Airworthiness Directive · Amendment 39-17589 · Flight compartment equipment
Eurocopter France (Eurocopter) Helicopters
This AD applies to Eurocopter Model SA-365N, SA-365N1, AS-365N2, AS 365 N3, EC 155B, EC155B1, AS332C, AS332L, AS332L1, AS332L2, and EC225LP helicopters with an EADS Sogerma pilot or co-pilot seat, part number (P/N) 2510106-03-00 or P/N 2510106-06-00, with a serial number 720 through 1451, installed, certificated in any category.
We are adopting a new airworthiness directive (AD) for Eurocopter Model SA-365N, SA-365N1, AS-365N2, AS 365 N3, EC 155B, EC155B1, AS332C, AS332L, AS332L1, AS332L2, and EC225LP helicopters with certain EADS Sogerma pilot and co-pilot seats installed. This AD requires inspecting the rear beam of each seat to determine if all of the weld beads are present and replacing the seat if any weld bead is missing. This AD is prompted by a maintenance inspection that discovered a missing weld bead on the rear beam of a pilot seat. These actions are intended to prevent failure of the pilot and co-pilot seats and subsequent injury to the pilot or co-pilot.
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.
(1) Within 50 hours time-in-service, using a mirror, inspect the rear beam of each seat for weld beads in the areas depicted in the Appendix, Figure 1, of Eurocopter Alert Service Bulletin (ASB) No. AS365-25.01.18 for model SA-365N, SA-365N1, AS-365N2, and AS 365 N3 helicopters; ASB No. EC155-25A114 for model EC155 B and EC155B1 helicopters; ASB No. AS332-25.02.49 for model AS332C, AS332L, AS332L1, and AS332 L2 helicopters; and ASB No. EC225-25A110 for model EC225LP helicopters. All ASBs are Revision 1 and dated August 9, 2012.
(2) If any weld bead is missing from the rear beam, before further flight, remove the seat and replace it with an airworthy seat.
(3) Do not install a seat listed in paragraph (a) of this AD on any helicopter unless it has been inspected as required by this AD.
