Narrative:

I performed a procedure which did not follow established maintenance procedures. This happened on approximately 9 engines. When questioned by management on our procedures, we determined that our process was not in strict compliance with written procedures. The procedure involved a torque and stretch method process. After many tests, we established that the torque and stretch method resulted in a final torque of 275 inch pounds, and therefore believed that the required torque of 275 inch pounds could be attained without going through the stretching procedure. I now realize that I deviated from the established procedures and in the future, I will abide by standard practices.

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Original NASA ASRS Text

Title: DC9-50 JT8D-219 LOW PRESSURE COMPRESSOR ASSEMBLY BOLTS WERE IMPROPERLY TORQUED USING THE BOLT STRETCH PROC.

Narrative: I PERFORMED A PROC WHICH DID NOT FOLLOW ESTABLISHED MAINT PROCS. THIS HAPPENED ON APPROX 9 ENGS. WHEN QUESTIONED BY MGMNT ON OUR PROCS, WE DETERMINED THAT OUR PROCESS WAS NOT IN STRICT COMPLIANCE WITH WRITTEN PROCS. THE PROC INVOLVED A TORQUE AND STRETCH METHOD PROCESS. AFTER MANY TESTS, WE ESTABLISHED THAT THE TORQUE AND STRETCH METHOD RESULTED IN A FINAL TORQUE OF 275 INCH LBS, AND THEREFORE BELIEVED THAT THE REQUIRED TORQUE OF 275 INCH LBS COULD BE ATTAINED WITHOUT GOING THROUGH THE STRETCHING PROC. I NOW REALIZE THAT I DEVIATED FROM THE ESTABLISHED PROCS AND IN THE FUTURE, I WILL ABIDE BY STANDARD PRACTICES.

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.