AD 60-10-10
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Boeing Defense & Space Group | 44A | Airworthiness Directives; VERTOL Model 44 Series Helicopters |
| aircraft | Boeing Defense & Space Group | 44B | Airworthiness Directives; VERTOL Model 44 Series Helicopters |
Unsafe Condition
Forward rotor blades P/N 42R1002-9, -13, -15, -19, -90, -130, -131, -132, -150, -152, and modified blades P/N 42R1002-137 and -139 (forward) and P/N 42R1002-2, -4, -20, -40 (aft) may fail due to fatigue after accumulating specified service hours, posing a risk of blade separation and loss of control.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Retire forward rotor blades P/N 42R1002-9, -13, -15, -19, -90, -130, -131, -132, -150, -152 at 800 hours of service time. Retire forward blades P/N 42R1002-137, -139 and aft blades P/N 42R1002-2, -4, -20, -40 at 1,350 hours of service time. The AD no longer applies if blades are modified to P/N 42R1002-42, -133, or -135.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Compliance required as indicated.
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
Boeing Defense & Space Group Model 44A and 44B helicopters, all serial numbers in the 44 series.
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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