Narrative:

I am an individual working the A320 heavy maintenance visit in ZZZ. Our A320 aircraft have been having problems with fuel leaks in the 4GA jack bolt fittings for the main landing gear in the rib #3 area. The repair was a temporary maintenance approval yy-ZZZ issued from air carrier ZZZ engineering (air carrier) dated may/99. Leaks have been repaired using this temporary maintenance approval. The temporary maintenance approval (yy-ZZZ) stated to torque the 4 bolts at rib #3 on the main landing gear fitting to 48-52 inch pounds. Bear in mind this temporary maintenance approval (yy-ZZZ) was used for leaks in this area for leaks as a standard repair. The torque for these bolts was questioned in sep/99 by several fuel tank workers as being too low. On sep/xa/99 I was working on a fuel team sealing the 4 bolts in question on the left wing of an A320 when one of my co-workers was informed by inspection that changes have been made to temporary maintenance approval yy-ZZZ. The individual spoke with and received temporary maintenance approval yy-ZZZ revision a dated jun/99 which stated that the torque was changed to 48-52 ft pounds. The new temporary maintenance approval (yy-ZZZ revision a) did not make it to the work area till sep/xb/99, affecting several aircraft now in revenue service.

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Original NASA ASRS Text

Title: SEVERAL AIRBUS A320'S WERE RELEASED FOR SVC IN NON COMPLIANCE WITH THE JACK BOLT FITTING FASTENERS TORQUED INCORRECTLY.

Narrative: I AM AN INDIVIDUAL WORKING THE A320 HVY MAINT VISIT IN ZZZ. OUR A320 ACFT HAVE BEEN HAVING PROBS WITH FUEL LEAKS IN THE 4GA JACK BOLT FITTINGS FOR THE MAIN LNDG GEAR IN THE RIB #3 AREA. THE REPAIR WAS A TEMPORARY MAINT APPROVAL YY-ZZZ ISSUED FROM ACR ZZZ ENGINEERING (ACR) DATED MAY/99. LEAKS HAVE BEEN REPAIRED USING THIS TEMPORARY MAINT APPROVAL. THE TEMPORARY MAINT APPROVAL (YY-ZZZ) STATED TO TORQUE THE 4 BOLTS AT RIB #3 ON THE MAIN LNDG GEAR FITTING TO 48-52 INCH LBS. BEAR IN MIND THIS TEMPORARY MAINT APPROVAL (YY-ZZZ) WAS USED FOR LEAKS IN THIS AREA FOR LEAKS AS A STANDARD REPAIR. THE TORQUE FOR THESE BOLTS WAS QUESTIONED IN SEP/99 BY SEVERAL FUEL TANK WORKERS AS BEING TOO LOW. ON SEP/XA/99 I WAS WORKING ON A FUEL TEAM SEALING THE 4 BOLTS IN QUESTION ON THE L WING OF AN A320 WHEN ONE OF MY CO-WORKERS WAS INFORMED BY INSPECTION THAT CHANGES HAVE BEEN MADE TO TEMPORARY MAINT APPROVAL YY-ZZZ. THE INDIVIDUAL SPOKE WITH AND RECEIVED TEMPORARY MAINT APPROVAL YY-ZZZ REVISION A DATED JUN/99 WHICH STATED THAT THE TORQUE WAS CHANGED TO 48-52 FT LBS. THE NEW TEMPORARY MAINT APPROVAL (YY-ZZZ REVISION A) DID NOT MAKE IT TO THE WORK AREA TILL SEP/XB/99, AFFECTING SEVERAL ACFT NOW IN REVENUE SVC.

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.