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While in position for takeoff runway 14 at an uncontrolled airport reporter aircraft observed a second aircraft taxi onto and depart runway 32 passing overhead reporter aircraft.
| Attributes | |
| ACN | 113810 |
| Time | |
| Date | 198906 |
| Day | Wed |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | airport : sts |
| State Reference | CA |
| 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 | Small Transport, Low Wing, 2 Turboprop Eng |
| Flight Phase | climbout : takeoff ground : holding |
| Flight Plan | None |
| Aircraft 2 | |
| Make Model Name | Small Aircraft |
| Flight Phase | climbout : initial climbout : takeoff |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 150 flight time total : 5200 flight time type : 2300 |
| ASRS Report | 113810 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : instrument pilot : commercial |
| Events | |
| Anomaly | conflict : ground less severe incursion : runway non adherence : far |
| Independent Detector | other flight crewa |
| Resolutory Action | none taken : unable |
| Consequence | Other |
| Miss Distance | vertical : 200 |
| Supplementary | |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation |
Narrative:
Taxied into position for takeoff on runway 14 at sonoma county (sts). WX was clear, unlimited visibility and winds calm. Announced our intentions to taxi into position on CTAF, 118.50. While preparing for takeoff, a single engine, low wing aircraft taxied into position for takeoff on runway 32. Another radio call was made that we were in position and preparing to take off on 14. Without making any radio calls that we heard, the single engine aircraft took off and climbed directly over head. A tower operator was present in the tower, even though it was not officially open. He confirmed the situation. Operator of single engine aircraft did not appear to be monitoring radios and was not aware of other activities going on around the airport.
Original NASA ASRS Text
Title: WHILE IN POSITION FOR TKOF RWY 14 AT AN UNCONTROLLED ARPT REPORTER ACFT OBSERVED A SECOND ACFT TAXI ONTO AND DEPART RWY 32 PASSING OVERHEAD REPORTER ACFT.
Narrative: TAXIED INTO POSITION FOR TKOF ON RWY 14 AT SONOMA COUNTY (STS). WX WAS CLEAR, UNLIMITED VISIBILITY AND WINDS CALM. ANNOUNCED OUR INTENTIONS TO TAXI INTO POSITION ON CTAF, 118.50. WHILE PREPARING FOR TKOF, A SINGLE ENGINE, LOW WING ACFT TAXIED INTO POSITION FOR TKOF ON RWY 32. ANOTHER RADIO CALL WAS MADE THAT WE WERE IN POSITION AND PREPARING TO TAKE OFF ON 14. WITHOUT MAKING ANY RADIO CALLS THAT WE HEARD, THE SINGLE ENGINE ACFT TOOK OFF AND CLIMBED DIRECTLY OVER HEAD. A TWR OPERATOR WAS PRESENT IN THE TWR, EVEN THOUGH IT WAS NOT OFFICIALLY OPEN. HE CONFIRMED THE SITUATION. OPERATOR OF SINGLE ENGINE ACFT DID NOT APPEAR TO BE MONITORING RADIOS AND WAS NOT AWARE OF OTHER ACTIVITIES GOING ON AROUND THE ARPT.
Data retrieved from NASA's ASRS site as of August 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.