Aircraft Accident Investigation Report

10 The Certificate of Registration was issued on February 13, 2014, with an expiration date of February 29, 2020 to MUSTANG SALLY AVIATION LLC with registration markings N101KA. The Certificate of Airworthiness was issued on May 23, 1979 in the Normal & Utility Categories. The last scheduled inspection conducted on the aircraft was a 50 hour inspection which was accomplished on September 26, 2016 at a stated Aircraft Total Time of 11216.2 hours. The aircraft was operated for approximately 36.6 hours since the last inspection. The last 100 hour inspection conducted on the aircraft was accomplished on June 24, 2016 at a stated Aircraft Total Time of 11169.1 hours The last 200 hour/ Annual inspection conducted on the aircraft was accomplished on January 12, 2016 at a stated Aircraft Total Time of 11084.0 hours On November 10, 2016 some of the maintenance records were collected from the operator’s facility at Tinson Pen Aerodrome, these included the current airframe, engine and propeller logbooks. Additional maintenance records were provided by the operator on December 1, 2016, however to date not all the maintenance records for the aircraft have been provided. 1.6.1 Engine The engine fitted to the aircraft was manufactured by Lycoming under Production Certificate 3 as a Model O-320-H2AD and certified under Type Certificate E-274. Engine Serial Number L-3872-76 was manufactured as new on March 31, 1978. The engine records indicate that it was installed on Cessna 172N aircraft with registration markings N737NG on April 6, 1978. An entry dated February 23, 1993 (engine total time: 972.3) in the engine records reflects that the camshaft, main bearings, all lifters, No. 2 engine cylinder push rods and rocker arms were replaced; it also stated that the No. 2 cylinder was repaired by J & J Air Parts Inc. (Repair Station No. JE2R921K). A FAA Form 337 (Major Repair & Alteration) on file in Oklahoma City (FAA Aircraft Registration Branch) for N737NG indicates that the engine (S/N L-3872-76) was removed from that aircraft on May 18, 2015. There was no entry seen in the engine logbook for the removal of the engine from that aircraft. A maintenance entry in the current engine logbook states that the engine was overhauled on June 17, 2014 by One Stop Aviation (Repair Station No. XR3R981L) under Work Order 25624 with an engine total time recorded as 1580.3 hours as seen in Exhibit No. 1, however no Authorised Release Certificate nor a copy of the work order has been produced to date despite numerous requests made to the operator. The Repair Station was contacted in order to obtain a copy of the work order; in their response it was reported that the maintenance entry was forged and that they did not have any information regarding this engine. The aircraft records state that the engine was fitted to the aircraft on October 16, 2015 at Airframe Total Time 11084 hours (aircraft tach time 1084.0). The engine time run since installation on the aircraft was approximately 168.8 hours. The engine total time could