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Air carrier X had near midair collision less than standard separation from small aircraft Y. Evasive action taken. System error.
| Attributes | |
| ACN | 192079 |
| Time | |
| Date | 199110 |
| Day | Mon |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | atc facility : sat |
| State Reference | TX |
| Altitude | msl bound lower : 2200 msl bound upper : 2500 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : sat artcc : zma |
| Operator | common carrier : air carrier |
| Make Model Name | Large Transport, Low Wing, 2 Turbojet Eng |
| Flight Phase | descent : approach |
| Route In Use | approach : visual |
| Flight Plan | IFR |
| Aircraft 2 | |
| Operator | general aviation : personal |
| Make Model Name | Small Aircraft, High Wing, 1 Eng, Fixed Gear |
| Flight Phase | descent : approach |
| Route In Use | enroute : on vectors |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 70 flight time total : 13000 flight time type : 7000 |
| ASRS Report | 192079 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : atp |
| Events | |
| Anomaly | conflict : nmac non adherence : required legal separation non adherence : published procedure |
| Independent Detector | other flight crewa |
| Resolutory Action | flight crew : took evasive action |
| Consequence | faa : reviewed incident with flight crew |
| Miss Distance | horizontal : 0 vertical : 300 |
| Supplementary | |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | Operational Error |
Narrative:
Air carrier X after being cleared for a right base visual to runway 3 at sat (and within the air traffic area) the copilot saw a blue and white small aircraft pass underneath us (approximately 300 ft below), right to left. Queried tower for information. Tower said, 'just advised of small aircraft at 2200 ft.' we were passing through 2500 ft. Talked with approach after landing. Approach said small aircraft Y was on a vector for sat. We were never advised of this traffic. Had we rapidly descended in our turn, this may have been a different story. No TCASII on board. Evasive action: momentary level off; precautionary.
Original NASA ASRS Text
Title: ACR X HAD NMAC LTSS FROM SMA Y. EVASIVE ACTION TAKEN. SYS ERROR.
Narrative: ACR X AFTER BEING CLRED FOR A R BASE VISUAL TO RWY 3 AT SAT (AND WITHIN THE ATA) THE COPLT SAW A BLUE AND WHITE SMA PASS UNDERNEATH US (APPROX 300 FT BELOW), R TO L. QUERIED TWR FOR INFO. TWR SAID, 'JUST ADVISED OF SMA AT 2200 FT.' WE WERE PASSING THROUGH 2500 FT. TALKED WITH APCH AFTER LNDG. APCH SAID SMA Y WAS ON A VECTOR FOR SAT. WE WERE NEVER ADVISED OF THIS TFC. HAD WE RAPIDLY DSNDED IN OUR TURN, THIS MAY HAVE BEEN A DIFFERENT STORY. NO TCASII ON BOARD. EVASIVE ACTION: MOMENTARY LEVEL OFF; PRECAUTIONARY.
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.