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At FL370 flight crew of widebody transport had TCASII RA. Captain climbed aircraft to FL378 to clear the RA.
| Attributes | |
| ACN | 199176 |
| Time | |
| Date | 199201 |
| Day | Tue |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | atc facility : dfw |
| State Reference | TX |
| Altitude | msl bound lower : 37000 msl bound upper : 37800 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : zfw |
| Operator | common carrier : air carrier |
| Make Model Name | Widebody, Low Wing, 2 Turbojet Eng |
| Navigation In Use | Other Other |
| Flight Phase | climbout : intermediate altitude cruise other descent other |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : flight engineer pilot : instrument pilot : commercial pilot : cfi pilot : atp |
| Experience | flight time last 90 days : 75 flight time total : 9500 flight time type : 100 |
| ASRS Report | 199176 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp pilot : commercial pilot : instrument |
| Events | |
| Anomaly | altitude deviation : excursion from assigned altitude non adherence : clearance other anomaly other |
| Independent Detector | other flight crewa |
| Resolutory Action | flight crew : returned to intended course or assigned course |
| Consequence | Other |
| Supplementary | |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation |
Narrative:
Eastbound in cruise at FL370 we got TCASII TA. Intruder aircraft was opposite direction coming from our 1 O'clock position. TCASII issued an RA with climb advisory, we complied immediately, still unable to visually pick up intruder. By 37800 TCASII gave the clear of traffic signal. We advised ATC of our altitude deviation and the reason. ATC said traffic was level at FL350. I believe this was caused by the traffic climbing below us. However, we were unable to verify either visually or via ATC, as to loss of separation. TCASII works.
Original NASA ASRS Text
Title: AT FL370 FLC OF WDB HAD TCASII RA. CAPT CLBED ACFT TO FL378 TO CLR THE RA.
Narrative: EBOUND IN CRUISE AT FL370 WE GOT TCASII TA. INTRUDER ACFT WAS OPPOSITE DIRECTION COMING FROM OUR 1 O'CLOCK POS. TCASII ISSUED AN RA WITH CLB ADVISORY, WE COMPLIED IMMEDIATELY, STILL UNABLE TO VISUALLY PICK UP INTRUDER. BY 37800 TCASII GAVE THE CLR OF TFC SIGNAL. WE ADVISED ATC OF OUR ALTDEV AND THE REASON. ATC SAID TFC WAS LEVEL AT FL350. I BELIEVE THIS WAS CAUSED BY THE TFC CLBING BELOW US. HOWEVER, WE WERE UNABLE TO VERIFY EITHER VISUALLY OR VIA ATC, AS TO LOSS OF SEPARATION. TCASII WORKS.
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.