 |
37000 Feet | Browse and search NASA's Aviation Safety Reporting System |
|
Air carrier X TCASII RA climb had near midair collision less than standard separation from medium large transport. Evasive action taken. System error.
| Attributes | |
| ACN | 221852 |
| Time | |
| Date | 199209 |
| Day | Wed |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | atc facility : rjty |
| State Reference | FO |
| Altitude | msl bound lower : 4000 msl bound upper : 4000 |
| Environment | |
| Flight Conditions | Marginal |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : rjty |
| Operator | common carrier : air carrier |
| Make Model Name | Widebody, Low Wing, 4 Turbojet Eng |
| Navigation In Use | Other Other |
| Flight Phase | cruise other |
| Route In Use | enroute : on vectors |
| Flight Plan | IFR |
| Aircraft 2 | |
| Operator | common carrier : air carrier |
| Make Model Name | Medium Large Transport, Low Wing, 2 Turbojet Eng |
| Flight Phase | climbout : intermediate altitude |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 140 flight time total : 14000 |
| ASRS Report | 221852 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : atp |
| Events | |
| Anomaly | conflict : airborne less severe conflict : nmac non adherence : required legal separation other anomaly other |
| Independent Detector | aircraft equipment other aircraft equipment : unspecified |
| Resolutory Action | flight crew : took evasive action |
| Consequence | Other |
| Miss Distance | horizontal : 0 vertical : 400 |
| Supplementary | |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | Operational Error |
Narrative:
Air carrier X on a base leg for a PAR approach to yokota AFB, we noticed traffic on our TCASII instrument at the 10:30 position, climbing into us. We took evasive action by pulling up to approximately 4400 ft after the TCASII warning to 'pull up.' we were not warned of the impending collision by the approach controller at yokota AFB. I asked him why he didn't, he said 'it was a pop-up,' then handed us off to the final controller and we landed on runway 18. One of the passenger told me that he saw an medium large transport coming at us. It shouldn't have been a so-called 'pop-up.'
Original NASA ASRS Text
Title: ACR X TCASII RA CLB HAD NMAC LTSS FROM MLG. EVASIVE ACTION TAKEN. SYS ERROR.
Narrative: ACR X ON A BASE LEG FOR A PAR APCH TO YOKOTA AFB, WE NOTICED TFC ON OUR TCASII INST AT THE 10:30 POS, CLBING INTO US. WE TOOK EVASIVE ACTION BY PULLING UP TO APPROX 4400 FT AFTER THE TCASII WARNING TO 'PULL UP.' WE WERE NOT WARNED OF THE IMPENDING COLLISION BY THE APCH CTLR AT YOKOTA AFB. I ASKED HIM WHY HE DIDN'T, HE SAID 'IT WAS A POP-UP,' THEN HANDED US OFF TO THE FINAL CTLR AND WE LANDED ON RWY 18. ONE OF THE PAX TOLD ME THAT HE SAW AN MLG COMING AT US. IT SHOULDN'T HAVE BEEN A SO-CALLED 'POP-UP.'
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.