Narrative:

First, ZMA told us to fly 200 degree heading direct cayo largo VOR and to contact havana center on frequency 124.55. After numerous attempts of establishing 2-WAY radio communications with havana center, without any response, we re-established communications with ZMA, and they advised us to try on frequency 135.1. Upon numerous attempts, again there was no response. So, once again we returned to ZMA. They advised us to try one more time on frequency 124.55. Havana center finally responded, and communications were established. We reported our current 200 degree heading and FL370. Havana center then responded 'radar contact maintain FL370.' following passage of cayo largo VOR, we joined airway G448 as per our flight plan route. Radio communication was then established with kingston center 10 mins prior to the fir (atuvi). Upon initial contact with kingston center, we were advised to contact havana center on 124.55. We tried, and there was no response again after several attempts. The crew proceeded to obtain numerous frequencys from the high altitude en route chart which are as follows, 124.55, 133.7 and 120.25. Communications were finally established again on 120.25, which is a frequency designated for a different sector of havana airspace. We were advised by the controller that miami was contacted due to a possible infraction of airspace on a prohibited area. This particular controller indicated that they (havana center) and 2 other air carrier's were calling us on frequency 124.55. Since we have 2 radios in the airplane, this frequency was monitored at all times, and no such radio xmissions were attempted, neither by havana center nor 2 other air carrier's. The flight continued to flight planned destination uneventfully.

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Original NASA ASRS Text

Title: AN AIR CARGO FREIGHTER IS ALLEGED TO HAVE ENTERED THE CLASS A OF HAVANA CTL WITHOUT ESTABLISHING RADIO CONTACT AFTER REPEATED ATTEMPTS ON MULTIPLE FREQS BY THE FLC ON A HDOF FROM ZMA, FL.

Narrative: FIRST, ZMA TOLD US TO FLY 200 DEG HDG DIRECT CAYO LARGO VOR AND TO CONTACT HAVANA CTR ON FREQ 124.55. AFTER NUMEROUS ATTEMPTS OF ESTABLISHING 2-WAY RADIO COMS WITH HAVANA CTR, WITHOUT ANY RESPONSE, WE RE-ESTABLISHED COMS WITH ZMA, AND THEY ADVISED US TO TRY ON FREQ 135.1. UPON NUMEROUS ATTEMPTS, AGAIN THERE WAS NO RESPONSE. SO, ONCE AGAIN WE RETURNED TO ZMA. THEY ADVISED US TO TRY ONE MORE TIME ON FREQ 124.55. HAVANA CTR FINALLY RESPONDED, AND COMS WERE ESTABLISHED. WE RPTED OUR CURRENT 200 DEG HDG AND FL370. HAVANA CTR THEN RESPONDED 'RADAR CONTACT MAINTAIN FL370.' FOLLOWING PASSAGE OF CAYO LARGO VOR, WE JOINED AIRWAY G448 AS PER OUR FLT PLAN RTE. RADIO COM WAS THEN ESTABLISHED WITH KINGSTON CTR 10 MINS PRIOR TO THE FIR (ATUVI). UPON INITIAL CONTACT WITH KINGSTON CTR, WE WERE ADVISED TO CONTACT HAVANA CTR ON 124.55. WE TRIED, AND THERE WAS NO RESPONSE AGAIN AFTER SEVERAL ATTEMPTS. THE CREW PROCEEDED TO OBTAIN NUMEROUS FREQS FROM THE HIGH ALT ENRTE CHART WHICH ARE AS FOLLOWS, 124.55, 133.7 AND 120.25. COMS WERE FINALLY ESTABLISHED AGAIN ON 120.25, WHICH IS A FREQ DESIGNATED FOR A DIFFERENT SECTOR OF HAVANA AIRSPACE. WE WERE ADVISED BY THE CTLR THAT MIAMI WAS CONTACTED DUE TO A POSSIBLE INFRACTION OF AIRSPACE ON A PROHIBITED AREA. THIS PARTICULAR CTLR INDICATED THAT THEY (HAVANA CTR) AND 2 OTHER ACR'S WERE CALLING US ON FREQ 124.55. SINCE WE HAVE 2 RADIOS IN THE AIRPLANE, THIS FREQ WAS MONITORED AT ALL TIMES, AND NO SUCH RADIO XMISSIONS WERE ATTEMPTED, NEITHER BY HAVANA CTR NOR 2 OTHER ACR'S. THE FLT CONTINUED TO FLT PLANNED DEST UNEVENTFULLY.

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.