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37000 Feet | Browse and search NASA's Aviation Safety Reporting System |
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Air carrier experiences vibration, reduces power and continues to landing. Suspects repeat of previously reported air conditioning duct problem.
| Attributes | |
| ACN | 450141 |
| Time | |
| Date | 199909 |
| Day | Sat |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | airport : sat.airport |
| State Reference | TX |
| Altitude | msl single value : 27000 |
| Aircraft 1 | |
| Controlling Facilities | artcc : zhu.artcc tracon : k90.tracon |
| Operator | common carrier : air carrier |
| Make Model Name | MD-80 Super 80 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | descent : intermediate altitude |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp pilot : multi engine |
| ASRS Report | 450141 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : instrument pilot : commercial pilot : multi engine |
| Events | |
| Anomaly | aircraft equipment problem : critical |
| Independent Detector | other flight crewa other flight crewb |
| Resolutory Action | flight crew : landed as precaution flight crew : overcame equipment problem |
| Consequence | other |
| Factors | |
| Maintenance | performance deficiency : inspection performance deficiency : repair performance deficiency : fault isolation |
| Supplementary | |
| Problem Areas | Aircraft Maintenance Human Performance |
| Primary Problem | Aircraft |
Narrative:
Vibration on arrival written up by previous crew. Maintenance found pack ducting blown out and clamp broken. Aircraft returned to service. Passing through FL270 into sat, left engine began serious vibration. Flight attendants confirmed loud noise and vibration in tail section. Asked for priority landing to avoid an extended downwind. Engine left at idle until landing. Did not declare emergency.
Original NASA ASRS Text
Title: ACR EXPERIENCES VIBRATION, REDUCES PWR AND CONTINUES TO LNDG. SUSPECTS REPEAT OF PREVIOUSLY RPTED AIR CONDITIONING DUCT PROB.
Narrative: VIBRATION ON ARR WRITTEN UP BY PREVIOUS CREW. MAINT FOUND PACK DUCTING BLOWN OUT AND CLAMP BROKEN. ACFT RETURNED TO SVC. PASSING THROUGH FL270 INTO SAT, L ENG BEGAN SERIOUS VIBRATION. FLT ATTENDANTS CONFIRMED LOUD NOISE AND VIBRATION IN TAIL SECTION. ASKED FOR PRIORITY LNDG TO AVOID AN EXTENDED DOWNWIND. ENG LEFT AT IDLE UNTIL LNDG. DID NOT DECLARE EMER.
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.