Narrative:

We were sitting on the ramp; immediately adjacent to the [local] flight school. It was a cold; fairly low IFR day so we were expecting to enter icing conditions immediately after takeoff. With the brakes locked; we started to add power to test the anti-ice/deice systems. Then we realized we were still on a very tight ramp; with small fixed-wing aircraft on the ramp behind us parked with their tail to our tail. We brought the power back to idle; however the jet blast may have caused damage to one or more of the small trainer aircraft parked behind us. In the future; we will ensure there is nothing behind us when increasing power above idle; and we will be moving our operations at this airport to a location that is well separated from the flight school's fleet of trainer aircraft.

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Original NASA ASRS Text

Title: The pilot of a corporate jet reported an increase of engine thrust while on the ramp to test the anti-ice system; then recognized that light aircraft were located relatively close behind the aircraft.

Narrative: We were sitting on the ramp; immediately adjacent to the [local] flight school. It was a cold; fairly low IFR day so we were expecting to enter icing conditions immediately after takeoff. With the brakes locked; we started to add power to test the Anti-Ice/Deice Systems. Then we realized we were still on a very tight ramp; with small fixed-wing aircraft on the ramp behind us parked with their tail to our tail. We brought the power back to idle; however the jet blast may have caused damage to one or more of the small trainer aircraft parked behind us. In the future; we will ensure there is nothing behind us when increasing power above idle; and we will be moving our operations at this airport to a location that is well separated from the flight school's fleet of trainer aircraft.

Data retrieved from NASA's ASRS site 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.