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A widebody transport flying in czyz, on, airspace during cruise, has a false TCASII RA that causes the flight crew to climb 400 ft above cruise altitude.
| Attributes | |
| ACN | 375400 |
| Time | |
| Date | 199707 |
| Day | Wed |
| Local Time Of Day | 1801 To 2400 |
| Place | |
| Locale Reference | atc facility : yxi |
| State Reference | ON |
| Altitude | msl bound lower : 33000 msl bound upper : 33400 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : czyz tracon : abe |
| Operator | common carrier : air carrier |
| Make Model Name | Commercial Fixed Wing |
| Operating Under FAR Part | Part 121 |
| Flight Phase | cruise other |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : commercial pilot : atp pilot : instrument |
| Experience | flight time last 90 days : 180 flight time total : 20000 flight time type : 220 |
| ASRS Report | 375400 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : commercial pilot : instrument |
| Events | |
| Anomaly | altitude deviation : excursion from assigned altitude other anomaly other |
| Independent Detector | atc equipment other atc equipment : unspecified aircraft equipment other aircraft equipment : unspecified other controllera |
| Resolutory Action | flight crew : returned to intended course or assigned course flight crew : took evasive action |
| Consequence | Other |
| Supplementary | |
| Primary Problem | Aircraft |
| Air Traffic Incident | other |
Narrative:
RA in cruise at FL330. TCASII commanded climb. Deviated 400 ft above assigned altitude (FL330) to comply with RA. Toronto center advised only traffic in area was at FL370.
Original NASA ASRS Text
Title: A WDB FLYING IN CZYZ, ON, AIRSPACE DURING CRUISE, HAS A FALSE TCASII RA THAT CAUSES THE FLC TO CLB 400 FT ABOVE CRUISE ALT.
Narrative: RA IN CRUISE AT FL330. TCASII COMMANDED CLB. DEVIATED 400 FT ABOVE ASSIGNED ALT (FL330) TO COMPLY WITH RA. TORONTO CTR ADVISED ONLY TFC IN AREA WAS AT FL370.
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.