Aviation accident MIA97LA072

Total loss of engine power due to undetermined reasons. Contributing to the accident was the unsuitable terrain encountered during the forced landing. Findings of the follow-up investigation were 1) The airplane had not been operated and no annual inspections were performed between the effective date of Airworthiness Directive 93-16-15 and the date of the last annual inspection (May 1996), 2) AD 93-16-15 requiring replacement of the installed fuel pump drive coupling was not complied with by the IA at the last annual inspection and no entry was made in the maintenance records indicating compliance required within 30 hours time in service, 3) the pilot unknowingly operated the airplane approximately 8 hours past the 30 hour compliance time specified by the AD, and 4) the reason for the AD (mechanical damage to the fuel pump drive coupling), was not present in the accident fuel pump drive coupling.