AD 2003-24-01
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | MD | Various | Airworthiness Directives; MD Helicopters, Inc. Model 369A, H, HE, HM, HS, D, and E Helicopters |
Unsafe Condition
Fatigue cracking of the main rotor blade due to a high number of torque events (TEs) per hour, leading to blade failure and subsequent loss of control of the helicopter.
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Required Actions
Determine and record the total number of torque events (TEs) on each main rotor blade. Inspect blades with 13,720 TEs and 750 hours time-in-service (TIS) for cracks at specified intervals. Replace blades with airworthy ones if a crack is found. Establish life limits for blades with part numbers 500P2100-BSC, 500P2100-101, and 500P2100-301.
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Compliance Time
Within 12 hours TIS or 30 days, whichever occurs first, for initial recording of TEs. Inspections and replacements as specified based on TEs and TIS.
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Affected Aircraft
MD Helicopters, Inc. Model 369A, H, HE, HM, HS, D, and E helicopters modified with Helicopter Technology Company, LLC, Supplemental Type Certificate (STC) No. SR09172RC, SR09074RC, or SR09184RC.
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Source: Official FAA Source ↗
Retrieved: Apr 6, 2026
Rights: U.S. Government Public Domain
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