APU mounting bolt not installed.

Attributes
ACN	288231
Time
Date	199411
Day	Sat
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : sea
State Reference	WA
Altitude	agl bound lower : 0 agl bound upper : 0
Aircraft 1
Operator	common carrier : air carrier
Make Model Name	B737-300
Operating Under FAR Part	Part 121
Flight Phase	other
Flight Plan	None
Person 1
Affiliation	company : air carrier
Function	other personnel other
Qualification	other other : other
ASRS Report	288231
Person 2
Affiliation	company : air carrier
Function	other personnel other
Qualification	other other : other
ASRS Report	288027
Events
Anomaly	aircraft equipment problem : less severe non adherence : published procedure other anomaly other
Independent Detector	other other : unspecified
Resolutory Action	none taken : detected after the fact other
Consequence	Other
Supplementary
Air Traffic Incident	other
Situations
Publication	Unspecified

Narrative:

After installing a new APU on aircraft, I noticed a large bolt lying on the bed of the lift. I commented to my fellow workers that it did not seem part of the APU. Then I forgot about the bolt. At our shift end, we discussed with early grave as to the function of the bolt. Looking at the maintenance manual, we saw that it was a safety bolt to the right aft mount. We called down line maintenance to have the bolt installed. I did not look at the maintenance manual to prevent occurrence. From now on I will print my copy of work being done and read before and after job. Supplemental information from acn 288027: I was given no turnover because the crew that removed APU had gone home. There were parts all over. Some from generator removal, some from APU. During installation, the supervisor kept checking on us and asking how much longer it was scheduled on a revenue flight. The bolt is a secondary mount bolt and it didn't get installed. Review of the maintenance manual calls for installing the bolt and references a picture. We didn't have that picture in our paperwork that the previous shift printed.

Original NASA ASRS Text

Title: APU MOUNTING BOLT NOT INSTALLED.

Narrative: AFTER INSTALLING A NEW APU ON ACFT, I NOTICED A LARGE BOLT LYING ON THE BED OF THE LIFT. I COMMENTED TO MY FELLOW WORKERS THAT IT DID NOT SEEM PART OF THE APU. THEN I FORGOT ABOUT THE BOLT. AT OUR SHIFT END, WE DISCUSSED WITH EARLY GRAVE AS TO THE FUNCTION OF THE BOLT. LOOKING AT THE MAINT MANUAL, WE SAW THAT IT WAS A SAFETY BOLT TO THE R AFT MOUNT. WE CALLED DOWN LINE MAINT TO HAVE THE BOLT INSTALLED. I DID NOT LOOK AT THE MAINT MANUAL TO PREVENT OCCURRENCE. FROM NOW ON I WILL PRINT MY COPY OF WORK BEING DONE AND READ BEFORE AND AFTER JOB. SUPPLEMENTAL INFO FROM ACN 288027: I WAS GIVEN NO TURNOVER BECAUSE THE CREW THAT REMOVED APU HAD GONE HOME. THERE WERE PARTS ALL OVER. SOME FROM GENERATOR REMOVAL, SOME FROM APU. DURING INSTALLATION, THE SUPVR KEPT CHKING ON US AND ASKING HOW MUCH LONGER IT WAS SCHEDULED ON A REVENUE FLT. THE BOLT IS A SECONDARY MOUNT BOLT AND IT DIDN'T GET INSTALLED. REVIEW OF THE MAINT MANUAL CALLS FOR INSTALLING THE BOLT AND REFS A PICTURE. WE DIDN'T HAVE THAT PICTURE IN OUR PAPERWORK THAT THE PREVIOUS SHIFT PRINTED.

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.