37000 Feet | Browse and search NASA's Aviation Safety Reporting System |
|
Attributes | |
ACN | 162062 |
Time | |
Date | 199011 |
Day | Tue |
Local Time Of Day | 1201 To 1800 |
Place | |
Locale Reference | atc facility : abi |
State Reference | TX |
Altitude | msl bound lower : 4000 msl bound upper : 4000 |
Environment | |
Flight Conditions | VMC |
Light | Daylight |
Aircraft 1 | |
Controlling Facilities | tracon : abi |
Operator | other |
Make Model Name | Military Transport |
Flight Phase | cruise other |
Route In Use | enroute : on vectors |
Flight Plan | IFR |
Aircraft 2 | |
Operator | other |
Make Model Name | Military Transport |
Flight Phase | cruise other |
Route In Use | enroute : on vectors |
Flight Plan | IFR |
Person 1 | |
Affiliation | government : faa |
Function | controller : approach |
Qualification | controller : radar |
Experience | controller non radar : 4 controller radar : 2 |
ASRS Report | 162062 |
Person 2 | |
Affiliation | government : military |
Function | flight crew : captain oversight : pic |
Qualification | pilot : military |
Events | |
Anomaly | conflict : airborne less severe non adherence : published procedure non adherence : required legal separation |
Independent Detector | other flight crewa |
Resolutory Action | none taken : detected after the fact |
Consequence | faa : investigated |
Miss Distance | horizontal : 14400 vertical : 100 |
Supplementary | |
Primary Problem | ATC Human Performance |
Air Traffic Incident | Operational Error |
Narrative:
I was working radar west. A flight check was in progress. During the time of the incident I had 4 bmb's, 1 fgt, 1 mlt and 3 small aircraft's. The incident occurred between bmb X and bmb Y, about 8 mi west of dys abf with bmb X on radar downwind heading 340 degrees at 4000' MSL, and bmb Y heading 270 degrees at 4000' MSL (at the time I didn't see his mode C and I didn't know who he was). I was very busy with coordination and traffic vol. Bmb X called around 6 mi from dys, I squawked him and idented him, then turned bmb X right 340 degrees, climb to 4000', gave him a local IFR clearance and told him this would be a TACAN to runway 16. More coordination took place between aircraft and facs. I called traffic to bmb X, '12 O'clock, 2 mi, crossing right to left, type and altitude unknown, fast moving.' bmb X replied, 'tally, it's a bmb.' I had not seen bmb Y until then. I called bmb Y and told him to squawk, idented him thinking he was VFR, and then turned him to reenter the radar pattern. I had thought nothing more of this and continued to work until relieved 26 hours later. Bmb X had filed a hatr. At the time of the hatr I found out that bmb Y was actually IFR. Callback conversation with reporter revealed the following: reporter stated 'hatr' is a military hazardous air traffic report. Less than standard separation was 2.4 mi horizontal and 100' vertical. Reporter experience: 2 yrs radar, 4 yrs non radar.
Original NASA ASRS Text
Title: BMB X HAD LESS THAN STANDARD SEPARATION FROM BMB Y. SYSTEM ERROR.
Narrative: I WAS WORKING RADAR W. A FLT CHK WAS IN PROGRESS. DURING THE TIME OF THE INCIDENT I HAD 4 BMB'S, 1 FGT, 1 MLT AND 3 SMA'S. THE INCIDENT OCCURRED BTWN BMB X AND BMB Y, ABOUT 8 MI W OF DYS ABF WITH BMB X ON RADAR DOWNWIND HDG 340 DEGS AT 4000' MSL, AND BMB Y HDG 270 DEGS AT 4000' MSL (AT THE TIME I DIDN'T SEE HIS MODE C AND I DIDN'T KNOW WHO HE WAS). I WAS VERY BUSY WITH COORD AND TFC VOL. BMB X CALLED AROUND 6 MI FROM DYS, I SQUAWKED HIM AND IDENTED HIM, THEN TURNED BMB X RIGHT 340 DEGS, CLB TO 4000', GAVE HIM A LCL IFR CLRNC AND TOLD HIM THIS WOULD BE A TACAN TO RWY 16. MORE COORD TOOK PLACE BTWN ACFT AND FACS. I CALLED TFC TO BMB X, '12 O'CLOCK, 2 MI, XING RIGHT TO LEFT, TYPE AND ALT UNKNOWN, FAST MOVING.' BMB X REPLIED, 'TALLY, IT'S A BMB.' I HAD NOT SEEN BMB Y UNTIL THEN. I CALLED BMB Y AND TOLD HIM TO SQUAWK, IDENTED HIM THINKING HE WAS VFR, AND THEN TURNED HIM TO REENTER THE RADAR PATTERN. I HAD THOUGHT NOTHING MORE OF THIS AND CONTINUED TO WORK UNTIL RELIEVED 26 HRS LATER. BMB X HAD FILED A HATR. AT THE TIME OF THE HATR I FOUND OUT THAT BMB Y WAS ACTUALLY IFR. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING: RPTR STATED 'HATR' IS A MIL HAZARDOUS AIR TFC RPT. LTSS WAS 2.4 MI HORIZ AND 100' VERT. RPTR EXPERIENCE: 2 YRS RADAR, 4 YRS NON RADAR.
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.