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An air carrier medium large transport climbed in response to a TCASII alert. There was small aircraft traffic not seen by the flight crew.
| Attributes | |
| ACN | 224220 |
| Time | |
| Date | 199210 |
| Day | Sat |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | atc facility : gep airport : msp |
| State Reference | MN |
| Altitude | msl bound lower : 10000 msl bound upper : 11000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Operator | common carrier : air carrier |
| Make Model Name | Medium Large Transport, Low Wing, 2 Turbojet Eng |
| Flight Phase | cruise other |
| Route In Use | enroute airway : zmp |
| Flight Plan | IFR |
| Aircraft 2 | |
| Make Model Name | Small Aircraft |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 120 flight time total : 21000 flight time type : 15000 |
| ASRS Report | 224220 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : atp pilot : cfi pilot : commercial pilot : flight engineer pilot : instrument |
| Experience | flight time last 90 days : 65 flight time total : 7000 flight time type : 1500 |
| ASRS Report | 224371 |
| Events | |
| Anomaly | altitude deviation : excursion from assigned altitude conflict : airborne less severe other anomaly other |
| Independent Detector | aircraft equipment other aircraft equipment : unspecified other controllera other flight crewa |
| Resolutory Action | flight crew : returned to intended course or assigned course flight crew : took evasive action |
| Consequence | Other |
| Supplementary | |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation other |
Narrative:
As we started out the gopher VOR 130 degree radial showing 300 ft below us. Approach control said the target at 12 O'clock at 9500 ft (or 500 ft below us). We did not have visual contact with the aircraft. TCASII gave us a RA to 'climb'. We pulled up to 11000 ft and immediately reported our climb to approach control. The lead flight attendant shortly thereafter reported that she saw a light plane go under us. We returned to 10000 ft after the RA with no further complications. Supplemental information from acn 224371. At 10000 ft, we were on top of a scattered to broken layer of clouds. At no time did I have visual reference with the traffic.
Original NASA ASRS Text
Title: AN ACR MLG CLBED IN RESPONSE TO A TCASII ALERT. THERE WAS SMA TFC NOT SEEN BY THE FLC.
Narrative: AS WE STARTED OUT THE GOPHER VOR 130 DEG RADIAL SHOWING 300 FT BELOW US. APCH CTL SAID THE TARGET AT 12 O'CLOCK AT 9500 FT (OR 500 FT BELOW US). WE DID NOT HAVE VISUAL CONTACT WITH THE ACFT. TCASII GAVE US A RA TO 'CLB'. WE PULLED UP TO 11000 FT AND IMMEDIATELY RPTED OUR CLB TO APCH CTL. THE LEAD FLT ATTENDANT SHORTLY THEREAFTER RPTED THAT SHE SAW A LIGHT PLANE GO UNDER US. WE RETURNED TO 10000 FT AFTER THE RA WITH NO FURTHER COMPLICATIONS. SUPPLEMENTAL INFO FROM ACN 224371. AT 10000 FT, WE WERE ON TOP OF A SCATTERED TO BROKEN LAYER OF CLOUDS. AT NO TIME DID I HAVE VISUAL REF WITH THE TFC.
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.