 |
37000 Feet | Browse and search NASA's Aviation Safety Reporting System |
|
Air carrier B757 flight crew, reacting to an unexpected GPWS, incurs a TCASII TA and initiates evasive maneuver due to a potentially converging A320 on approach to slc.
| Attributes | |
| ACN | 422615 |
| Time | |
| Date | 199812 |
| Day | Tue |
| Local Time Of Day | 1801 To 2400 |
| Place | |
| Locale Reference | airport : slc |
| State Reference | UT |
| Altitude | msl bound lower : 9000 msl bound upper : 10300 |
| Environment | |
| Flight Conditions | IMC |
| Light | Night |
| Aircraft 1 | |
| Operator | common carrier : air carrier |
| Flight Phase | descent other |
| Route In Use | arrival other |
| Flight Plan | IFR |
| Aircraft 2 | |
| Operator | common carrier : air carrier |
| Flight Phase | descent : approach |
| Route In Use | arrival other |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Experience | flight time last 90 days : 250 flight time total : 6000 flight time type : 1000 |
| ASRS Report | 422615 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Events | |
| Anomaly | altitude deviation : excursion from assigned altitude conflict : airborne less severe other anomaly other |
| Independent Detector | aircraft equipment other aircraft equipment : unspecified |
| Consequence | Other |
| Miss Distance | horizontal : 15000 vertical : 700 |
| Supplementary | |
| Air Traffic Incident | Pilot Deviation |
Narrative:
While at 9000 ft MSL on the localizer for runway 34L and under slc approach control, I (aircraft X) got an unexpected GPWS warning. While reacting to the GPWS warning and climbing through 9800 ft MSL, I got a TCASII TA on an airbus 320 (aircraft Y) who was at my left 10 O'clock position, approximately 2.5 NM. With GPWS warning no longer a factor, I reacted to the TCASII TA and began to level, reaching 10300 ft MSL before leveling at 10000 ft MSL.
Original NASA ASRS Text
Title: ACR B757 FLC, REACTING TO AN UNEXPECTED GPWS, INCURS A TCASII TA AND INITIATES EVASIVE MANEUVER DUE TO A POTENTIALLY CONVERGING A320 ON APCH TO SLC.
Narrative: WHILE AT 9000 FT MSL ON THE LOC FOR RWY 34L AND UNDER SLC APCH CTL, I (ACFT X) GOT AN UNEXPECTED GPWS WARNING. WHILE REACTING TO THE GPWS WARNING AND CLBING THROUGH 9800 FT MSL, I GOT A TCASII TA ON AN AIRBUS 320 (ACFT Y) WHO WAS AT MY L 10 O'CLOCK POS, APPROX 2.5 NM. WITH GPWS WARNING NO LONGER A FACTOR, I REACTED TO THE TCASII TA AND BEGAN TO LEVEL, REACHING 10300 FT MSL BEFORE LEVELING AT 10000 FT MSL.
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.