Kawasaki Heavy Industries, Limited Model KV107-II and KV107-IIA helicopters with an upper collective pitch control assembly, part number (P/N) 107CK003-2 or 107CK002-2, installed, certificated in any category.
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Source: Official FAA Source ↗
Retrieved: Apr 6, 2026
Rights: U.S. Government Public Domain
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