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An MD88 was dispatched in non compliance with the tail compartment high temperature warning system inadvertently deferred. A no-go item.
| Attributes | |
| ACN | 458453 |
| Time | |
| Date | 199912 |
| Day | Wed |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | airport : zzz.airport |
| State Reference | US |
| Altitude | agl single value : 0 |
| Environment | |
| Light | Daylight |
| Aircraft 1 | |
| Operator | common carrier : air carrier |
| Make Model Name | MD-88 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | ground : parked ground : preflight |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | oversight : supervisor |
| Qualification | technician : powerplant technician : airframe |
| Experience | maintenance lead technician : 2 maintenance supervisor : 3 maintenance technician : 6 |
| ASRS Report | 458453 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Events | |
| Anomaly | aircraft equipment problem : critical maintenance problem : improper documentation maintenance problem : non compliance with mel non adherence : far non adherence : published procedure |
| Independent Detector | other flight crewa other flight crewb |
| 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 : fault isolation |
| Supplementary | |
| Problem Areas | Aircraft Maintenance Human Performance Flight Crew Human Performance |
| Primary Problem | Maintenance Human Performance |
Narrative:
On dec/xa/99 at around XA53, I took a radio call from aircraft xyz air carrier flight abc. The crew reported a problem with the air conditioning system. The pilot reported a tail temperature high light coming on engine operating annunciator panel. When he went to hp bleed off the light extinguished. I misunderstood him and thought that he had an air conditioning temperature high light on. I proceeded to place the item on mco and issued him a flight crew placard. I used MEL 21-00-02A which allowed him to operate pack with switch in the hp bleed off position. The aircraft flew XXX-vyv-ZZZ. In ZZZ there was a flight crew change. The new crew realized that the wrong MEL was used and contacted maintenance control center. In ZZZ the flight was canceled and mechanics were sent from vyv to repair the aircraft.
Original NASA ASRS Text
Title: AN MD88 WAS DISPATCHED IN NON COMPLIANCE WITH THE TAIL COMPARTMENT HIGH TEMP WARNING SYS INADVERTENTLY DEFERRED. A NO-GO ITEM.
Narrative: ON DEC/XA/99 AT AROUND XA53, I TOOK A RADIO CALL FROM ACFT XYZ ACR FLT ABC. THE CREW RPTED A PROB WITH THE AIR CONDITIONING SYS. THE PLT RPTED A TAIL TEMP HIGH LIGHT COMING ON ENG OPERATING ANNUNCIATOR PANEL. WHEN HE WENT TO HP BLEED OFF THE LIGHT EXTINGUISHED. I MISUNDERSTOOD HIM AND THOUGHT THAT HE HAD AN AIR CONDITIONING TEMP HIGH LIGHT ON. I PROCEEDED TO PLACE THE ITEM ON MCO AND ISSUED HIM A FLC PLACARD. I USED MEL 21-00-02A WHICH ALLOWED HIM TO OPERATE PACK WITH SWITCH IN THE HP BLEED OFF POS. THE ACFT FLEW XXX-VYV-ZZZ. IN ZZZ THERE WAS A FLC CHANGE. THE NEW CREW REALIZED THAT THE WRONG MEL WAS USED AND CONTACTED MAINT CTL CTR. IN ZZZ THE FLT WAS CANCELED AND MECHS WERE SENT FROM VYV TO REPAIR THE ACFT.
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.