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A B747-122 had the right body gear strut door replaced per the maintenance manual but omitted the jacking and retraction of the gear to check for fit and function. Manual procedure not completed.
| Attributes | |
| ACN | 358656 |
| Time | |
| Date | 199701 |
| Day | Sat |
| Local Time Of Day | 1801 To 2400 |
| Place | |
| Locale Reference | airport : sfo |
| State Reference | CA |
| Altitude | agl bound lower : 0 agl bound upper : 0 |
| Environment | |
| Light | Night |
| Aircraft 1 | |
| Operator | common carrier : air carrier |
| Make Model Name | B747-100 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | other |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | other personnel other |
| Qualification | other other : other |
| ASRS Report | 358656 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | other personnel other |
| Qualification | other other : other |
| ASRS Report | 358431 |
| Events | |
| Anomaly | aircraft equipment problem : critical non adherence : far non adherence : published procedure other anomaly other |
| Independent Detector | other other : unspecified |
| Resolutory Action | other |
| Consequence | Other |
| Supplementary | |
| Air Traffic Incident | other |
Narrative:
On jan 1997, I received my job assignment to assist mechanic abcd and mechanic hijk with the installation of the right hand body gear strut door on aircraft. The original door had been removed due to corrosion, it was sent to the maintenance shop for rework. Another door was robbed from an aircraft in overhaul at the maintenance facility in ZZZ and routed to our aircraft. After examining the door and finding it compatible and serviceable, the other mechanics and I proceeded to install the door per maintenance manual. The maintenance manual requires a 'gear swing' to check fit and fair of the new door. We proceeded to get the equipment ready for a gear swing. We soon realized that the floor elevator system in the dock that we were working was not operating. We were told to move the aircraft to jack and move all the equipment down there to prepare for a 'gear swing.' we proceeded to do this. By the time we moved the aircraft to the large hangar, late night shift had come in and was ready to take over the job. We signed the paperwork and entered it into the computer as to what step we had accomplished too. We informed the lead and the foreman that we had installed the door and moved the aircraft to the new hangar for a gear swing that was required per the maintenance manual. We put the write-up and the copy of the maintenance manual along with the robbed unit tag on the planning board for the next crew. At this point I had completed my turnover to the other shift and had signed the paperwork. I proceeded to gather my tools and get ready to go home. The next day at briefing I was informed by mechanic abcd that the late night shift had not done the gear swing and the late night foreman had signed the paperwork as completed per maintenance manual. The dayshift union representative was informed of the situation. He proceeded to contact the engineering department. The engineering department determined that since the aircraft was in revenue service in hnl, the gear door would be removed, put in the cargo pit and flown to XXX for proper installation per the maintenance manual.
Original NASA ASRS Text
Title: A B747-122 HAD THE RIGHT BODY GEAR STRUT DOOR REPLACED PER THE MAINT MANUAL BUT OMITTED THE JACKING AND RETRACTION OF THE GEAR TO CHK FOR FIT AND FUNCTION. MANUAL PROC NOT COMPLETED.
Narrative: ON JAN 1997, I RECEIVED MY JOB ASSIGNMENT TO ASSIST MECH ABCD AND MECH HIJK WITH THE INSTALLATION OF THE R HAND BODY GEAR STRUT DOOR ON ACFT. THE ORIGINAL DOOR HAD BEEN REMOVED DUE TO CORROSION, IT WAS SENT TO THE MAINT SHOP FOR REWORK. ANOTHER DOOR WAS ROBBED FROM AN ACFT IN OVERHAUL AT THE MAINT FACILITY IN ZZZ AND ROUTED TO OUR ACFT. AFTER EXAMINING THE DOOR AND FINDING IT COMPATIBLE AND SERVICEABLE, THE OTHER MECHS AND I PROCEEDED TO INSTALL THE DOOR PER MAINT MANUAL. THE MAINT MANUAL REQUIRES A 'GEAR SWING' TO CHK FIT AND FAIR OF THE NEW DOOR. WE PROCEEDED TO GET THE EQUIP READY FOR A GEAR SWING. WE SOON REALIZED THAT THE FLOOR ELEVATOR SYS IN THE DOCK THAT WE WERE WORKING WAS NOT OPERATING. WE WERE TOLD TO MOVE THE ACFT TO JACK AND MOVE ALL THE EQUIP DOWN THERE TO PREPARE FOR A 'GEAR SWING.' WE PROCEEDED TO DO THIS. BY THE TIME WE MOVED THE ACFT TO THE LARGE HANGAR, LATE NIGHT SHIFT HAD COME IN AND WAS READY TO TAKE OVER THE JOB. WE SIGNED THE PAPERWORK AND ENTERED IT INTO THE COMPUTER AS TO WHAT STEP WE HAD ACCOMPLISHED TOO. WE INFORMED THE LEAD AND THE FOREMAN THAT WE HAD INSTALLED THE DOOR AND MOVED THE ACFT TO THE NEW HANGAR FOR A GEAR SWING THAT WAS REQUIRED PER THE MAINT MANUAL. WE PUT THE WRITE-UP AND THE COPY OF THE MAINT MANUAL ALONG WITH THE ROBBED UNIT TAG ON THE PLANNING BOARD FOR THE NEXT CREW. AT THIS POINT I HAD COMPLETED MY TURNOVER TO THE OTHER SHIFT AND HAD SIGNED THE PAPERWORK. I PROCEEDED TO GATHER MY TOOLS AND GET READY TO GO HOME. THE NEXT DAY AT BRIEFING I WAS INFORMED BY MECH ABCD THAT THE LATE NIGHT SHIFT HAD NOT DONE THE GEAR SWING AND THE LATE NIGHT FOREMAN HAD SIGNED THE PAPERWORK AS COMPLETED PER MAINT MANUAL. THE DAYSHIFT UNION REPRESENTATIVE WAS INFORMED OF THE SIT. HE PROCEEDED TO CONTACT THE ENGINEERING DEPT. THE ENGINEERING DEPT DETERMINED THAT SINCE THE ACFT WAS IN REVENUE SVC IN HNL, THE GEAR DOOR WOULD BE REMOVED, PUT IN THE CARGO PIT AND FLOWN TO XXX FOR PROPER INSTALLATION PER THE MAINT MANUAL.
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.