|37000 Feet||Browse and search NASA's
Aviation Safety Reporting System
|Local Time Of Day||0601 To 1200|
|Locale Reference||airport : sjt|
|Altitude||agl bound lower : 1000|
agl bound upper : 1050
|Controlling Facilities||tower : sjt|
|Make Model Name||Small Aircraft, High Wing, 1 Eng, Fixed Gear|
|Flight Phase||cruise other|
|Make Model Name||Small Aircraft, Low Wing, 1 Eng, Retractable Gear|
|Flight Phase||climbout : takeoff|
climbout : intermediate altitude
|Affiliation||government : faa|
|Function||controller : local|
|Qualification||controller : non radar|
|Function||flight crew : single pilot|
|Anomaly||conflict : nmac|
non adherence : published procedure
|Independent Detector||other controllera|
|Resolutory Action||none taken : insufficient time|
|Consequence||faa : investigated|
|Miss Distance||horizontal : 300|
vertical : 50
|Primary Problem||Flight Crew Human Performance|
|Air Traffic Incident||Pilot Deviation|
Small aircraft X departed runway 18, in left closed traffic. Small aircraft Y was released next with 6000 ft runway separation. Then small aircraft Z was released behind Y with 6000 ft runway separation. Small aircraft Z made a steep left turn before mid field and rolled out in a steep nose up angle. I then told Z 'traffic 12 O'clock less than 1/2 mi (aircraft X) in left closed traffic runway 18'. Small aircraft Z said he saw small aircraft X and before I could give X the traffic small aircraft Z passed less than 300 ft behind and maybe 50 ft above X. Before I issued the takeoff clearance to small aircraft Z the pilot gave no indication of what he was going to do.
Original NASA ASRS Text
Title: NMAC BTWN 2 SMA ACFT IN TFC PATTERN. PLTDEV.
Narrative: SMA X DEPARTED RWY 18, IN L CLOSED TFC. SMA Y WAS RELEASED NEXT WITH 6000 FT RWY SEPARATION. THEN SMA Z WAS RELEASED BEHIND Y WITH 6000 FT RWY SEPARATION. SMA Z MADE A STEEP L TURN BEFORE MID FIELD AND ROLLED OUT IN A STEEP NOSE UP ANGLE. I THEN TOLD Z 'TFC 12 O'CLOCK LESS THAN 1/2 MI (ACFT X) IN L CLOSED TFC RWY 18'. SMA Z SAID HE SAW SMA X AND BEFORE I COULD GIVE X THE TFC SMA Z PASSED LESS THAN 300 FT BEHIND AND MAYBE 50 FT ABOVE X. BEFORE I ISSUED THE TKOF CLRNC TO SMA Z THE PLT GAVE NO INDICATION OF WHAT HE WAS GOING TO DO.
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.