Narrative:

I started working on the aircraft about XA00 on an augmentation valve I troubleshot on a logbook discrepancy. I told the lead this aircraft needed a power run, and won't make a XD30 departure. It was about XE00 crew was onboard and so was the passenger sitting down and waiting. I was done at XE25. My lead had already signed the logbook that the valve was removed and replaced and leak check good -- operations check good. The shift manager knew that the airplane needed to be leak checked. I do not have an airworthiness directive release on the aircraft, and I did not write anything on the logbook. I just removed and replaced the augmentation valve and I should not have my record tarnished for any reason. So I heard it made an air return 10 mins from their destination. When it came back to our zone at ZZZ. They found the xfeed valve leaking. I think the local FAA should know about this incident. Callback conversation with reporter revealed the following information: the reporter stated the augmentation valve was replaced and the duct clamps were torqued per the procedures but the cause of the warning was a loose duct clamp on the pneumatic xfeed valve. The reporter said the lead mechanic cleared the logbook and the required run to pressurize the pneumatic ducting with engine air to check for leaks and pneumatic valve operation was not accomplished. The reporter stated the incident was investigated by the company and is now in the grievance procedure.

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Original NASA ASRS Text

Title: AN MD80 RETURNED TO THE FIELD DUE TO A TAIL COMPARTMENT TEMP HIGH WARNING LIGHT CAUSED BY A LOOSE DUCT CLAMP ON THE PNEUMATIC XFEED VALVE.

Narrative: I STARTED WORKING ON THE ACFT ABOUT XA00 ON AN AUGMENTATION VALVE I TROUBLESHOT ON A LOGBOOK DISCREPANCY. I TOLD THE LEAD THIS ACFT NEEDED A PWR RUN, AND WON'T MAKE A XD30 DEP. IT WAS ABOUT XE00 CREW WAS ONBOARD AND SO WAS THE PAX SITTING DOWN AND WAITING. I WAS DONE AT XE25. MY LEAD HAD ALREADY SIGNED THE LOGBOOK THAT THE VALVE WAS REMOVED AND REPLACED AND LEAK CHK GOOD -- OPS CHK GOOD. THE SHIFT MGR KNEW THAT THE AIRPLANE NEEDED TO BE LEAK CHKED. I DO NOT HAVE AN AIRWORTHINESS DIRECTIVE RELEASE ON THE ACFT, AND I DID NOT WRITE ANYTHING ON THE LOGBOOK. I JUST REMOVED AND REPLACED THE AUGMENTATION VALVE AND I SHOULD NOT HAVE MY RECORD TARNISHED FOR ANY REASON. SO I HEARD IT MADE AN AIR RETURN 10 MINS FROM THEIR DEST. WHEN IT CAME BACK TO OUR ZONE AT ZZZ. THEY FOUND THE XFEED VALVE LEAKING. I THINK THE LCL FAA SHOULD KNOW ABOUT THIS INCIDENT. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO: THE RPTR STATED THE AUGMENTATION VALVE WAS REPLACED AND THE DUCT CLAMPS WERE TORQUED PER THE PROCS BUT THE CAUSE OF THE WARNING WAS A LOOSE DUCT CLAMP ON THE PNEUMATIC XFEED VALVE. THE RPTR SAID THE LEAD MECH CLRED THE LOGBOOK AND THE REQUIRED RUN TO PRESSURIZE THE PNEUMATIC DUCTING WITH ENG AIR TO CHK FOR LEAKS AND PNEUMATIC VALVE OP WAS NOT ACCOMPLISHED. THE RPTR STATED THE INCIDENT WAS INVESTIGATED BY THE COMPANY AND IS NOW IN THE GRIEVANCE PROC.

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.