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Near midair collision between air carrier medium large transport departure runway 19R at sna, and small aircraft Y on go around from 19L.
| Attributes | |
| ACN | 160935 |
| Time | |
| Date | 199010 |
| Day | Thu |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | airport : sna |
| State Reference | CA |
| Altitude | agl bound lower : 100 agl bound upper : 400 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tower : sna |
| Operator | common carrier : air carrier |
| Make Model Name | Medium Large Transport |
| Flight Phase | climbout : intermediate altitude climbout : takeoff climbout : initial |
| Flight Plan | IFR |
| Aircraft 2 | |
| Make Model Name | Small Aircraft |
| Flight Phase | landing : go around |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : cfi pilot : atp pilot : flight engineer |
| Experience | flight time last 90 days : 120 flight time total : 9000 flight time type : 1800 |
| ASRS Report | 160935 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : commercial pilot : instrument |
| Events | |
| Anomaly | conflict : nmac non adherence : clearance |
| Independent Detector | other flight crewa |
| Resolutory Action | flight crew : took evasive action |
| Consequence | Other |
| Miss Distance | horizontal : 0 vertical : 200 |
| Supplementary | |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation |
Narrative:
During takeoff roll saw small aircraft Y at about 400' over center of runway. Normal rotation would have taken us right through it. Had to hold aircraft at 100' until past runway and small aircraft Y before climbing. Apparently small aircraft Y was a low approach or go around from parallel runway. Small aircraft Y had drifted over our runway. Parallel runway controled by different tower frequency. This is the second near hit I have had in about 1 yr at sna. Both caused by poor controling on separate frequencys and no coordination between the 2 lcls. (The other was tower giving a light aircraft a right turn right into us on departure.) in this case the controller working the small aircraft Y did not adequately monitor his flight path which strayed over our runway, and the controller working us did not ensure the airspace above our runway would be clear for our takeoff. Since we could not hear traffic on the other runway we were not aware of what was developing. Also, obviously the small aircraft Y should have cleared his runway to the other side.
Original NASA ASRS Text
Title: NMAC BETWEEN ACR MLG DEP RWY 19R AT SNA, AND SMA Y ON GO AROUND FROM 19L.
Narrative: DURING TKOF ROLL SAW SMA Y AT ABOUT 400' OVER CENTER OF RWY. NORMAL ROTATION WOULD HAVE TAKEN US RIGHT THROUGH IT. HAD TO HOLD ACFT AT 100' UNTIL PAST RWY AND SMA Y BEFORE CLBING. APPARENTLY SMA Y WAS A LOW APCH OR GAR FROM PARALLEL RWY. SMA Y HAD DRIFTED OVER OUR RWY. PARALLEL RWY CTLED BY DIFFERENT TWR FREQ. THIS IS THE SECOND NEAR HIT I HAVE HAD IN ABOUT 1 YR AT SNA. BOTH CAUSED BY POOR CTLING ON SEPARATE FREQS AND NO COORD BTWN THE 2 LCLS. (THE OTHER WAS TWR GIVING A LIGHT ACFT A RIGHT TURN RIGHT INTO US ON DEP.) IN THIS CASE THE CTLR WORKING THE SMA Y DID NOT ADEQUATELY MONITOR HIS FLT PATH WHICH STRAYED OVER OUR RWY, AND THE CTLR WORKING US DID NOT ENSURE THE AIRSPACE ABOVE OUR RWY WOULD BE CLR FOR OUR TKOF. SINCE WE COULD NOT HEAR TFC ON THE OTHER RWY WE WERE NOT AWARE OF WHAT WAS DEVELOPING. ALSO, OBVIOUSLY THE SMA Y SHOULD HAVE CLRED HIS RWY TO THE OTHER SIDE.
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.