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37000 Feet | Browse and search NASA's Aviation Safety Reporting System |
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Pilot deviation.
| Attributes | |
| ACN | 288429 |
| Time | |
| Date | 199411 |
| Day | Tue |
| Local Time Of Day | 1801 To 2400 |
| Place | |
| Locale Reference | atc facility : lmn |
| State Reference | IA |
| Altitude | msl bound lower : 31000 msl bound upper : 31800 |
| Environment | |
| Flight Conditions | VMC |
| Light | Night |
| Aircraft 1 | |
| Controlling Facilities | artcc : zmp |
| Operator | common carrier : air carrier |
| Make Model Name | B767 Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | Other Other |
| Flight Phase | cruise other |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 200 flight time total : 4000 flight time type : 1540 |
| ASRS Report | 288429 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp pilot : commercial pilot : flight engineer pilot : instrument |
| Experience | flight time last 90 days : 190 flight time total : 10000 flight time type : 3500 |
| ASRS Report | 288629 |
| Events | |
| Anomaly | altitude deviation : excursion from assigned altitude non adherence : clearance other anomaly other |
| Independent Detector | aircraft equipment other aircraft equipment : unspecified |
| Resolutory Action | flight crew : took evasive action other |
| Consequence | Other |
| Miss Distance | horizontal : 0 vertical : 500 |
| Supplementary | |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation |
Narrative:
In cruise at FL310 TCASII indicated traffic at 500 ft below and 3 mi straight ahead immediately went to RA with 'climb.' vsi showed command of plus 2000 FPM climb initiated climb by disconnecting autoplt. At FL318, TCASII gave 'monitor vertical speed' then traffic disappeared with no 'clear of conflict.' returned to altitude of FL310. ATC center said closest aircraft to us was 2 O'clock 12 mi at FL230. Supplemental information from acn 288431: a false RA occurred causing problems in the sector. No other aircraft in vicinity of air carrier X. He responded to RA by climbing. It just disrupted the sector. Supplemental information from acn 288629: we returned to our assigned altitude. No visual sighting occurred, and no ATC contact was made with our conflict. Suspect TCASII false target.
Original NASA ASRS Text
Title: PLTDEV.
Narrative: IN CRUISE AT FL310 TCASII INDICATED TFC AT 500 FT BELOW AND 3 MI STRAIGHT AHEAD IMMEDIATELY WENT TO RA WITH 'CLB.' VSI SHOWED COMMAND OF PLUS 2000 FPM CLB INITIATED CLB BY DISCONNECTING AUTOPLT. AT FL318, TCASII GAVE 'MONITOR VERT SPD' THEN TFC DISAPPEARED WITH NO 'CLR OF CONFLICT.' RETURNED TO ALT OF FL310. ATC CTR SAID CLOSEST ACFT TO US WAS 2 O'CLOCK 12 MI AT FL230. SUPPLEMENTAL INFO FROM ACN 288431: A FALSE RA OCCURRED CAUSING PROBS IN THE SECTOR. NO OTHER ACFT IN VICINITY OF ACR X. HE RESPONDED TO RA BY CLBING. IT JUST DISRUPTED THE SECTOR. SUPPLEMENTAL INFO FROM ACN 288629: WE RETURNED TO OUR ASSIGNED ALT. NO VISUAL SIGHTING OCCURRED, AND NO ATC CONTACT WAS MADE WITH OUR CONFLICT. SUSPECT TCASII FALSE TARGET.
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.