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|
Attributes | |
ACN | 461709 |
Time | |
Date | 200001 |
Day | Tue |
Local Time Of Day | 0601 To 1200 |
Place | |
Locale Reference | airport : ewr.airport |
State Reference | NJ |
Altitude | agl single value : 0 |
Environment | |
Weather Elements | Snow Windshear |
Light | Daylight |
Aircraft 1 | |
Controlling Facilities | tower : ewr.tower |
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 | ground : takeoff roll |
Flight Plan | IFR |
Person 1 | |
Affiliation | company : air carrier |
Function | flight crew : captain oversight : pic |
Qualification | pilot : flight engineer pilot : multi engine pilot : instrument pilot : commercial pilot : atp |
Experience | flight time last 90 days : 300 flight time total : 15000 flight time type : 5000 |
ASRS Report | 461709 |
Person 2 | |
Affiliation | company : air carrier |
Function | flight crew : first officer |
Qualification | pilot : multi engine pilot : commercial pilot : instrument |
Events | |
Anomaly | aircraft equipment problem : critical other anomaly other |
Independent Detector | aircraft equipment other aircraft equipment : master caution light other other : 3 |
Resolutory Action | aircraft : equipment problem dissipated |
Consequence | other |
Supplementary | |
Problem Areas | Aircraft Flight Crew Human Performance |
Primary Problem | Aircraft |
Narrative:
Right at rotation on takeoff, we noticed a slight hesitation of the aircraft and a blink of the master caution light. Our initial thought was that the aircraft had been buffeted by the strong gusting winds that were present during takeoff. Takeoff and climb out were uneventful. Seatbelt sign was turned off and the flight attendant from the rear came forward and asked if that was a compressor stall on takeoff. She said it was a loud (but not extremely loud or explosive) noise from both engines during rotation. The engine's instruments were checked again and were normal. The engines ran smoothly during acceleration and deceleration and at steady state with no abnormal engine instrument indications. Not hearing the noise from the cockpit we surmised we may have had a light to moderate compressor stall on both engines. Since the flight handbook classified a compressor stall as an additional procedure which is defined as a minor problem and that the engines were operating normally, we continued to st louis and landed. Callback conversation with reporter revealed the following information: the reporter stated the engine's momentary stall was not noticeable in the cockpit and the apparent buffet was attributed to a crosswind gust. The reporter said the flight attendant sitting on the right aft seat related the stall was from the left engine and the flight attendant sitting on the left aft seat stated the stall was from the right engine. The reporter said the MD80 engines could possibly have been affected by the crosswind gusts and the compressor condition that was discovered on trip termination. The reporter stated at trip termination the aircraft was removed from service and the engines were inspected revealing compressor damage. The reporter said maintenance determined the damage was caused by ingestion of pea gravel on a previous flight.
Original NASA ASRS Text
Title: AN MD80 ON TKOF AT ROTATION WITH HVY XWIND GUSTS EXPERIENCED BOTH ENGS COMPRESSOR STALL, LATER DETERMINED TO BE CAUSED BY COMPRESSOR DETERIORATION.
Narrative: RIGHT AT ROTATION ON TKOF, WE NOTICED A SLIGHT HESITATION OF THE ACFT AND A BLINK OF THE MASTER CAUTION LIGHT. OUR INITIAL THOUGHT WAS THAT THE ACFT HAD BEEN BUFFETED BY THE STRONG GUSTING WINDS THAT WERE PRESENT DURING TKOF. TKOF AND CLBOUT WERE UNEVENTFUL. SEATBELT SIGN WAS TURNED OFF AND THE FLT ATTENDANT FROM THE REAR CAME FORWARD AND ASKED IF THAT WAS A COMPRESSOR STALL ON TKOF. SHE SAID IT WAS A LOUD (BUT NOT EXTREMELY LOUD OR EXPLOSIVE) NOISE FROM BOTH ENGS DURING ROTATION. THE ENG'S INSTS WERE CHKED AGAIN AND WERE NORMAL. THE ENGS RAN SMOOTHLY DURING ACCELERATION AND DECELERATION AND AT STEADY STATE WITH NO ABNORMAL ENG INST INDICATIONS. NOT HEARING THE NOISE FROM THE COCKPIT WE SURMISED WE MAY HAVE HAD A LIGHT TO MODERATE COMPRESSOR STALL ON BOTH ENGS. SINCE THE FLT HANDBOOK CLASSIFIED A COMPRESSOR STALL AS AN ADDITIONAL PROC WHICH IS DEFINED AS A MINOR PROB AND THAT THE ENGS WERE OPERATING NORMALLY, WE CONTINUED TO ST LOUIS AND LANDED. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO: THE RPTR STATED THE ENG'S MOMENTARY STALL WAS NOT NOTICEABLE IN THE COCKPIT AND THE APPARENT BUFFET WAS ATTRIBUTED TO A XWIND GUST. THE RPTR SAID THE FLT ATTENDANT SITTING ON THE R AFT SEAT RELATED THE STALL WAS FROM THE L ENG AND THE FLT ATTENDANT SITTING ON THE L AFT SEAT STATED THE STALL WAS FROM THE R ENG. THE RPTR SAID THE MD80 ENGS COULD POSSIBLY HAVE BEEN AFFECTED BY THE XWIND GUSTS AND THE COMPRESSOR CONDITION THAT WAS DISCOVERED ON TRIP TERMINATION. THE RPTR STATED AT TRIP TERMINATION THE ACFT WAS REMOVED FROM SVC AND THE ENGS WERE INSPECTED REVEALING COMPRESSOR DAMAGE. THE RPTR SAID MAINT DETERMINED THE DAMAGE WAS CAUSED BY INGESTION OF PEA GRAVEL ON A PREVIOUS FLT.
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.