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37000 Feet | Browse and search NASA's Aviation Safety Reporting System |
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Air carrier flight crew received and acknowledged climb clearance from FL310 to FL350. As climb began, PNF observed opposite direction traffic at FL330 on TCASII, and stopped climb. PNF reported traffic in sight to ATC. When traffic was clear, controller again cleared aircraft to FL350.
| Attributes | |
| ACN | 392047 |
| Time | |
| Date | 199801 |
| Day | Sat |
| Local Time Of Day | 1801 To 2400 |
| Place | |
| Locale Reference | atc facility : rbs |
| State Reference | IL |
| Altitude | msl bound lower : 31000 msl bound upper : 31200 |
| Environment | |
| Flight Conditions | VMC |
| Light | Night |
| Aircraft 1 | |
| Controlling Facilities | artcc : zau |
| Operator | common carrier : air carrier |
| Make Model Name | Commercial Fixed Wing |
| Operating Under FAR Part | Part 121 |
| Flight Phase | cruise other |
| Flight Plan | IFR |
| Aircraft 2 | |
| Make Model Name | Any Unknown or Unlisted Aircraft Manufacturer |
| Operating Under FAR Part | other : unknown |
| 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 : 250 flight time total : 9000 flight time type : 6000 |
| ASRS Report | 392047 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 180 flight time total : 10100 flight time type : 180 |
| ASRS Report | 392042 |
| Events | |
| Anomaly | conflict : airborne less severe non adherence : required legal separation non adherence : published procedure other anomaly other |
| Independent Detector | aircraft equipment other aircraft equipment : unspecified other flight crewa |
| Resolutory Action | controller : issued new clearance flight crew : took evasive action flight crew : returned to intended course or assigned course |
| Consequence | Other |
| Miss Distance | horizontal : 3000 vertical : 1800 |
| Supplementary | |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | Operational Error |
Narrative:
Level at FL310, issued climb to FL350. Had just started climb when TCASII target showed converging at FL330. PNF visually confirmed traffic. We leveled at FL312. After traffic passed, we continued climb to FL350. ATC made partial communication with call sign, but no instruction as targets passed. Good catch by PNF. TCASII has been an excellent addition to the cockpit. Supplemental information from acn 392042: as copilot started climb, I saw an aircraft on TCASII and visually at 11 O'clock, 2000 ft above, coming toward us. As it passed overhead and a little to our left, I stated that we 'saw him.'
Original NASA ASRS Text
Title: ACR FLC RECEIVED AND ACKNOWLEDGED CLB CLRNC FROM FL310 TO FL350. AS CLB BEGAN, PNF OBSERVED OPPOSITE DIRECTION TFC AT FL330 ON TCASII, AND STOPPED CLB. PNF RPTED TFC IN SIGHT TO ATC. WHEN TFC WAS CLR, CTLR AGAIN CLRED ACFT TO FL350.
Narrative: LEVEL AT FL310, ISSUED CLB TO FL350. HAD JUST STARTED CLB WHEN TCASII TARGET SHOWED CONVERGING AT FL330. PNF VISUALLY CONFIRMED TFC. WE LEVELED AT FL312. AFTER TFC PASSED, WE CONTINUED CLB TO FL350. ATC MADE PARTIAL COM WITH CALL SIGN, BUT NO INSTRUCTION AS TARGETS PASSED. GOOD CATCH BY PNF. TCASII HAS BEEN AN EXCELLENT ADDITION TO THE COCKPIT. SUPPLEMENTAL INFO FROM ACN 392042: AS COPLT STARTED CLB, I SAW AN ACFT ON TCASII AND VISUALLY AT 11 O'CLOCK, 2000 FT ABOVE, COMING TOWARD US. AS IT PASSED OVERHEAD AND A LITTLE TO OUR L, I STATED THAT WE 'SAW HIM.'
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.