AD 2015-14-04
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Kaman | Aerospace Corporation (Kaman) | Airworthiness Directives; Kaman Aerospace Corporation (Kaman) Helicopters |
Unsafe Condition
A crack in an MRB, which could lead to failure of the MRB and subsequent loss of control of the helicopter.
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Required Actions
Inspect each MRB for a crack, wood split, void, or delamination using X-ray and visual inspection. Repair or replace the MRB if a crack, wood split, void, or delamination is found.
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Compliance Time
Before the MRB reaches 3,000 hours time-in-service (TIS) or within 50 hours TIS, whichever occurs later, and thereafter at intervals not exceeding 1,000 hours TIS.
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Affected Aircraft
Kaman Aerospace Corporation Model K-1200 helicopters with main rotor blades (MRB) part numbers K911001-009, K911001-010, K911001-109, or K911001-110 installed.
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Source: Official FAA Source ↗
Retrieved: Apr 6, 2026
Rights: U.S. Government Public Domain
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