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Air carrier X non adherence to ATC clearance TCASII TA RA unauthorized climb evasive action taken from small aircraft Y.
| Attributes | |
| ACN | 201383 |
| Time | |
| Date | 199202 |
| Day | Thu |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | atc facility : hub |
| State Reference | TX |
| Altitude | msl bound lower : 6100 msl bound upper : 6800 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : iah |
| Operator | common carrier : air carrier |
| Make Model Name | Medium Large Transport, Low Wing, 2 Turbojet Eng |
| Flight Phase | descent other |
| Route In Use | enroute : direct |
| Flight Plan | IFR |
| Aircraft 2 | |
| Operator | general aviation : personal |
| Make Model Name | Small Aircraft, Low Wing, 1 Eng, Retractable Gear |
| Flight Phase | climbout : intermediate altitude |
| Flight Plan | VFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 225 flight time total : 4800 flight time type : 225 |
| ASRS Report | 201383 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Events | |
| Anomaly | altitude deviation : undershoot non adherence : clearance |
| Independent Detector | aircraft equipment other aircraft equipment : unspecified |
| Resolutory Action | flight crew : took evasive action |
| Consequence | Other |
| Miss Distance | horizontal : 0 vertical : 600 |
| Supplementary | |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation |
Narrative:
Small aircraft Y was in a climb to 5500 ft. Approach gave us the small aircraft Y traffic when he was at our 1 O'clock position. We were in a descent to 6000 ft and at 6100 ft we had TCASII TA followed immediately by a climb RA. No visual sightings of aircraft was made. An immediate climb was made to 6800 ft after clearing airspace. I called approach and advised we had a TCASII alert and were climbing to 6800 ft. Once clear of known traffic we reported and descended to 6000 ft. A combination of our descent and the other acfts climb with little or no horizontal separation. We believe that small aircraft Y gave us the climb advisory.
Original NASA ASRS Text
Title: ACR X NON ADHERENCE TO ATC CLRNC TCASII TA RA UNAUTHORIZED CLB EVASIVE ACTION TAKEN FROM SMA Y.
Narrative: SMA Y WAS IN A CLB TO 5500 FT. APCH GAVE US THE SMA Y TFC WHEN HE WAS AT OUR 1 O'CLOCK POS. WE WERE IN A DSCNT TO 6000 FT AND AT 6100 FT WE HAD TCASII TA FOLLOWED IMMEDIATELY BY A CLB RA. NO VISUAL SIGHTINGS OF ACFT WAS MADE. AN IMMEDIATE CLB WAS MADE TO 6800 FT AFTER CLRING AIRSPACE. I CALLED APCH AND ADVISED WE HAD A TCASII ALERT AND WERE CLBING TO 6800 FT. ONCE CLR OF KNOWN TFC WE RPTED AND DSNDED TO 6000 FT. A COMBINATION OF OUR DSCNT AND THE OTHER ACFTS CLB WITH LITTLE OR NO HORIZ SEPARATION. WE BELIEVE THAT SMA Y GAVE US THE CLB ADVISORY.
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.