Airworthiness Directive 2000-20-18
one-timeAirworthiness Directives; Bell Helicopter Textron Canada Model 407 Helicopters
What this AD requires
This amendment adopts a new airworthiness directive (AD) for Bell Helicopter Textron Canada (BHTC) Model 407 helicopters. This AD requires inspecting the brackets that attach each horizontal stabilizer slat (slat) to the stabilizer for a crack and replacing the slat assembly if a crack is found. Installing airworthy segmented slat assemblies would be required prior to flight after December 31, 2000 and would constitute terminating action for the requirements of this AD. This amendment is prompted by an incident in which a slat separated from a helicopter. The actions specified by this AD are intended to prevent a slat from separating, impact with a main or tail rotor blade, and subsequent loss of control of the helicopter.
Which aircraft AD 2000-20-18 applies to
Requires recurring visual inspection of horizontal-stabilizer slat attachment brackets (P/N 206-023-119-109/-110 or 407-023-801-127/-128) for cracks and replacement of slat assembly P/N 407-023-002-117 with airworthy segmented slat P/N 407-023-001-101 per Bell ASB 407-99-32. Model families inferred from Bell 206/407-prefixed part numbers and the SB number.
Whether AD 2000-20-18 actually applies to your aircraft (by serial and installed parts) and whether it’s already complied with comes from that aircraft’s records.
How AD compliance is recorded
A valid compliance record (14 CFR 43.9) states:
Tailplate reads a tail number’s logbooks and matches every applicable AD — including this one — to its compliance evidence, with recurring next-due dates computed.
Look up a tail number →Read the full directive (Federal Register)Applicability is derived from the FAA directive corpus and is advisory, not a legal airworthiness determination. Compliance is established only from an aircraft’s actual records.