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An air carrier MD80 flight crew climbs to optimum altitude then finds that the aircraft performance is insufficient to hold that altitude when they put the anti-ice on. The flight crew started down before they requested a descent due to both performance and engine compressor stall problems.
| Attributes | |
| ACN | 344190 |
| Time | |
| Date | 199608 |
| Day | Thu |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | atc facility : swl |
| State Reference | MD |
| Altitude | msl bound lower : 35000 msl bound upper : 35000 |
| Environment | |
| Flight Conditions | IMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : zdc tracon : den |
| Operator | common carrier : air carrier |
| Make Model Name | MD-80 Series (DC-9-80) Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | Other |
| Flight Phase | cruise other |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp pilot : commercial pilot : flight engineer |
| Experience | flight time last 90 days : 200 flight time total : 8000 |
| ASRS Report | 344190 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : instrument pilot : commercial |
| Events | |
| Anomaly | altitude deviation : excursion from assigned altitude inflight encounter : weather non adherence : clearance non adherence : far other anomaly other |
| Independent Detector | aircraft equipment other aircraft equipment : unspecified other flight crewa |
| Resolutory Action | controller : issued new clearance other other |
| Consequence | Other |
| Supplementary | |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation |
Narrative:
Climbed to FL350 at maximum weight for altitude. After level off required engine anti-ice. Could not hold speed and then had a compressor stall on the right engine, requested a lower altitude as descent was started. Should have requested a lower altitude as soon as airspeed started to decay.
Original NASA ASRS Text
Title: AN ACR MD80 FLC CLBS TO OPTIMUM ALT THEN FINDS THAT THE ACFT PERFORMANCE IS INSUFFICIENT TO HOLD THAT ALT WHEN THEY PUT THE ANTI-ICE ON. THE FLC STARTED DOWN BEFORE THEY REQUESTED A DSCNT DUE TO BOTH PERFORMANCE AND ENG COMPRESSOR STALL PROBS.
Narrative: CLBED TO FL350 AT MAX WT FOR ALT. AFTER LEVEL OFF REQUIRED ENG ANTI-ICE. COULD NOT HOLD SPD AND THEN HAD A COMPRESSOR STALL ON THE R ENG, REQUESTED A LOWER ALT AS DSCNT WAS STARTED. SHOULD HAVE REQUESTED A LOWER ALT AS SOON AS AIRSPD STARTED TO DECAY.
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.