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Departure sequence switch caused widebody transport to move into takeoff position ahead of small aircraft twin. Twin caught jet blast from widebody transport. No damage.
| Attributes | |
| ACN | 175983 |
| Time | |
| Date | 199104 |
| Day | Sat |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | airport : mia |
| State Reference | FL |
| 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 | Widebody, Low Wing, 2 Turbojet Eng |
| Navigation In Use | Other Other |
| Flight Phase | ground : holding ground other : taxi |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 220 flight time total : 22000 |
| ASRS Report | 175983 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : commercial pilot : atp pilot : instrument |
| Experience | flight time last 90 days : 250 flight time total : 11000 |
| ASRS Report | 176059 |
| Events | |
| Anomaly | other anomaly other other anomaly other |
| Independent Detector | other flight crewa other other : unspecified |
| Resolutory Action | none taken : detected after the fact |
| Consequence | Other |
| Supplementary | |
| Primary Problem | Aircraft |
| Air Traffic Incident | other |
Narrative:
My assigned sequence for taxi and takeoff was to follow a twin small aircraft to 27R mia. (Ground delays were lengthy due to prior thunderstorms and landing traffic was also heavy.) while I was #2 for departure, behind and beside the small aircraft, tower suddenly cleared me for an immediate takeoff. This required some maneuvering to get by the small aircraft, who was unable to move much to his right, as requested by tower. In my 180 degree turn, I reduced my medium power to idle well before my tail was pointing to the small aircraft. But, when the small aircraft pilot called, 'easy, you almost flipped me,' I had that sinking feeling I should have declined my clearance for immediate positioning and takeoff. ATC controllers were ok worked the land/takeoff sequences very precisely. The small aircraft and I would have benefitted greatly if we had prior knowledge of our swap in departing sequence.
Original NASA ASRS Text
Title: DEP SEQUENCE SWITCH CAUSED WDB TO MOVE INTO TKOF POSITION AHEAD OF SMA TWIN. TWIN CAUGHT JET BLAST FROM WDB. NO DAMAGE.
Narrative: MY ASSIGNED SEQUENCE FOR TAXI AND TKOF WAS TO FOLLOW A TWIN SMA TO 27R MIA. (GND DELAYS WERE LENGTHY DUE TO PRIOR TSTMS AND LNDG TFC WAS ALSO HVY.) WHILE I WAS #2 FOR DEP, BEHIND AND BESIDE THE SMA, TWR SUDDENLY CLRED ME FOR AN IMMEDIATE TKOF. THIS REQUIRED SOME MANEUVERING TO GET BY THE SMA, WHO WAS UNABLE TO MOVE MUCH TO HIS RIGHT, AS REQUESTED BY TWR. IN MY 180 DEG TURN, I REDUCED MY MEDIUM PWR TO IDLE WELL BEFORE MY TAIL WAS POINTING TO THE SMA. BUT, WHEN THE SMA PLT CALLED, 'EASY, YOU ALMOST FLIPPED ME,' I HAD THAT SINKING FEELING I SHOULD HAVE DECLINED MY CLRNC FOR IMMEDIATE POSITIONING AND TKOF. ATC CTLRS WERE OK WORKED THE LAND/TKOF SEQUENCES VERY PRECISELY. THE SMA AND I WOULD HAVE BENEFITTED GREATLY IF WE HAD PRIOR KNOWLEDGE OF OUR SWAP IN DEPARTING SEQUENCE.
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.