Narrative:

My student (private pilot working on INS rating) and I flew an aircraft, for training purposes, which was 2 hours past the 100 hour inspection. Our pilots are kept informed of 100 hours inspections being due by a tag attached to a clipboard dispatched with the aircraft. After a preflight discussion, I sent my student out to preflight the aircraft, which includes checking when the 100 hour inspection is due. Since my students normally do a thorough preflight, and he being a private pilot familiar with the preflight requirements, I assumed that he had checked to see when the 100 hour inspection was due. Apparently it had not been done, and my student did not catch that it had not been done, or was past due. I believe that the cause of this incident is poor preflight inspection. Also, the aircraft should never have been dispatched to me or my student when it was over the 100 hour inspection. The mechanics who fill out the tag also make mistakes, and sometimes the 100 hour tags fall off the clipboard. To correct the problem, I need to be more aware of my student's preflight, and make them more aware of when the 100 hour inspection is next due. Also the dispatch procedure used by our flying club should be improved so that when a 100 hour inspection is due, the aircraft is automatically grounded. A better system of notifying our pilots of the next 100 hour inspection is also needed. Supplemental information from acn 161076: I was the first pilot to fly this aircraft beyond its 100 hour tach time, but not the only one. 11 other pilots flew the aircraft a total of almost 18 hours beyond the tach time at which it came due for scheduled maintenance. Checking the tach time against the 100 hour time should have been part of my preflight check, but I suppose it has become a norm for club pilots to expect the aircraft to be grounded well before maintenance comes due. I attribute my part of this situation to poor preflight inspection by myself.

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Original NASA ASRS Text

Title: FLT SCHOOL SMA FLOWN OVER 100 HOUR INSPECTION.

Narrative: MY STUDENT (PVT PLT WORKING ON INS RATING) AND I FLEW AN ACFT, FOR TRNING PURPOSES, WHICH WAS 2 HRS PAST THE 100 HR INSPECTION. OUR PLTS ARE KEPT INFORMED OF 100 HRS INSPECTIONS BEING DUE BY A TAG ATTACHED TO A CLIPBOARD DISPATCHED WITH THE ACFT. AFTER A PREFLT DISCUSSION, I SENT MY STUDENT OUT TO PREFLT THE ACFT, WHICH INCLUDES CHKING WHEN THE 100 HR INSPECTION IS DUE. SINCE MY STUDENTS NORMALLY DO A THOROUGH PREFLT, AND HE BEING A PVT PLT FAMILIAR WITH THE PREFLT REQUIREMENTS, I ASSUMED THAT HE HAD CHKED TO SEE WHEN THE 100 HR INSPECTION WAS DUE. APPARENTLY IT HAD NOT BEEN DONE, AND MY STUDENT DID NOT CATCH THAT IT HAD NOT BEEN DONE, OR WAS PAST DUE. I BELIEVE THAT THE CAUSE OF THIS INCIDENT IS POOR PREFLT INSPECTION. ALSO, THE ACFT SHOULD NEVER HAVE BEEN DISPATCHED TO ME OR MY STUDENT WHEN IT WAS OVER THE 100 HR INSPECTION. THE MECHS WHO FILL OUT THE TAG ALSO MAKE MISTAKES, AND SOMETIMES THE 100 HR TAGS FALL OFF THE CLIPBOARD. TO CORRECT THE PROB, I NEED TO BE MORE AWARE OF MY STUDENT'S PREFLT, AND MAKE THEM MORE AWARE OF WHEN THE 100 HR INSPECTION IS NEXT DUE. ALSO THE DISPATCH PROC USED BY OUR FLYING CLUB SHOULD BE IMPROVED SO THAT WHEN A 100 HR INSPECTION IS DUE, THE ACFT IS AUTOMATICALLY GNDED. A BETTER SYS OF NOTIFYING OUR PLTS OF THE NEXT 100 HR INSPECTION IS ALSO NEEDED. SUPPLEMENTAL INFO FROM ACN 161076: I WAS THE FIRST PLT TO FLY THIS ACFT BEYOND ITS 100 HR TACH TIME, BUT NOT THE ONLY ONE. 11 OTHER PLTS FLEW THE ACFT A TOTAL OF ALMOST 18 HRS BEYOND THE TACH TIME AT WHICH IT CAME DUE FOR SCHEDULED MAINT. CHKING THE TACH TIME AGAINST THE 100 HR TIME SHOULD HAVE BEEN PART OF MY PREFLT CHK, BUT I SUPPOSE IT HAS BECOME A NORM FOR CLUB PLTS TO EXPECT THE ACFT TO BE GNDED WELL BEFORE MAINT COMES DUE. I ATTRIBUTE MY PART OF THIS SITUATION TO POOR PREFLT INSPECTION BY MYSELF.

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.