Narrative:

When beginning to taxi out of the ramp area at mci, I noticed that quite a bit of thrust was required to break away. For 1 moment, I thought the chocks had not been removed. The aircraft finally started to roll and I reduced the thrust. Slightly more than idle thrust was required to keep the aircraft moving throughout approximately a 140 degree min radius right turn. Even more thrust was required as I straightened out the aircraft, received a normal salute off and began to taxi up the incline of the ramp to taxiway B. During the turn and while taxiing up the ramp, the jet blast is pointed directly at the building. We later found out that the jet blast had blown in a large aluminum rolling garage type door. Some of the contributing factors, I believe to have played a part in this incident are: a relatively high temperature of 87 degree F. Aircraft positioning in relation to building and other aircraft. A weight of 143700 pounds. The requirement for a 140 degree min radius turn. The steep incline of the ramp. Poor marshalling. In the past, have pushed their aircraft out, probably to prevent this situation from occurring. There have also been other jet blast incidents on this same ramp, I believe this ramp is not conducive to taxi out operations under all conditions if nothing is changed. I suggest possibly a change in aircraft positioning, that would give more forward motion before a turn. This would allow for more momentum to carry the aircraft through the turn at idle thrust. Another solution might be to change aircraft position so that only a 90 degree turn is necessary.

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Original NASA ASRS Text

Title: JET BLAST FROM 3 ENGINE LGT DEPARTING RAMP BLEW IN BUILDING DOOR.

Narrative: WHEN BEGINNING TO TAXI OUT OF THE RAMP AREA AT MCI, I NOTICED THAT QUITE A BIT OF THRUST WAS REQUIRED TO BREAK AWAY. FOR 1 MOMENT, I THOUGHT THE CHOCKS HAD NOT BEEN REMOVED. THE ACFT FINALLY STARTED TO ROLL AND I REDUCED THE THRUST. SLIGHTLY MORE THAN IDLE THRUST WAS REQUIRED TO KEEP THE ACFT MOVING THROUGHOUT APPROX A 140 DEG MIN RADIUS R TURN. EVEN MORE THRUST WAS REQUIRED AS I STRAIGHTENED OUT THE ACFT, RECEIVED A NORMAL SALUTE OFF AND BEGAN TO TAXI UP THE INCLINE OF THE RAMP TO TAXIWAY B. DURING THE TURN AND WHILE TAXIING UP THE RAMP, THE JET BLAST IS POINTED DIRECTLY AT THE BUILDING. WE LATER FOUND OUT THAT THE JET BLAST HAD BLOWN IN A LARGE ALUMINUM ROLLING GARAGE TYPE DOOR. SOME OF THE CONTRIBUTING FACTORS, I BELIEVE TO HAVE PLAYED A PART IN THIS INCIDENT ARE: A RELATIVELY HIGH TEMP OF 87 DEG F. ACFT POSITIONING IN RELATION TO BUILDING AND OTHER ACFT. A WEIGHT OF 143700 POUNDS. THE REQUIREMENT FOR A 140 DEG MIN RADIUS TURN. THE STEEP INCLINE OF THE RAMP. POOR MARSHALLING. IN THE PAST, HAVE PUSHED THEIR ACFT OUT, PROBABLY TO PREVENT THIS SITUATION FROM OCCURRING. THERE HAVE ALSO BEEN OTHER JET BLAST INCIDENTS ON THIS SAME RAMP, I BELIEVE THIS RAMP IS NOT CONDUCIVE TO TAXI OUT OPERATIONS UNDER ALL CONDITIONS IF NOTHING IS CHANGED. I SUGGEST POSSIBLY A CHANGE IN ACFT POSITIONING, THAT WOULD GIVE MORE FORWARD MOTION BEFORE A TURN. THIS WOULD ALLOW FOR MORE MOMENTUM TO CARRY THE ACFT THROUGH THE TURN AT IDLE THRUST. ANOTHER SOLUTION MIGHT BE TO CHANGE ACFT POS SO THAT ONLY A 90 DEG TURN IS NECESSARY.

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.