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A B737-300 was dispatched with the left pack inoperative in automatic. Logbook deferral indicates right pack inoperative in automatic per MEL. Maintenance controller gave technician wrong reference.
| Attributes | |
| ACN | 722304 |
| Time | |
| Date | 200512 |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | airport : zzz.airport |
| State Reference | AB |
| Altitude | agl single value : 0 |
| Aircraft 1 | |
| Controlling Facilities | tower : zzz.tower |
| Operator | common carrier : air carrier |
| Make Model Name | B737-300 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | ground : maintenance |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | maintenance : technician |
| Qualification | technician : airframe technician : powerplant |
| ASRS Report | 722304 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | oversight : coordinator |
| Events | |
| Anomaly | aircraft equipment problem : critical maintenance problem : non compliance with mel non adherence : far non adherence : published procedure |
| Independent Detector | aircraft equipment other aircraft equipment : left auto temp far other other : 1 |
| Resolutory Action | none taken : detected after the fact |
| Consequence | other other |
| Factors | |
| Maintenance | contributing factor : schedule pressure performance deficiency : non compliance with legal requirements performance deficiency : logbook entry |
| Supplementary | |
| Problem Areas | Environmental Factor Maintenance Human Performance Aircraft Chart Or Publication |
| Primary Problem | Maintenance Human Performance |
Narrative:
I troubleshot the left pack automatic-temperature control system; but was unable to repair in a timely manner; so I elected to MEL the system. I contacted maintenance control. The controller had a hard time with the computer and it took a long time to get the numbers. I was given an MEL of 21-19 and it should have been a 21-21. The maintenance controllers do a good job; however it would be to the mechanics' and the maintenance controllers' advantage if the mechanic had a hard copy of the MEL to refer to. I realize we work in a computer world; however the mechanic's process at the gate has not changed in 30 yrs. We don't have the convenience at the gate to double-check each other. We need hard copies to carry to the gates. It would be beneficial also for special procedures on certain MEL's. We need hard copies.
Original NASA ASRS Text
Title: A B737-300 WAS DISPATCHED WITH THE L PACK INOP IN AUTO. LOGBOOK DEFERRAL INDICATES R PACK INOP IN AUTO PER MEL. MAINT CTLR GAVE TECHNICIAN WRONG REF.
Narrative: I TROUBLESHOT THE L PACK AUTO-TEMP CTL SYS; BUT WAS UNABLE TO REPAIR IN A TIMELY MANNER; SO I ELECTED TO MEL THE SYS. I CONTACTED MAINT CTL. THE CTLR HAD A HARD TIME WITH THE COMPUTER AND IT TOOK A LONG TIME TO GET THE NUMBERS. I WAS GIVEN AN MEL OF 21-19 AND IT SHOULD HAVE BEEN A 21-21. THE MAINT CTLRS DO A GOOD JOB; HOWEVER IT WOULD BE TO THE MECHS' AND THE MAINT CTLRS' ADVANTAGE IF THE MECH HAD A HARD COPY OF THE MEL TO REFER TO. I REALIZE WE WORK IN A COMPUTER WORLD; HOWEVER THE MECH'S PROCESS AT THE GATE HAS NOT CHANGED IN 30 YRS. WE DON'T HAVE THE CONVENIENCE AT THE GATE TO DOUBLE-CHK EACH OTHER. WE NEED HARD COPIES TO CARRY TO THE GATES. IT WOULD BE BENEFICIAL ALSO FOR SPECIAL PROCS ON CERTAIN MEL'S. WE NEED HARD COPIES.
Data retrieved from NASA's ASRS site as of January 2009 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.