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37000 Feet | Browse and search NASA's Aviation Safety Reporting System |
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Air carrier aircraft made slight altitude deviation to avoid an aircraft that he never saw. ATC had the other aircraft on radar and in control. TCASII in the air carrier aircraft made an RA command that the air carrier aircraft obeyed.
| Attributes | |
| ACN | 206529 |
| Time | |
| Date | 199204 |
| Day | Sun |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | airport : elp |
| State Reference | TX |
| Altitude | msl bound lower : 5500 msl bound upper : 6000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : elp |
| Operator | common carrier : air carrier |
| Make Model Name | Medium Large Transport, Low Wing, 2 Turbojet Eng |
| Navigation In Use | Other Other |
| Flight Phase | climbout : initial |
| Route In Use | departure other |
| Flight Plan | IFR |
| Aircraft 2 | |
| Make Model Name | Any Unknown or Unlisted Aircraft Manufacturer |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : private pilot : instrument pilot : flight engineer pilot : commercial pilot : atp |
| Experience | flight time last 90 days : 210 flight time total : 6000 flight time type : 1000 |
| ASRS Report | 206529 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : commercial pilot : instrument |
| Events | |
| Anomaly | aircraft equipment problem : less severe altitude deviation : excursion from assigned altitude non adherence : far |
| Independent Detector | other controllera other flight crewa other other : unspecified |
| Resolutory Action | flight crew : returned to intended course or assigned course flight crew : took evasive action |
| Consequence | Other |
| Miss Distance | horizontal : 9000 vertical : 700 |
| Supplementary | |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation |
Narrative:
Approaching 6000 ft, departure called traffic 10 O'clock and 7000 ft. I said 'no joy' and requested higher. Departure said no and we stayed at 6000 ft. Next we received a TCASII RA that commanded a 200 FPM descent. We complied and descended. Our TCASII radar display indicated the aircraft was 700 ft higher than we and offset about a mi or 2. TCASII worked fine. We never saw the airplane. We reported the TCASII RA to departure as explanation for the slight descent.
Original NASA ASRS Text
Title: ACR ACFT MADE SLIGHT ALT DEV TO AVOID AN ACFT THAT HE NEVER SAW. ATC HAD THE OTHER ACFT ON RADAR AND IN CTL. TCASII IN THE ACR ACFT MADE AN RA COMMAND THAT THE ACR ACFT OBEYED.
Narrative: APCHING 6000 FT, DEP CALLED TFC 10 O'CLOCK AND 7000 FT. I SAID 'NO JOY' AND REQUESTED HIGHER. DEP SAID NO AND WE STAYED AT 6000 FT. NEXT WE RECEIVED A TCASII RA THAT COMMANDED A 200 FPM DSCNT. WE COMPLIED AND DSNDED. OUR TCASII RADAR DISPLAY INDICATED THE ACFT WAS 700 FT HIGHER THAN WE AND OFFSET ABOUT A MI OR 2. TCASII WORKED FINE. WE NEVER SAW THE AIRPLANE. WE RPTED THE TCASII RA TO DEP AS EXPLANATION FOR THE SLIGHT DSCNT.
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.