Airworthiness Directive 02-31752
one-timeAirworthiness Directives; Bell Helicopter Textron Canada Limited Model 206L, L-1, L-3, and L-4 Helicopters
What this AD requires
This amendment supersedes an existing airworthiness directive (AD) for the specified Bell Helicopter Textron Canada Limited (BHTCL) model helicopters that currently requires removing the horizontal stabilizer supports and inspecting the edges of the tailboom skins around the horizontal stabilizer openings for a crack. This amendment requires checking and inspecting the tailboom for a crack and modifying or replacing the tailboom as necessary. This amendment also provides a terminating action, incorporates a more recent alert service bulletin (ASB), and increases the compliance time for performing the inspections. This amendment is prompted by several reports of cracks found during mandatory inspections. The actions specified by this AD are intended to detect a crack in the tailboom skin and to prevent separation of the tailboom and subsequent loss of control of the helicopter.
Which aircraft AD 02-31752 applies to
Repetitive visual crack inspections (10-hr, then 5-hr) of tailboom skin around horizontal-stabilizer-support openings; within 50 hrs TIS, remove all four horizontal stabilizer supports P/N 206-023-100 (all dash numbers) and perform a one-time fluorescent-penetrant inspection; within 600 hrs TIS, inspect and modify the tailboom per Bell Helicopter Textron Canada ASB 206L-99-115 Rev F; post-modification repetitive inspection at 1,200-hr intervals.
Whether AD 02-31752 actually applies to your aircraft (by serial and installed parts) and whether it’s already complied with comes from that aircraft’s records.
Supersession
Supersedes AD 99-13-12.
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.