Narrative:

We left kffo for egun with a fuel stop at kpbg. We were a charter flight for the DOD flying for the united nations. Our company departed us with the #1 communication radio on our MEL/cdl list from the USA for the united kingdom. When the aircraft was handed off from dublin control to london radar, we could send and receive ok. As we past wal VOR, the #2 communication radio became intermittent. We could hear other aircraft ok but london radar control became broken. We were given a turn to 360 degrees by a relay from air carrier Y flight. Between other aircraft relaying for ATC and broken contact with ATC. We found out that our aircraft was in conflict with another aircraft and london radar was calling it a near miss. We ended up on 121.5 guard frequency for the remainder of this flight until we could talk with mildenhall AFB, united kingdom. We had no problem on 123.2 or 122.55 VHF frequency. We entered the problem into our maintenance log. Maintenance was performed on the radios before the aircraft departed for africa. I feel that the MEL/cdl should not allow this type of operation. For international flight operation, both VHF communications should be in working order. The problem here is too liberal of a MEL.

Related reports:

Google
 

Original NASA ASRS Text

Title: LOSS OF ALL COM RADIOS.

Narrative: WE LEFT KFFO FOR EGUN WITH A FUEL STOP AT KPBG. WE WERE A CHARTER FLT FOR THE DOD FLYING FOR THE UNITED NATIONS. OUR COMPANY DEPARTED US WITH THE #1 COM RADIO ON OUR MEL/CDL LIST FROM THE USA FOR THE UNITED KINGDOM. WHEN THE ACFT WAS HANDED OFF FROM DUBLIN CTL TO LONDON RADAR, WE COULD SEND AND RECEIVE OK. AS WE PAST WAL VOR, THE #2 COM RADIO BECAME INTERMITTENT. WE COULD HEAR OTHER ACFT OK BUT LONDON RADAR CTL BECAME BROKEN. WE WERE GIVEN A TURN TO 360 DEGS BY A RELAY FROM ACR Y FLT. BTWN OTHER ACFT RELAYING FOR ATC AND BROKEN CONTACT WITH ATC. WE FOUND OUT THAT OUR ACFT WAS IN CONFLICT WITH ANOTHER ACFT AND LONDON RADAR WAS CALLING IT A NEAR MISS. WE ENDED UP ON 121.5 GUARD FREQ FOR THE REMAINDER OF THIS FLT UNTIL WE COULD TALK WITH MILDENHALL AFB, UNITED KINGDOM. WE HAD NO PROB ON 123.2 OR 122.55 VHF FREQ. WE ENTERED THE PROB INTO OUR MAINT LOG. MAINT WAS PERFORMED ON THE RADIOS BEFORE THE ACFT DEPARTED FOR AFRICA. I FEEL THAT THE MEL/CDL SHOULD NOT ALLOW THIS TYPE OF OP. FOR INTL FLT OP, BOTH VHF COMS SHOULD BE IN WORKING ORDER. THE PROB HERE IS TOO LIBERAL OF A MEL.

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.