Narrative:

The aircraft remained overnight in freezing rain and snow. When flight crew reported, the aircraft was covered with approximately 2 inches of ice and snow on entire airframe. Crew notified ground personnel that de-ice would be necessary. De-ice was performed. Pushed back from gate in WX with only very light rain and a temperature of 35 degrees reported on ATIS. Following de-ice, ground crew reported the aircraft to be free of ice and snow. Taxi was accomplished with flaps up with 3 inches of slush on the ramp area -- txwys were relatively clear with approximately 1/4 inches of snow. Near the runway, the first officer went back and checked the wings and engine nacelles from the cabin area -- all were clean. Takeoff was commenced approximately 2-4 mins later. Upon slat retract, a mild compressor stall was felt on the left engine, with a large compressor stall on the right engine, occurring simultaneously. The engine instrument showed a drop to approximately 1.5 EPR on the right engine. -- The engine instruments then stabilized with no surging and power matched up. A request to return to the airport resulted in vectors for an ILS approach -- landing opposite direction of takeoff with calm winds. The ILS was flown with both engines operating normally -- landing uneventful. Upon inspection of both engines on ground, they both showed substantial damage due to foreign object damage. An inspection of the airframe showed it to be clean -- except for the wing root area, which still had an accumulation of 1 inch thick ice in a narrow strip right next to fuselage. This made it impossible to see from inside the aircraft. Asking questions revealed that the individual doing the deicing was temporary help and was trained but had very little experience. It was also noted the de-ice bucket was kept low during spray and may have resulted in his not seeing the area.

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Original NASA ASRS Text

Title: FLC OF AN MLG ACR ACFT RETURNED AND LANDED SHORTLY AFTER TKOF DUE TO BOTH ENGS HAVING MOMENTARY COMPRESSOR STALLS DUE TO ICE INGESTION AFTER RAISING THE SLATS.

Narrative: THE ACFT REMAINED OVERNIGHT IN FREEZING RAIN AND SNOW. WHEN FLC RPTED, THE ACFT WAS COVERED WITH APPROX 2 INCHES OF ICE AND SNOW ON ENTIRE AIRFRAME. CREW NOTIFIED GND PERSONNEL THAT DE-ICE WOULD BE NECESSARY. DE-ICE WAS PERFORMED. PUSHED BACK FROM GATE IN WX WITH ONLY VERY LIGHT RAIN AND A TEMP OF 35 DEGS RPTED ON ATIS. FOLLOWING DE-ICE, GND CREW RPTED THE ACFT TO BE FREE OF ICE AND SNOW. TAXI WAS ACCOMPLISHED WITH FLAPS UP WITH 3 INCHES OF SLUSH ON THE RAMP AREA -- TXWYS WERE RELATIVELY CLR WITH APPROX 1/4 INCHES OF SNOW. NEAR THE RWY, THE FO WENT BACK AND CHKED THE WINGS AND ENG NACELLES FROM THE CABIN AREA -- ALL WERE CLEAN. TKOF WAS COMMENCED APPROX 2-4 MINS LATER. UPON SLAT RETRACT, A MILD COMPRESSOR STALL WAS FELT ON THE L ENG, WITH A LARGE COMPRESSOR STALL ON THE R ENG, OCCURRING SIMULTANEOUSLY. THE ENG INST SHOWED A DROP TO APPROX 1.5 EPR ON THE R ENG. -- THE ENG INSTS THEN STABILIZED WITH NO SURGING AND PWR MATCHED UP. A REQUEST TO RETURN TO THE ARPT RESULTED IN VECTORS FOR AN ILS APCH -- LNDG OPPOSITE DIRECTION OF TKOF WITH CALM WINDS. THE ILS WAS FLOWN WITH BOTH ENGS OPERATING NORMALLY -- LNDG UNEVENTFUL. UPON INSPECTION OF BOTH ENGS ON GND, THEY BOTH SHOWED SUBSTANTIAL DAMAGE DUE TO FOREIGN OBJECT DAMAGE. AN INSPECTION OF THE AIRFRAME SHOWED IT TO BE CLEAN -- EXCEPT FOR THE WING ROOT AREA, WHICH STILL HAD AN ACCUMULATION OF 1 INCH THICK ICE IN A NARROW STRIP RIGHT NEXT TO FUSELAGE. THIS MADE IT IMPOSSIBLE TO SEE FROM INSIDE THE ACFT. ASKING QUESTIONS REVEALED THAT THE INDIVIDUAL DOING THE DEICING WAS TEMPORARY HELP AND WAS TRAINED BUT HAD VERY LITTLE EXPERIENCE. IT WAS ALSO NOTED THE DE-ICE BUCKET WAS KEPT LOW DURING SPRAY AND MAY HAVE RESULTED IN HIS NOT SEEING THE AREA.

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.