AD 2000-20-18
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Textron | Canada Model 407 | Airworthiness Directives; Bell Helicopter Textron Canada Model 407 Helicopters |
| aircraft | Bell | Helicopter Textron Canada Model 407 | Airworthiness Directives; Bell Helicopter Textron Canada Model 407 Helicopters |
Unsafe Condition
A crack in the brackets that attach each horizontal stabilizer slat to the stabilizer could lead to slat separation, impact with a main or tail rotor blade, 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
Visually inspect the brackets (P/N 206-023-119-109/-110 or 407-023-801-127/-128) attaching the slats (P/N 407-023-002-117) for cracks within 50 hours time-in-service (TIS) and every 100 hours thereafter. If a crack is found, replace the slat assembly (P/N 407-023-002-117) with an airworthy segmented slat assembly (P/N 407-023-001-101) before further flight. If no crack is found, replace each slat assembly with an airworthy segmented slat assembly prior to flight after December 31, 2000.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Within 50 hours time-in-service (TIS) and thereafter at intervals not to exceed 100 hours TIS.
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
Bell Helicopter Textron Canada Model 407 helicopters, serial numbers 53000 through 53347, certificated in any category.
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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