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B757 captain reported two flight attendants were injured during an evasive maneuver in response to a false TCAS RA.
| Attributes | |
| ACN | 1384941 |
| Time | |
| Date | 201609 |
| Local Time Of Day | 0601-1200 |
| Place | |
| Locale Reference | ZOB.ARTCC |
| State Reference | OH |
| Environment | |
| Flight Conditions | VMC |
| Aircraft 1 | |
| Make Model Name | B757 Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Cruise |
| Flight Plan | IFR |
| Component | |
| Aircraft Component | Traffic Collision Avoidance System (TCAS) |
| Person 1 | |
| Function | Pilot Flying Captain |
| Qualification | Flight Crew Air Transport Pilot (ATP) |
| Experience | Flight Crew Last 90 Days 200 Flight Crew Total 5715 Flight Crew Type 4319 |
| Events | |
| Anomaly | Aircraft Equipment Problem Less Severe Deviation - Altitude Excursion From Assigned Altitude Flight Deck / Cabin / Aircraft Event Illness |
Narrative:
While cruising at FL370 north of sbn we received a TCAS TA - traffic; traffic. My first officer and I noticed a yellow target right over the airplane indicating 00 feet on the lower EICAS screen. Shortly thereafter we received an RA - descend; descend. As the flying pilot I immediately complied with the command. At approximately FL365 we received a clear of conflict and climbed back to our altitude of FL370. During the deviation two flight attendant's in the rear galley received neck and back injuries from hitting the ceiling of the AC due to the evasive maneuver caused by the RA command. We weren't sure if the system malfunctioned by the 00 altitude readout but entered it in the maintenance logbook. We reported the RA to cleveland center and we were told there was no traffic in the area.
Original NASA ASRS Text
Title: B757 Captain reported two flight attendants were injured during an evasive maneuver in response to a false TCAS RA.
Narrative: While cruising at FL370 north of SBN we received a TCAS TA - traffic; traffic. My first officer and I noticed a yellow target right over the airplane indicating 00 feet on the lower EICAS screen. Shortly thereafter we received an RA - descend; descend. As the flying pilot I immediately complied with the command. At approximately FL365 we received a clear of conflict and climbed back to our altitude of FL370. During the deviation two FA's in the rear galley received neck and back injuries from hitting the ceiling of the AC due to the evasive maneuver caused by the RA command. We weren't sure if the system malfunctioned by the 00 altitude readout but entered it in the maintenance logbook. We reported the RA to Cleveland Center and we were told there was no traffic in the area.
Data retrieved from NASA's ASRS site 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.