AD 2022-21-11
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Textron | Inc | Airworthiness Directives; Bell Textron Inc. Helicopters and Various Restricted Category Helicopters |
| aircraft | Bell | Textron Inc | Airworthiness Directives; Bell Textron Inc. Helicopters and Various Restricted Category Helicopters |
Unsafe Condition
Cracked main rotor blades (MRBs) with chordwise cracks originating from the extreme trailing edge between blade station 190 and 210.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Cleaning certain areas of the upper and lower skin surfaces of each MRB with a cheesecloth, visually checking for unsmooth areas and surfaces that snag the cheesecloth or cause it to fray, wiping each MRB with isopropyl alcohol and immediately after the blade dries, inspecting the area for a dark line, which is an indication that excess alcohol is bleeding out of a crack or edge void, and removing any cracked MRB from service.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Before the first flight of each day, and at 25-hour intervals, or within 12 months of effective date, whichever occurs first.
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Affected Aircraft
Bell Textron Inc. Model 204B, 205A, and 205A-1 helicopters, and various restricted category helicopters with main rotor blade part number 204-011-250-001, -005, -009, -113, or -117 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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