Airworthiness Directive · Amendment 39-17475 · Main rotor control
Eurocopter Deutschland GmbH Helicopters
This AD applies to the following Eurocopter Deutschland GmbH (Eurocopter) model helicopters, with a listed cantilever assembly, cyclic stick locking device, or cyclic stick holder assembly part number (P/N) installed, certificated in any category:
(1) Model BO-105A, BO-105C, BO-105S, and BO-105LS A-1 helicopters with a cantilever assembly, P/N 105-40132 or 105-40139, installed.
(2) Model BO 105 LS A-3 helicopters with a cantilever assembly, P/N 105-40139, installed.
(3) Model EC135 P1, EC135 P2, EC135 P2+, EC135 T1, EC135 T2, and EC135 T2+ helicopters, serial number (S/N) 0005 up to and including S/N 0699 except S/Ns 0076, 0093, 0098, 0099, 0102, 0104, 0106, 0108, 0110, 0111, 0113, 0114, 0116, 0117, and 0119, with a cyclic stick locking device, P/N L670M1045101, L670M1045102, L670M1045104, L670M1045105, L670M1045106, or L670M1045107, and Pin, P/N L311M1038205 or L311M1099205, installed.
(4) Model MBB-BK117 A-1, MBB-BK117 A-3, MBB-BK117 A-4, MBB-BK117 B-1, MBB-BK117 B-2, and MBB-BK117 C-1 helicopters, with a cyclic stick holder assembly, P/N 117-41140-01, 117-41230-01, or 117-41230-03, installed.
(5) Model MBB-BK117 C-2 helicopters, S/N 9004 up to and including S/N 9230, with a cyclic stick locking device, P/N B856M1011101, and Pin, P/N L311M1038205 or L311M1099205, installed.
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.
You are responsible for performing each action required by this AD within the specified compliance time unless it has already been accomplished prior to that time.
Within 100 hours time-in-service:
(1) For Model BO-105A, BO-105C, BO-105S, and BO-105LS A-1 helicopters, modify and identify the cyclic stick locking device by following the Accomplishment Instructions, paragraphs 2.B.1. through 2.B.2.4 and 2.B.3. through 2.B.3.3., of Eurocopter Alert Service Bulletin (ASB) No. BO105-40-106, dated December 19, 2008.
(2) For Model BO-105 LS A-3 helicopters, modify and identify the cyclic stick locking device by following the Accomplishment Instructions, paragraphs 2.B.1.through 2.B.1.3, of Eurocopter ASB No. ASB-BO 105 LS 40-10, dated May 8, 2009.
(3) For Model EC135 P1, EC135 P2, EC135 P2+, EC135 T1, EC135 T2, and EC135 T2+ helicopters, modify and identify the cyclic stick cantilever by following the Accomplishment Instructions, paragraphs 3.B. through 3.C., of Eurocopter ASB EC135-67A-015, dated April 14, 2008.
(4) For Model 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, and MBB-BK 117 C-1 helicopters, modify and identify the cyclic stick locking device by following the Accomplishment Instructions, paragraphs 2.B.1. through 2.B.2.2., of Eurocopter ASB No. ASB-MBB-BK117-40-113, dated December 22, 2008.
(5) For Model MBB-BK117 C-2 helicopters, modify and identify the cyclic stick cantilever by following the Accomplishment Instructions, paragraphs 3.B. through 3.C., of Eurocopter ASB MBB BK117 C-2-67A-008, dated April 14, 2008.
The aircraft, engines and makers this AD names, by the model designations in its text. A model listed here may still be outside the AD's serial ranges.
