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An A320 at top of descent from FL350 experienced 2 compressor stalls as the throttles were closed. An emergency was declared but the engine continued to run.
| Attributes | |
| ACN | 725222 |
| Time | |
| Date | 200701 |
| Local Time Of Day | 1801 To 2400 |
| Place | |
| Locale Reference | airport : zzz.airport |
| State Reference | US |
| Altitude | msl single value : 35000 |
| Environment | |
| Flight Conditions | VMC |
| Aircraft 1 | |
| Controlling Facilities | artcc : zzz.artcc |
| Operator | common carrier : air carrier |
| Make Model Name | A320 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | descent : intermediate altitude |
| Route In Use | arrival star : n/s |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Experience | flight time last 90 days : 250 flight time total : 12000 flight time type : 3500 |
| ASRS Report | 725222 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Experience | flight time last 90 days : 210 flight time total : 17600 flight time type : 7600 |
| ASRS Report | 725226 |
| Events | |
| Anomaly | aircraft equipment problem : critical |
| Independent Detector | other flight crewa other flight crewb |
| Resolutory Action | flight crew : landed in emergency condition flight crew : declared emergency |
| Supplementary | |
| Problem Areas | Aircraft |
| Primary Problem | Aircraft |
Narrative:
Top of descent from FL350. Autothrottles and autoplt on. Autothrottles start to move to idle and #1 engine compressor stalls twice. Autoplt disconnected autothrottles disconnected. #1 engine ran fine at idle. N2 vibration above 5.0. Contacted dispatch and maintenance; declared emergency with ATC. Landing was uneventful. Emergency personnel noted no damage. Taxied to gate.
Original NASA ASRS Text
Title: AN A320 AT TOP OF DESCENT FROM FL350 EXPERIENCED 2 COMPRESSOR STALLS AS THE THROTTLES WERE CLOSED. AN EMERGENCY WAS DECLARED BUT THE ENG CONTINUED TO RUN.
Narrative: TOP OF DSCNT FROM FL350. AUTOTHROTTLES AND AUTOPLT ON. AUTOTHROTTLES START TO MOVE TO IDLE AND #1 ENG COMPRESSOR STALLS TWICE. AUTOPLT DISCONNECTED AUTOTHROTTLES DISCONNECTED. #1 ENG RAN FINE AT IDLE. N2 VIBRATION ABOVE 5.0. CONTACTED DISPATCH AND MAINT; DECLARED EMER WITH ATC. LNDG WAS UNEVENTFUL. EMER PERSONNEL NOTED NO DAMAGE. TAXIED TO GATE.
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.