Narrative:

Frequency 128.9, FL310, ATC facility: lisbon control. Location: ocean, past dirma. Near lisbon after coasting out, approximately 40 mins prior to oceanic entry point and in VHF contact with lisbon and HF with santa maria, I received a HF SELCAL from santa maria to contact lisbon on 128.9. No contact initially on #1 VHF. Recycled frequency selector and retried -- contact established. Lisbon control upset and indicated unable to contact us for 5 mins. I was unable to determine cause. Radio operated normally thereafter and no other abnormality noted.

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Original NASA ASRS Text

Title: A B767-300 FLC IS CALLED BY SANTA MARIA ON HIGH FREQ RADIO TO CONTACT LISBON CTR ON VHF FREQ. THE FLT WAS OCEANIC, PAST DIRMA INTXN, ENRTE TO MIA.

Narrative: FREQ 128.9, FL310, ATC FACILITY: LISBON CTL. LOCATION: OCEAN, PAST DIRMA. NEAR LISBON AFTER COASTING OUT, APPROX 40 MINS PRIOR TO OCEANIC ENTRY POINT AND IN VHF CONTACT WITH LISBON AND HF WITH SANTA MARIA, I RECEIVED A HF SELCAL FROM SANTA MARIA TO CONTACT LISBON ON 128.9. NO CONTACT INITIALLY ON #1 VHF. RECYCLED FREQ SELECTOR AND RETRIED -- CONTACT ESTABLISHED. LISBON CTL UPSET AND INDICATED UNABLE TO CONTACT US FOR 5 MINS. I WAS UNABLE TO DETERMINE CAUSE. RADIO OPERATED NORMALLY THEREAFTER AND NO OTHER ABNORMALITY NOTED.

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.