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2 air carrier aircraft on random tracks over the atlantic cross with 1 aircraft 700 ft above the other.
| Attributes | |
| ACN | 230608 |
| Time | |
| Date | 199301 |
| Day | Tue |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | atc facility : lpla |
| State Reference | FO |
| Altitude | msl bound lower : 29700 msl bound upper : 31000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : lppo |
| 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 |
| Route In Use | enroute : other oceanic enroute : atlantic |
| Flight Plan | IFR |
| Aircraft 2 | |
| Operator | common carrier : air carrier |
| Make Model Name | Large Transport, Low Wing, 2 Turbojet Eng |
| Navigation In Use | Other Other |
| Flight Phase | cruise other |
| Route In Use | enroute : atlantic enroute : other oceanic |
| 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 : 11500 flight time type : 1100 |
| ASRS Report | 230608 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 200 flight time total : 11500 flight time type : 2000 |
| ASRS Report | 230306 |
| Events | |
| Anomaly | conflict : airborne less severe non adherence : far non adherence : required legal separation |
| Independent Detector | aircraft equipment other aircraft equipment : unspecified other flight crewa |
| Resolutory Action | controller : issued new clearance none taken : insufficient time |
| Consequence | faa : investigated |
| Miss Distance | horizontal : 0 vertical : 700 |
| Supplementary | |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | Operational Error |
Narrative:
Air carrier a flying madrid-iad random track wbound at oscar intersection time XA59Z FL290. At XA58.5Z santa maria oca issued climb clearance to air carrier a to maintain FL310. We started climb approximately 2 mi before the oscar intersection at XA59Z. Captain made following report to santa maria (air carrier a oscar XA59Z FL290 39N 40W 1603 38N 50W next). The FMC showed we crossed oscar in dlb at FL297). An air carrier B made a call to santa maria oca giving a position report of (air carrier B oscar XA59Z FL290 41N 40....) it seems that there was a possible traffic confliction. Oscar intersection and santa maria realized this when air carrier a was issued climb clearance 30 seconds before oscar.
Original NASA ASRS Text
Title: 2 ACR ACFT ON RANDOM TRACKS OVER THE ATLANTIC CROSS WITH 1 ACFT 700 FT ABOVE THE OTHER.
Narrative: ACR A FLYING MADRID-IAD RANDOM TRACK WBOUND AT OSCAR INTXN TIME XA59Z FL290. AT XA58.5Z SANTA MARIA OCA ISSUED CLB CLRNC TO ACR A TO MAINTAIN FL310. WE STARTED CLB APPROX 2 MI BEFORE THE OSCAR INTXN AT XA59Z. CAPT MADE FOLLOWING RPT TO SANTA MARIA (ACR A OSCAR XA59Z FL290 39N 40W 1603 38N 50W NEXT). THE FMC SHOWED WE CROSSED OSCAR IN DLB AT FL297). AN ACR B MADE A CALL TO SANTA MARIA OCA GIVING A POS RPT OF (ACR B OSCAR XA59Z FL290 41N 40....) IT SEEMS THAT THERE WAS A POSSIBLE TFC CONFLICTION. OSCAR INTXN AND SANTA MARIA REALIZED THIS WHEN ACR A WAS ISSUED CLB CLRNC 30 SECONDS BEFORE OSCAR.
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.