AD 2019-11-05
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Textron | Canada Limited | Airworthiness Directives; Bell Helicopter Textron Canada Limited Helicopters |
| aircraft | Bell | Helicopter Textron Canada Limited | Airworthiness Directives; Bell Helicopter Textron Canada Limited Helicopters |
Unsafe Condition
a worn pitch link. This condition, if not corrected, could result in pitch link failure and subsequent loss of control of the helicopter.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Within 50 hours time-in-service (TIS) and thereafter at intervals not to exceed 50 hours TIS: (i) Perform a dimensional inspection of each inboard and outboard pitch link assembly for axial and radial bearing play. With a 10X or higher power magnifying glass, inspect the bearing liner for a crack, deterioration of the liner, and extrusion of the liner from the plane. If there is axial or radial play that exceeds allowable limits, or if there is a crack, deterioration of the liner, or extrusion of the liner, before further flight, replace the bearing. (ii) Inspect the pitch link assembly sealant for pin holes and voids and to determine if the sealant thickness is 0.025 inch (0.64 mm) or less, extends over the roll staked lip by 0.030 inch (0.76 mm) or more, and is clear of the bearing ball. If there is a pin hole or void, or if the sealant exceeds 0.025 inch (0.64 mm) in thickness, before further flight, replace the bearing. (iii) Replace the bearing within 200 hours of the initial inspection or at the next 50 hours TIS inspection if the hours TIS of a pitch link assembly exceed 250 hours TIS or are unknown.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Within 50 hours TIS
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Affected Aircraft
Bell Helicopter Textron Canada Limited Model 429 helicopters, certificated in any category, with a pitch link assembly part number (P/N) 429-012-112-101, 429-012-112-103, 429-012-112-101FM, or 429-012-112-103FM installed.
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Source: Official FAA Source ↗
Retrieved: Apr 4, 2026
Rights: U.S. Government Public Domain
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