A DC8-71 SUFFERS AN ENG COMPRESSOR STALL AT ROTATION DURING TKOF FROM ORD; RWY 32L. A LNDG ACFT ON AN INTERSECTING RWY HDG IS THOUGHT TO HAVE CREATED THE WAKE THAT CAUSED THE STALL.

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ON DEC/XA/98 I WAS THE FO ABOARD FLT OPERATING ORD-PDX. ON THIS NIGHT; ORD WAS RUNNING VISUAL APCHS TO RWYS 9L&R AND DEPS ON RWY 32L FROM INTXN T10. ATC CLRED US TO TAXI OUT TO RWY 32L TXWY T10 AND ONCE THERE; TWR TOOK US INTO POS AND HOLD. WE WERE NOT ADVISED OF AN ARR ON RWY 9L; BUT AS TWR CLRED US FOR TKOF WE NOTED AN ACFT LNDG ACROSS OUR RWY TOWARDS THE DEP END. WE PROCEEDED WITH THE TKOF. AT V1 THE ACFT BUFFETED SLIGHTLY; AND A LOUD BANG WAS NOTED (THE CAPT SAW A WHITE FLASH OUT OF HIS PERIPHERAL VISION). BY THE TIME THIS WAS NOTED WE WERE AT VR AND CONTINUED THE TKOF WITHOUT INCIDENT. ON CLBOUT WE DISCUSSED IF WE HAD A COMPRESSOR STALL INDUCED BY WAKE TURB FROM THE ARRIVING ACFT. THE ENGINEER HAD NOT NOTED ANY ENG ANOMALIES; BUT WE STILL BELIEVE THAT THE WAKE WHICH WOULD HAVE SETTLED AT APPROX OUR ROTATION POINT; DISTURBED THE AIR FLOW TO ONE OF THE ENGS AND TRIGGERED A MOMENTARY COMPRESSOR STALL. THIS SHOULD BE ANOTHER SIT CONSIDERED DURING SIMULTANEOUS RWY OPS. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO: RPTR PARTICIPATED IN WAKE TURB STRUCTURED CALLBACK PROGRAM. FLC SAW THE APCH ACFT CROSS THEIR INTENDED DEP PATH BUT DIDN'T FEEL IT WOULD PRESENT ANY PROB. THEIR ACFT ENCOUNTERED THE LNDG ACFT'S WAKE JUST AT THEIR ROTATION POINT. THEY WERE NOT AIRBORNE WHEN THEY HEARD A VERY LOUD BANG. THE CAPT SAW A FLASH OF LIGHT ON THE L SIDE OF THE ACFT. ALL FLC RECOGNIZED THE SOUND OF A COMPRESSOR STALL ON THE L SIDE OF THE ACFT. IF THEY WERE TO DO IT OVER AGAIN; RPTR SAID THEY WOULD WAIT 1 OR 2 MINS TO ASSURE CLRNC FROM WAKE OF LNDG ACFT BEFORE STARTING TKOF ROLL.