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Air carrier X TCASII RA climb from medium large transport. False TCASII RA. Unauthorized climb from assigned altitude. Pilot deviation.
| Attributes | |
| ACN | 242404 |
| Time | |
| Date | 199305 |
| Day | Mon |
| Local Time Of Day | 0001 To 0600 |
| Place | |
| Locale Reference | atc facility : pdx |
| State Reference | OR |
| Altitude | msl bound lower : 10000 msl bound upper : 10700 |
| Environment | |
| Flight Conditions | Marginal |
| Light | Daylight |
| Aircraft 1 | |
| Operator | common carrier : air carrier |
| Make Model Name | Medium Transport, High Wing, 2 Turboprop Eng |
| Flight Phase | cruise other |
| Route In Use | enroute : direct enroute airway : pdx |
| Flight Plan | IFR |
| Aircraft 2 | |
| Operator | common carrier : air carrier |
| Make Model Name | Medium Large Transport, Low Wing, 2 Turbojet Eng |
| Navigation In Use | Other Other |
| Flight Phase | cruise other |
| Route In Use | enroute : direct |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | government : faa |
| Function | controller : approach |
| Qualification | controller : radar |
| Experience | controller radar : 15 |
| ASRS Report | 242404 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Events | |
| Anomaly | altitude deviation : excursion from assigned altitude conflict : airborne less severe non adherence : clearance |
| Independent Detector | aircraft equipment other aircraft equipment : unspecified |
| Resolutory Action | flight crew : took evasive action |
| Consequence | Other |
| Miss Distance | horizontal : 12000 vertical : 1000 |
| Supplementary | |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation |
Narrative:
Air carrier X was inbound on the bonvl arrival leveling at 10000 ft. Medium large transport was on departure level at 9000 ft. Both aircraft crossed flight paths approximately 2 mi apart with 1000 ft vertical separation. Air carrier X climbed to 10700 ft with no warning. It turned out that air carrier X was TCASII equipped and received a false TCASII warning.
Original NASA ASRS Text
Title: ACR X TCASII RA CLB FROM MLG. FALSE TCASII RA. UNAUTH CLB FROM ASSIGNED ALT. PLTDEV.
Narrative: ACR X WAS INBOUND ON THE BONVL ARR LEVELING AT 10000 FT. MLG WAS ON DEP LEVEL AT 9000 FT. BOTH ACFT CROSSED FLT PATHS APPROX 2 MI APART WITH 1000 FT VERT SEPARATION. ACR X CLBED TO 10700 FT WITH NO WARNING. IT TURNED OUT THAT ACR X WAS TCASII EQUIPPED AND RECEIVED A FALSE TCASII WARNING.
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.