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Conflict averted by alert ARTCC radar controller response in keeping traffic separation when flight crew of air carrier X failed to start descent after clearance issued.
| Attributes | |
| ACN | 260507 |
| Time | |
| Date | 199312 |
| Day | Thu |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | atc facility : oal |
| State Reference | NV |
| Altitude | msl bound lower : 28000 msl bound upper : 31000 |
| Environment | |
| Flight Conditions | Mixed |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : zoa tower : sjc |
| Operator | common carrier : air carrier |
| Make Model Name | Any Unknown or Unlisted Aircraft Manufacturer |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | Other Other |
| Flight Phase | cruise other descent other other |
| Route In Use | enroute : direct |
| Flight Plan | IFR |
| Aircraft 2 | |
| Operator | common carrier : air carrier |
| Make Model Name | Any Unknown or Unlisted Aircraft Manufacturer |
| Flight Phase | cruise other |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer observation : company check pilot oversight : pic |
| Qualification | pilot : commercial pilot : atp pilot : cfi pilot : instrument |
| Experience | flight time last 90 days : 100 flight time total : 8000 flight time type : 1400 |
| ASRS Report | 260507 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain instruction : trainee |
| Qualification | pilot : atp |
| Events | |
| Anomaly | altitude deviation : undershoot conflict : airborne less severe non adherence : clearance |
| Independent Detector | other controllera |
| Resolutory Action | controller : issued new clearance flight crew : exited adverse environment other |
| Consequence | Other |
| Miss Distance | horizontal : 36000 vertical : 500 |
| Supplementary | |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation |
Narrative:
New captain was flying aircraft. We were cleared direct to inyoe intersection to hold. I keyed the holding pattern into the FMC just as ATC cleared us from FL310 to a lower (FL280?) altitude. I acknowledged ATC and set the new altitude into the MCP window just as the captain asked me about entering holding patterns into the FMC. While explaining it to him, I did not notice that we had not begun our descent until ATC gave us an immediate right turn to avoid another air carrier aircraft also at FL310. I think in the future I'll be more aware of my situation when flying with a crewmember who is new to the airplane.
Original NASA ASRS Text
Title: CONFLICT AVERTED BY ALERT ARTCC RADAR CTLR RESPONSE IN KEEPING TFC SEPARATION WHEN FLC OF ACR X FAILED TO START DSCNT AFTER CLRNC ISSUED.
Narrative: NEW CAPT WAS FLYING ACFT. WE WERE CLRED DIRECT TO INYOE INTXN TO HOLD. I KEYED THE HOLDING PATTERN INTO THE FMC JUST AS ATC CLRED US FROM FL310 TO A LOWER (FL280?) ALT. I ACKNOWLEDGED ATC AND SET THE NEW ALT INTO THE MCP WINDOW JUST AS THE CAPT ASKED ME ABOUT ENTERING HOLDING PATTERNS INTO THE FMC. WHILE EXPLAINING IT TO HIM, I DID NOT NOTICE THAT WE HAD NOT BEGUN OUR DSCNT UNTIL ATC GAVE US AN IMMEDIATE R TURN TO AVOID ANOTHER ACR ACFT ALSO AT FL310. I THINK IN THE FUTURE I'LL BE MORE AWARE OF MY SIT WHEN FLYING WITH A CREWMEMBER WHO IS NEW TO THE AIRPLANE.
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.