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Airborne conflict developed between an medium large transport and an light transport while the medium large transport was descending through the light transport altitude.
| Attributes | |
| ACN | 111670 |
| Time | |
| Date | 198905 |
| Day | Tue |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | atc facility : fim |
| State Reference | CA |
| Altitude | msl bound lower : 14500 msl bound upper : 15000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Operator | common carrier : air carrier |
| Make Model Name | Medium Large Transport, Low Wing, 2 Turbojet Eng |
| Navigation In Use | Other Other |
| Flight Phase | descent other |
| Route In Use | enroute airway : zla |
| Flight Plan | IFR |
| Aircraft 2 | |
| Operator | common carrier : air carrier |
| Make Model Name | Light Transport, Low Wing, 2 Turboprop Eng |
| Flight Phase | cruise other cruise other |
| Flight Plan | VFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : instrument pilot : commercial pilot : atp pilot : flight engineer |
| Experience | flight time last 90 days : 180 flight time total : 6000 flight time type : 2000 |
| ASRS Report | 111670 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : atp |
| Events | |
| Anomaly | conflict : airborne less severe other anomaly other |
| Independent Detector | other controllera other flight crewa |
| Resolutory Action | controller : issued new clearance flight crew : took evasive action other |
| Consequence | Other |
| Miss Distance | horizontal : 1500 vertical : 500 |
| Supplementary | |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | other |
Narrative:
We were cleared from FL240 to cross tandy intersection at 14000'. As we passed 14800', ATC reported VFR traffic (an air carrier light transport) at 10 O'clock at 14500'. We did see traffic at that position, but it was an air carrier jet ahead of us, several mi away. As we passed 14600', ATC said climb to 15000'. I immediately climbed to 15000'. As we levelled off, I saw the traffic pass below us,just off our left side. Apparently the air carrier had a conflict with the same aircraft, as there were some comments to that effect after our encounter. We should have been given a 15000' level off earlier in our descent to avoid the conflict.
Original NASA ASRS Text
Title: AIRBORNE CONFLICT DEVELOPED BETWEEN AN MLG AND AN LTT WHILE THE MLG WAS DESCENDING THROUGH THE LTT ALT.
Narrative: WE WERE CLRED FROM FL240 TO CROSS TANDY INTXN AT 14000'. AS WE PASSED 14800', ATC REPORTED VFR TFC (AN ACR LTT) AT 10 O'CLOCK AT 14500'. WE DID SEE TFC AT THAT POS, BUT IT WAS AN ACR JET AHEAD OF US, SEVERAL MI AWAY. AS WE PASSED 14600', ATC SAID CLB TO 15000'. I IMMEDIATELY CLBED TO 15000'. AS WE LEVELLED OFF, I SAW THE TFC PASS BELOW US,JUST OFF OUR LEFT SIDE. APPARENTLY THE ACR HAD A CONFLICT WITH THE SAME ACFT, AS THERE WERE SOME COMMENTS TO THAT EFFECT AFTER OUR ENCOUNTER. WE SHOULD HAVE BEEN GIVEN A 15000' LEVEL OFF EARLIER IN OUR DSCNT TO AVOID THE CONFLICT.
Data retrieved from NASA's ASRS site as of August 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.