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2 aircraft perform a simultaneous takeoff from udd, ca. The problem being, in opposite directions at the same time.
| Attributes | |
| ACN | 438326 |
| Time | |
| Date | 199905 |
| Day | Mon |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | airport : udd.airport |
| State Reference | CA |
| Altitude | agl single value : 100 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Operator | general aviation : personal |
| Make Model Name | Any Unknown or Unlisted Aircraft Manufacturer |
| Operating Under FAR Part | Part 91 |
| Flight Phase | climbout : takeoff climbout : initial ground : takeoff roll ground : taxi |
| Route In Use | departure : vfr |
| Flight Plan | VFR |
| Aircraft 2 | |
| Make Model Name | Chancellor 414A & C414 |
| Operating Under FAR Part | Part 91 |
| Flight Phase | climbout : initial climbout : takeoff ground : taxi ground : takeoff roll |
| Route In Use | departure : vfr |
| Person 1 | |
| Affiliation | other |
| Function | flight crew : single pilot |
| Qualification | pilot : private pilot : multi engine pilot : instrument |
| Experience | flight time last 90 days : 60 flight time total : 4500 flight time type : 400 |
| ASRS Report | 438326 |
| Person 2 | |
| Function | flight crew : single pilot |
| Qualification | pilot : multi engine pilot : private |
| Events | |
| Anomaly | aircraft equipment problem : less severe conflict : nmac incursion : runway non adherence : far non adherence : published procedure non adherence : required legal separation other anomaly other other spatial deviation |
| Independent Detector | other flight crewa other flight crewb |
| Resolutory Action | flight crew : took evasive action |
| Miss Distance | horizontal : 150 vertical : 100 |
| Supplementary | |
| Problem Areas | Aircraft Flight Crew Human Performance Airport |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation |
Narrative:
What really caused the problem was lack of communication. Runway at bermuda in use was runway 10. Light traffic was using runway 10, however, the wind was such that either runway 10 or runway 28 would work. I taxied out calling for departure on runway 10. Next transmission was going into position on runway 10 departing downwind. Prior to my moving into position, I heard 2 calls -- maybe 3, but it was carrier signal only. I announced saying 'carrier only.' I rolled on takeoff, hearing no further xmissions. Next I see a twin rolling at me from opposite direction. The twin rotated, turned to his left. I was about 50 ft altitude also then turned slightly to left, and we passed. The twin could have been a C421 or C414 -- really don't know. Maybe totally different, but a fairly large twin. I heard nothing from the aircraft after takeoff. I assume the twin had a bad transmitter, because there was no other traffic in the pattern or in vicinity. Prior to takeoff, the only xmissions I heard were the carrier signals.
Original NASA ASRS Text
Title: 2 ACFT PERFORM A SIMULTANEOUS TKOF FROM UDD, CA. THE PROB BEING, IN OPPOSITE DIRECTIONS AT THE SAME TIME.
Narrative: WHAT REALLY CAUSED THE PROB WAS LACK OF COM. RWY AT BERMUDA IN USE WAS RWY 10. LIGHT TFC WAS USING RWY 10, HOWEVER, THE WIND WAS SUCH THAT EITHER RWY 10 OR RWY 28 WOULD WORK. I TAXIED OUT CALLING FOR DEP ON RWY 10. NEXT XMISSION WAS GOING INTO POS ON RWY 10 DEPARTING DOWNWIND. PRIOR TO MY MOVING INTO POS, I HEARD 2 CALLS -- MAYBE 3, BUT IT WAS CARRIER SIGNAL ONLY. I ANNOUNCED SAYING 'CARRIER ONLY.' I ROLLED ON TKOF, HEARING NO FURTHER XMISSIONS. NEXT I SEE A TWIN ROLLING AT ME FROM OPPOSITE DIRECTION. THE TWIN ROTATED, TURNED TO HIS L. I WAS ABOUT 50 FT ALT ALSO THEN TURNED SLIGHTLY TO L, AND WE PASSED. THE TWIN COULD HAVE BEEN A C421 OR C414 -- REALLY DON'T KNOW. MAYBE TOTALLY DIFFERENT, BUT A FAIRLY LARGE TWIN. I HEARD NOTHING FROM THE ACFT AFTER TKOF. I ASSUME THE TWIN HAD A BAD XMITTER, BECAUSE THERE WAS NO OTHER TFC IN THE PATTERN OR IN VICINITY. PRIOR TO TKOF, THE ONLY XMISSIONS I HEARD WERE THE CARRIER SIGNALS.
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.