AD 2019-05-04
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | MD | Various | Airworthiness Directives; MD Helicopters, Inc. (MDHI), Helicopters |
Unsafe Condition
a crack in an MRB
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
inspect each MRB trim tab end at the trailing edge corner where the trim tab and MRB meet for a crack, and inspect the top and bottom surface of each MRB adjacent to the inboard trim tab corner for a crack, and replace the MRB if there is a crack
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Within 25 hours time-in-service, and thereafter at each 100-hour inspection or annual inspection, whichever occurs first
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
MD Helicopters, Inc., Model 369A, 369D, 369E, 369FF, 369H, 369HE, 369HM, 369HS, 500N, and 600N helicopters, with a main rotor blade (MRB) part number 369A1100, 369D21100, 369D21102, 369D21120, 369D21121, 369D21123, 500P2100, or 500P2300, all dash numbers, installed
AI-generated summary from the source AD text. Verify against the official source before acting.
Source: Official FAA Source ↗
Retrieved: Apr 6, 2026
Rights: U.S. Government Public Domain
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