AD 2017-05-04
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
Corrosion of a tension-torsion strap (TT strap), which could result in failure of the TT strap 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
Remove from service affected TT straps that have reached or exceeded 1,000 hours time-in-service (TIS) or 18 months since installation, whichever occurs first, within 25 hours TIS. For all other affected TT straps, remove from service before accumulating 1,000 hours TIS or 18 months since installation, whichever occurs first.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Within 25 hours TIS for TT straps that have reached or exceeded 1,000 hours TIS or 18 months since installation. Before accumulating 1,000 hours TIS or 18 months since installation for all other affected TT straps.
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
Bell Helicopter Textron Canada Limited Model 206A, 206B, 206L, 206L1, 206L3, and 206L4 helicopters with TT straps part number (P/N) 206-011-147-005 with serial numbers BTFS-23868 through BTFS-24277 or P/N 206-011-147-007 with serial numbers BT-22719 through BT-23437.
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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