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Altitude deviation altitude excursion in flight crew response to TCASII RA in a night overwater operation.
| Attributes | |
| ACN | 262273 |
| Time | |
| Date | 199401 |
| Day | Mon |
| Local Time Of Day | 1801 To 2400 |
| Place | |
| Locale Reference | atc facility : kbv |
| State Reference | FO |
| Altitude | msl bound lower : 29000 msl bound upper : 29500 |
| Environment | |
| Flight Conditions | VMC |
| Light | Night |
| Aircraft 1 | |
| Operator | common carrier : air carrier |
| Make Model Name | Any Unknown or Unlisted Aircraft Manufacturer |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | Other |
| Flight Phase | cruise other |
| Route In Use | enroute : atlantic enroute : other oceanic enroute airway : b646 |
| Flight Plan | IFR |
| Aircraft 2 | |
| Make Model Name | Any Unknown or Unlisted Aircraft Manufacturer |
| Operating Under FAR Part | other : unknown |
| Flight Phase | climbout : intermediate altitude |
| Route In Use | enroute : atlantic enroute : other oceanic |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 100 flight time total : 15000 |
| ASRS Report | 262273 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : atp |
| Events | |
| Anomaly | altitude deviation : excursion from assigned altitude altitude deviation : overshoot conflict : airborne less severe non adherence : required legal separation non adherence : clearance other anomaly other |
| Independent Detector | aircraft equipment other aircraft equipment : unspecified |
| Resolutory Action | flight crew : took evasive action |
| Consequence | Other |
| Miss Distance | vertical : 500 |
| Supplementary | |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation |
Narrative:
Routing: shannon to miami. While flying assigned routing (NA4) and altitude (FL290) between position deado and lears. Approximately 300 NM southwest of bermuda, observed approaching traffic on TCASII 800 ft below us. As traffic approached 5 mi, it started to climb up into us. We received a TA followed by an RA command 'climb, climb, climb,' which we responded to. Broadcast on 121.5, aircraft climbing to FL290, stop climb. I had visual sighting on his lights and he appeared to turn hard left and descend, approximately 500 ft below and to our right. TCASII advised clear of traffic at 500 ft in our climb. We returned to our previous altitude and advised new york arinc on high frequency 8846. Without the TCASII warning we would not have had enough visual to avoid traffic!
Original NASA ASRS Text
Title: ALTDEV ALT EXCURSION IN FLC RESPONSE TO TCASII RA IN A NIGHT OVERWATER OP.
Narrative: ROUTING: SHANNON TO MIAMI. WHILE FLYING ASSIGNED ROUTING (NA4) AND ALT (FL290) BTWN POS DEADO AND LEARS. APPROX 300 NM SW OF BERMUDA, OBSERVED APCHING TFC ON TCASII 800 FT BELOW US. AS TFC APCHED 5 MI, IT STARTED TO CLB UP INTO US. WE RECEIVED A TA FOLLOWED BY AN RA COMMAND 'CLB, CLB, CLB,' WHICH WE RESPONDED TO. BROADCAST ON 121.5, ACFT CLBING TO FL290, STOP CLB. I HAD VISUAL SIGHTING ON HIS LIGHTS AND HE APPEARED TO TURN HARD L AND DSND, APPROX 500 FT BELOW AND TO OUR R. TCASII ADVISED CLR OF TFC AT 500 FT IN OUR CLB. WE RETURNED TO OUR PREVIOUS ALT AND ADVISED NEW YORK ARINC ON HIGH FREQ 8846. WITHOUT THE TCASII WARNING WE WOULD NOT HAVE HAD ENOUGH VISUAL TO AVOID 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.