AD2004-25-51 calls out the requirement for an approved inspection program for the fuselage spar carry through structure, and associated flight restrictions. This inspection program expired June 2011, and all aircraft over 3,800 total time require modification of this structure to be in compliance. We are installing the Airframe Life Extension Cable (A.L.E.C) AMOC in this structure to permanently comply with this AD. The installation of A.L.E.C will provide relief from AD2004-25-51 and allow the T-34 to fly at full flight envelope. This modification has an unlimited life with a 2,900 hour reinspection interval.
Additional information on the ALEC can be found here: www.gami.com