Narrative:

On jun/xa/99 I accidentally flew an aircraft that was past its time due for 100 hour inspection. Contributing factors to this mistake were: the dispatcher incorrectly calculated the time remaining before 100 hour and told my student that he had at least 1 hour before it was to have a 100 hour inspection and, as the CFI and PIC, I did not confirm this information. The problem was discovered later that evening when arrangements were being made for the 100 hour. Although nothing can be done to correct what has happened, I have talked to my student and stressed the importance of being positive that the aircraft is within required inspection times. I also understand the grave consequences that my complacency may have caused and will take every step in the future to confirm the accuracy of the information gathered as part of my preflight.

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Original NASA ASRS Text

Title: INSTRUCTOR PLT OF A C172 PROVIDED INSTRUCTION WHEN THE ACFT WAS PAST DUE FOR THE REQUIRED 100 HR INSPECTION.

Narrative: ON JUN/XA/99 I ACCIDENTALLY FLEW AN ACFT THAT WAS PAST ITS TIME DUE FOR 100 HR INSPECTION. CONTRIBUTING FACTORS TO THIS MISTAKE WERE: THE DISPATCHER INCORRECTLY CALCULATED THE TIME REMAINING BEFORE 100 HR AND TOLD MY STUDENT THAT HE HAD AT LEAST 1 HR BEFORE IT WAS TO HAVE A 100 HR INSPECTION AND, AS THE CFI AND PIC, I DID NOT CONFIRM THIS INFO. THE PROB WAS DISCOVERED LATER THAT EVENING WHEN ARRANGEMENTS WERE BEING MADE FOR THE 100 HR. ALTHOUGH NOTHING CAN BE DONE TO CORRECT WHAT HAS HAPPENED, I HAVE TALKED TO MY STUDENT AND STRESSED THE IMPORTANCE OF BEING POSITIVE THAT THE ACFT IS WITHIN REQUIRED INSPECTION TIMES. I ALSO UNDERSTAND THE GRAVE CONSEQUENCES THAT MY COMPLACENCY MAY HAVE CAUSED AND WILL TAKE EVERY STEP IN THE FUTURE TO CONFIRM THE ACCURACY OF THE INFO GATHERED AS PART OF MY PREFLT.

Data retrieved from NASA's ASRS site as of July 2007 and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.