Airworthiness Directive 2013-11-15
one-timeAirworthiness Directives; Eurocopter Deutschland GmbH Helicopters
What this AD requires
We are adopting a new airworthiness directive (AD) for Eurocopter Deutschland GmbH (Eurocopter) Model BO-105A, BO-105C, BO- 105S, BO-105LS A-1, BO-105LS A-3, EC135 P1, EC135 P2, EC135 P2+, EC135 T1, EC135 T2, EC135 T2+, MBB-BK 117 A-1, MBB-BK 117 A-3, MBB-BK 117 A- 4, MBB-BK 117 B-1, MBB-BK 117 B-2, MBB-BK 117 C-1, and MBB-BK 117 C-2 helicopters with certain part-numbered cantilever assemblies, cyclic stick locking devices, or cyclic stick holder assemblies installed. This AD requires modifying and identifying the cyclic stick cantilever or lock. This AD was prompted by pilots inadvertently taking off with the cyclic locked. The actions of this AD are intended to prevent a pilot taking off with the cyclic in the locked position, which could result in loss of control of the helicopter.
Which aircraft AD 2013-11-15 applies to
Applies per model, each conditioned on the listed part(s) being installed: (1) BO-105A, BO-105C, BO-105S, BO-105LS A-1 with cantilever assembly P/N 105-40132 or 105-40139; (2) BO 105 LS A-3 with cantilever assembly P/N 105-40139; (3) EC135 P1/P2/P2+/T1/T2/T2+, S/N 0005 through 0699 except S/Ns 0076, 0093, 0098, 0099, 0102, 0104, 0106, 0108, 0110, 0111, 0113, 0114, 0116, 0117, and 0119, with cyclic stick locking device P/N L670M1045101/102/104/105/106/107 and Pin P/N L311M1038205 or L311M1099205; (4) MBB-BK117 A-1, A-3, A-4, B-1, B-2, C-1 with cyclic stick holder assembly P/N 117-41140-01, 117-41230-01, or 117-41230-03; (5) MBB-BK117 C-2, S/N 9004 through 9230, with cyclic stick locking device P/N B856M1011101 and Pin P/N L311M1038205 or L311M1099205. Unsafe condition is inadvertent locking of the cyclic prior to takeoff.
Whether AD 2013-11-15 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.