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ZMA radar controller took a pointout on a learjet who was in ZMA airspace, deviating around WX, from a ZJX controller. At the same time the ZMA controller was vectoring an L1011 around the same WX. The ZMA controller lost the limited data block on the learjet and descended the L1011 through the learjet altitude. The L1011 got a TCASII RA and followed the RA and told the ZMA controller what he was doing. The L1011 was turned and told to climb, but less than standard separation occurred.
| Attributes | |
| ACN | 344107 |
| Time | |
| Date | 199608 |
| Day | Mon |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | atc facility : pie |
| State Reference | FL |
| Altitude | msl bound lower : 31000 msl bound upper : 31700 |
| Environment | |
| Flight Conditions | IMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : zma artcc : zjx |
| Operator | common carrier : air carrier |
| Make Model Name | L-1011 Tri-Star All Series |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | Other |
| Flight Phase | descent other |
| Route In Use | enroute : on vectors |
| Flight Plan | IFR |
| Aircraft 2 | |
| Make Model Name | Learjet 25 |
| Operating Under FAR Part | Part 91 |
| Flight Phase | cruise other |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : instrument pilot : commercial pilot : atp |
| Experience | flight time last 90 days : 220 flight time total : 5500 flight time type : 2000 |
| ASRS Report | 344107 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| ASRS Report | 344109 |
| Events | |
| Anomaly | conflict : airborne less severe inflight encounter : weather non adherence : published procedure non adherence : required legal separation other anomaly other |
| Independent Detector | atc equipment other atc equipment : unspecified aircraft equipment other aircraft equipment : unspecified other controllera |
| Resolutory Action | controller : issued new clearance other |
| Consequence | faa : investigated faa : reviewed incident with flight crew |
| Miss Distance | horizontal : 7200 vertical : 700 |
| Supplementary | |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | Operational Error Inter Facility Coordination Failure |
Narrative:
Due to thunderstorms we were deviating west of course on a 185 degree heading at FL330. As we passed a point 50 mi west of pie, the WX radar showed that we could take a turn to the east toward mco. I called ZMA for the turn. Miami said to maintain our 185 degree heading, but to descend to FL210. The captain began the descent. At approximately FL322 in IMC we got a TCASII RA to climb. I told the captain to climb. As he started to reverse the descent we continued to get the TCASII RA. By the time we were able to get the plane climbing we had descended to FL317. According to the TCASII the other aircraft passed directly beneath us at FL310. I told miami that we had traffic directly below us, miami then directed us to turn and climb back to FL330. Bottom line: TCASII saved us! Supplemental information from acn 344109: a descent of 1000 FPM was started. At approximately FL328 to FL329 the TCASII gave a TA with traffic at FL310 followed immediately by an RA to climb. TCASII final showed a plus 700 ft closure to conflicting aircraft. Crew called center and advised of climb and was instructed to climb back to FL330 and turn 30 degrees left. Conflicting aircraft appeared to pass directly underneath on TCASII, no visual contact due to clouds. Flight continued to mco and landed with no further noteworthy events. ZMA supervisor stated by phone that the conflicting traffic was being handled by ZJX, however, it was in ZMA airspace and no handoff had been made. She further stated by phone that this was a continuing problem between the 2 ctrs during WX deviations and high traffic workloads. Supplemental information from acn 344125: received a pointout from ZJX on light transport X, a learjet, a limited data block, climbing to FL310. Light transport Y deviated around WX that wasn't painting on my scope. I descended air carrier X from FL330 to FL210. I didn't see the limited data block (light transport X) which was under a full data block on my scope. Both aircraft came into conflict. Closest proximity was 1.2 mi and 800 ft. Note: I was unable to retrieve a full data block for light transport Y on my scope because the FAA is withholding that function of the computer.
Original NASA ASRS Text
Title: ZMA RADAR CTLR TOOK A POINTOUT ON A LEARJET WHO WAS IN ZMA AIRSPACE, DEVIATING AROUND WX, FROM A ZJX CTLR. AT THE SAME TIME THE ZMA CTLR WAS VECTORING AN L1011 AROUND THE SAME WX. THE ZMA CTLR LOST THE LIMITED DATA BLOCK ON THE LEARJET AND DSNDED THE L1011 THROUGH THE LEARJET ALT. THE L1011 GOT A TCASII RA AND FOLLOWED THE RA AND TOLD THE ZMA CTLR WHAT HE WAS DOING. THE L1011 WAS TURNED AND TOLD TO CLB, BUT LTSS OCCURRED.
Narrative: DUE TO TSTMS WE WERE DEVIATING W OF COURSE ON A 185 DEG HDG AT FL330. AS WE PASSED A POINT 50 MI W OF PIE, THE WX RADAR SHOWED THAT WE COULD TAKE A TURN TO THE E TOWARD MCO. I CALLED ZMA FOR THE TURN. MIAMI SAID TO MAINTAIN OUR 185 DEG HDG, BUT TO DSND TO FL210. THE CAPT BEGAN THE DSCNT. AT APPROX FL322 IN IMC WE GOT A TCASII RA TO CLB. I TOLD THE CAPT TO CLB. AS HE STARTED TO REVERSE THE DSCNT WE CONTINUED TO GET THE TCASII RA. BY THE TIME WE WERE ABLE TO GET THE PLANE CLBING WE HAD DSNDED TO FL317. ACCORDING TO THE TCASII THE OTHER ACFT PASSED DIRECTLY BENEATH US AT FL310. I TOLD MIAMI THAT WE HAD TFC DIRECTLY BELOW US, MIAMI THEN DIRECTED US TO TURN AND CLB BACK TO FL330. BOTTOM LINE: TCASII SAVED US! SUPPLEMENTAL INFO FROM ACN 344109: A DSCNT OF 1000 FPM WAS STARTED. AT APPROX FL328 TO FL329 THE TCASII GAVE A TA WITH TFC AT FL310 FOLLOWED IMMEDIATELY BY AN RA TO CLB. TCASII FINAL SHOWED A PLUS 700 FT CLOSURE TO CONFLICTING ACFT. CREW CALLED CTR AND ADVISED OF CLB AND WAS INSTRUCTED TO CLB BACK TO FL330 AND TURN 30 DEGS L. CONFLICTING ACFT APPEARED TO PASS DIRECTLY UNDERNEATH ON TCASII, NO VISUAL CONTACT DUE TO CLOUDS. FLT CONTINUED TO MCO AND LANDED WITH NO FURTHER NOTEWORTHY EVENTS. ZMA SUPVR STATED BY PHONE THAT THE CONFLICTING TFC WAS BEING HANDLED BY ZJX, HOWEVER, IT WAS IN ZMA AIRSPACE AND NO HDOF HAD BEEN MADE. SHE FURTHER STATED BY PHONE THAT THIS WAS A CONTINUING PROB BTWN THE 2 CTRS DURING WX DEVS AND HIGH TFC WORKLOADS. SUPPLEMENTAL INFO FROM ACN 344125: RECEIVED A POINTOUT FROM ZJX ON LTT X, A LEARJET, A LIMITED DATA BLOCK, CLBING TO FL310. LTT Y DEVIATED AROUND WX THAT WASN'T PAINTING ON MY SCOPE. I DSNDED ACR X FROM FL330 TO FL210. I DIDN'T SEE THE LIMITED DATA BLOCK (LTT X) WHICH WAS UNDER A FULL DATA BLOCK ON MY SCOPE. BOTH ACFT CAME INTO CONFLICT. CLOSEST PROX WAS 1.2 MI AND 800 FT. NOTE: I WAS UNABLE TO RETRIEVE A FULL DATA BLOCK FOR LTT Y ON MY SCOPE BECAUSE THE FAA IS WITHHOLDING THAT FUNCTION OF THE COMPUTER.
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.