While departing gate, jet blast from an large transport damaged the open cowling of a parked mdt.

Attributes
ACN	232509
Time
Date	199302
Day	Mon
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : tul
State Reference	OK
Altitude	agl bound lower : 0 agl bound upper : 0
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Operator	common carrier : air carrier
Make Model Name	Large Transport, Low Wing, 3 Turbojet Eng
Flight Phase	ground other : taxi
Flight Plan	IFR
Aircraft 2
Make Model Name	Medium Transport, Low Wing, 2 Turboprop Eng
Flight Phase	ground : parked
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : commercial pilot : atp pilot : instrument pilot : flight engineer
Experience	flight time last 90 days : 220 flight time total : 12000 flight time type : 8000
ASRS Report	232509
Person 2
Affiliation	company : air carrier
Function	flight crew : second officer
Qualification	pilot : instrument pilot : flight engineer pilot : commercial pilot : atp
Experience	flight time last 90 days : 240 flight time total : 6500 flight time type : 3200
ASRS Report	234227
Events
Anomaly	non adherence other
Independent Detector	other other : unspecified
Resolutory Action	none taken : detected after the fact
Consequence	other
Supplementary
Primary Problem	Airport
Air Traffic Incident	other
Situations
Airport	other physical facility

Narrative:

Did a pwrback from gate in tulsa, ok. All 3 engines were operating and aircraft was light weight, only approximately 132000 pounds. Did a right turn away from the gate (approximately 270 degree turn) to taxi for runway 36R. The turn was accomplished using minimum thrust, almost completely at idle, because we were light weight and all 3 engines were running. Takeoff and flight was normal. Upon arrival at destination we were informed that an mdt aircraft had been parked behind us in tulsa with its engine cowling open and that during the turn away from the gate we had damaged the cowling with our thrust. Corrective action recommended: do 1 of 2 things. 1) do not do pwrbacks from these gates when aircraft are parked in this location on the ramp, or 2) do not park aircraft with their cowling open behind jet aircraft or this situation will surely happen again.

Original NASA ASRS Text

Title: WHILE DEPARTING GATE, JET BLAST FROM AN LGT DAMAGED THE OPEN COWLING OF A PARKED MDT.

Narrative: DID A PWRBACK FROM GATE IN TULSA, OK. ALL 3 ENGS WERE OPERATING AND ACFT WAS LIGHT WT, ONLY APPROX 132000 LBS. DID A R TURN AWAY FROM THE GATE (APPROX 270 DEG TURN) TO TAXI FOR RWY 36R. THE TURN WAS ACCOMPLISHED USING MINIMUM THRUST, ALMOST COMPLETELY AT IDLE, BECAUSE WE WERE LIGHT WT AND ALL 3 ENGS WERE RUNNING. TKOF AND FLT WAS NORMAL. UPON ARR AT DEST WE WERE INFORMED THAT AN MDT ACFT HAD BEEN PARKED BEHIND US IN TULSA WITH ITS ENG COWLING OPEN AND THAT DURING THE TURN AWAY FROM THE GATE WE HAD DAMAGED THE COWLING WITH OUR THRUST. CORRECTIVE ACTION RECOMMENDED: DO 1 OF 2 THINGS. 1) DO NOT DO PWRBACKS FROM THESE GATES WHEN ACFT ARE PARKED IN THIS LOCATION ON THE RAMP, OR 2) DO NOT PARK ACFT WITH THEIR COWLING OPEN BEHIND JET ACFT OR THIS SIT WILL SURELY HAPPEN AGAIN.

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.