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Close proximity air carrier large transport on descent into mco and unknown aircraft climbing out trying to stay VFR.
| Attributes | |
| ACN | 184913 |
| Time | |
| Date | 199107 |
| Day | Fri |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | atc facility : lal airport : mco |
| State Reference | FL |
| Altitude | msl bound lower : 12700 msl bound upper : 13000 |
| Environment | |
| Flight Conditions | Mixed |
| Light | Daylight |
| Aircraft 1 | |
| Operator | common carrier : air carrier |
| Make Model Name | Large Transport, Low Wing, 2 Turbojet Eng |
| Navigation In Use | Other Other |
| Flight Phase | descent other |
| Route In Use | enroute : on vectors enroute airway : zma |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : flight engineer pilot : atp |
| Experience | flight time last 90 days : 250 flight time total : 30000 flight time type : 500 |
| ASRS Report | 184913 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : atp |
| Events | |
| Anomaly | conflict : nmac inflight encounter : weather |
| Independent Detector | aircraft equipment other aircraft equipment : unspecified other controllera |
| Resolutory Action | controller : issued new clearance flight crew : took evasive action |
| Consequence | Other |
| Miss Distance | horizontal : 150 vertical : 75 |
| Supplementary | |
| Primary Problem | Flight Crew Human Performance |
Narrative:
High workload at mia center delayed the traffic advisory. Preoccupation with avoiding WX in the area caused us not to see the traffic on TCAS until late. However TCAS did not issue a TA and we only saw he traffic on TCAS because of looking at WX north radar. Mia center believed we could see the traffic visually but we were in and out of the clouds. The center provided an avoidance vector when we hurriedly asked for one. TCAS issued a RA which we immediately heeded (and which probably saved us). We never actually saw the intruding traffic but he must have been trying to climb 'on top' in order to be VFR in less than 25 seconds from the time we initially saw the traffic on TCAS at 12700 and climbing, the center issued traffic, we asked for a vector away from traffic, avoidance vector was given, avoidance turn started, TCAS RA given and we started climb. Apparently we outclbed him.
Original NASA ASRS Text
Title: CLOSE PROX ACR LGT ON DSCNT INTO MCO AND UNKNOWN ACFT CLBING OUT TRYING TO STAY VFR.
Narrative: HIGH WORKLOAD AT MIA CENTER DELAYED THE TFC ADVISORY. PREOCCUPATION WITH AVOIDING WX IN THE AREA CAUSED US NOT TO SEE THE TFC ON TCAS UNTIL LATE. HOWEVER TCAS DID NOT ISSUE A TA AND WE ONLY SAW HE TFC ON TCAS BECAUSE OF LOOKING AT WX N RADAR. MIA CENTER BELIEVED WE COULD SEE THE TFC VISUALLY BUT WE WERE IN AND OUT OF THE CLOUDS. THE CENTER PROVIDED AN AVOIDANCE VECTOR WHEN WE HURRIEDLY ASKED FOR ONE. TCAS ISSUED A RA WHICH WE IMMEDIATELY HEEDED (AND WHICH PROBABLY SAVED US). WE NEVER ACTUALLY SAW THE INTRUDING TFC BUT HE MUST HAVE BEEN TRYING TO CLB 'ON TOP' IN ORDER TO BE VFR IN LESS THAN 25 SECONDS FROM THE TIME WE INITIALLY SAW THE TFC ON TCAS AT 12700 AND CLBING, THE CENTER ISSUED TFC, WE ASKED FOR A VECTOR AWAY FROM TFC, AVOIDANCE VECTOR WAS GIVEN, AVOIDANCE TURN STARTED, TCAS RA GIVEN AND WE STARTED CLB. APPARENTLY WE OUTCLBED 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.