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A DC10-30F was dispatched with a #3 engine driven hydraulic pump that would not bypass after extensive troubleshooting and repair efforts.
| Attributes | |
| ACN | 371310 |
| Time | |
| Date | 199703 |
| Day | Sat |
| Local Time Of Day | 0001 To 0600 |
| Place | |
| Locale Reference | airport : zzz |
| State Reference | US |
| Altitude | agl bound lower : 0 agl bound upper : 0 |
| Environment | |
| Light | Night |
| Aircraft 1 | |
| Controlling Facilities | tower : stl |
| Operator | common carrier : air carrier |
| Make Model Name | DC-10 30F |
| 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 | 371310 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | other personnel other |
| Qualification | other other : other |
| Events | |
| Anomaly | aircraft equipment problem : less severe other anomaly other |
| Independent Detector | other flight crewa other other : unspecified cockpit |
| Resolutory Action | none taken : insufficient time |
| Consequence | Other |
| Supplementary | |
| Air Traffic Incident | other |
Narrative:
On mar/xx/97, I was assigned to work air carrier aircraft XXX. The aircraft had a logbook write-up that read '#3 engine, right hydraulic pump, will not turn off with switch in the off position.' I was the lead mechanic, and I assigned an right&east mechanic to check out the affected pump. The right&east found a broken connector on the pump. He replaced the connector (cannon plug). I wrote a job card to have an operational check made. After releasing the aircraft to the taxi crew, I called the line desk to report that the pump still would not shut off with the engine running. The line lead mechanic wrote a job card to cover that discrepancy. This card was signed off in error, the lead then alerted the international crew to let them know what had happened. The supervisor told me their computer printer number and I wrote and sent a new job card indicating that '#3 right hydraulic pump will not turn off.'
Original NASA ASRS Text
Title: A DC10-30F WAS DISPATCHED WITH A #3 ENG DRIVEN HYD PUMP THAT WOULD NOT BYPASS AFTER EXTENSIVE TROUBLESHOOTING AND REPAIR EFFORTS.
Narrative: ON MAR/XX/97, I WAS ASSIGNED TO WORK ACR ACFT XXX. THE ACFT HAD A LOGBOOK WRITE-UP THAT READ '#3 ENG, R HYD PUMP, WILL NOT TURN OFF WITH SWITCH IN THE OFF POS.' I WAS THE LEAD MECH, AND I ASSIGNED AN R&E MECH TO CHK OUT THE AFFECTED PUMP. THE R&E FOUND A BROKEN CONNECTOR ON THE PUMP. HE REPLACED THE CONNECTOR (CANNON PLUG). I WROTE A JOB CARD TO HAVE AN OPERATIONAL CHK MADE. AFTER RELEASING THE ACFT TO THE TAXI CREW, I CALLED THE LINE DESK TO RPT THAT THE PUMP STILL WOULD NOT SHUT OFF WITH THE ENG RUNNING. THE LINE LEAD MECH WROTE A JOB CARD TO COVER THAT DISCREPANCY. THIS CARD WAS SIGNED OFF IN ERROR, THE LEAD THEN ALERTED THE INTL CREW TO LET THEM KNOW WHAT HAD HAPPENED. THE SUPVR TOLD ME THEIR COMPUTER PRINTER NUMBER AND I WROTE AND SENT A NEW JOB CARD INDICATING THAT '#3 R HYD PUMP WILL NOT TURN OFF.'
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.