Narrative:

The flight from san juan (tjsj) to bdl completed with no known communications problems. At the ramp, a ramp agent asked the crew to check for a stuck microphone. This was done and none was found in the aircraft. On taxi out all radios operated normally. On the taxiway the tower asked the crew to check for a stuck microphone on ground frequency. The 3 radios onboard were checked. It was determined that #2 radio might be causing interference intermittently. It was selected to another frequency and it appeared to operate normally. It was decided that #2 radio would not be used and it would be switched out of the local frequencys. The tower was advised that the flight would continue and requested taxi clearance to the active runway. The #1 and #3 radios were to be used for the remainder of the flight. No radio problems were noted using #3 radio. The flight was cleared to take off and was given a heading and 4000 ft initial altitude, and a departure control frequency. After takeoff no communications were possible on the assigned frequency. Contact was attempted on radio #1 and #3 with no success. Tower frequency was again selected on both radios with no success. Ground control frequency was also selected with no success. Again departure control frequency was selected and reception was very weak and intermittent. Frequency 121.5 and 7600 transponder code were selected. Contact was attempted but it appeared the controller was not receiving our xmissions. Reception on 121.5 was loud and clear. Controller xmissions were acknowledged with aircraft turns and with identify on the transponder, the flight was vectored to bradley airport and cleared to land in this manner. After landing during taxi-in the radios were checked and with ground control and all 3 radios operated normally. The radios were checked by a technician and #2 radio was replaced. No other malfunctions were found by the technician. All radios operated normally on a subsequent flight. Supplemental information from acn 371646: tower told us to change to departure frequency. We did and lost all communications, could not get ground, tower, departure center on any of the radios (3) available. We climbed to assigned altitude on heading. Finally able to receive ATC on guard frequency 121.5 only receive could not reply. Acknowledged by squawk identify. Received vectors and clearance to land bdl. Upon clearing runway all radios resumed normal operation, maintenance removed and replaced #2 communication receive/transmit and sprayed contact dryer on connections. Flight again departed bdl with no further discrepancies.

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Original NASA ASRS Text

Title: A DC8 DEPARTING BDL, CT, LOSES ALL OF ITS RADIOS SHORTLY AFTER LIFT-OFF. FLC RETURNS TO LAND FOR REPAIR OF ACFT RADIO.

Narrative: THE FLT FROM SAN JUAN (TJSJ) TO BDL COMPLETED WITH NO KNOWN COMS PROBS. AT THE RAMP, A RAMP AGENT ASKED THE CREW TO CHK FOR A STUCK MIKE. THIS WAS DONE AND NONE WAS FOUND IN THE ACFT. ON TAXI OUT ALL RADIOS OPERATED NORMALLY. ON THE TXWY THE TWR ASKED THE CREW TO CHK FOR A STUCK MIKE ON GND FREQ. THE 3 RADIOS ONBOARD WERE CHKED. IT WAS DETERMINED THAT #2 RADIO MIGHT BE CAUSING INTERFERENCE INTERMITTENTLY. IT WAS SELECTED TO ANOTHER FREQ AND IT APPEARED TO OPERATE NORMALLY. IT WAS DECIDED THAT #2 RADIO WOULD NOT BE USED AND IT WOULD BE SWITCHED OUT OF THE LCL FREQS. THE TWR WAS ADVISED THAT THE FLT WOULD CONTINUE AND REQUESTED TAXI CLRNC TO THE ACTIVE RWY. THE #1 AND #3 RADIOS WERE TO BE USED FOR THE REMAINDER OF THE FLT. NO RADIO PROBS WERE NOTED USING #3 RADIO. THE FLT WAS CLRED TO TAKE OFF AND WAS GIVEN A HEADING AND 4000 FT INITIAL ALT, AND A DEP CTL FREQ. AFTER TKOF NO COMS WERE POSSIBLE ON THE ASSIGNED FREQ. CONTACT WAS ATTEMPTED ON RADIO #1 AND #3 WITH NO SUCCESS. TWR FREQ WAS AGAIN SELECTED ON BOTH RADIOS WITH NO SUCCESS. GND CTL FREQ WAS ALSO SELECTED WITH NO SUCCESS. AGAIN DEP CTL FREQ WAS SELECTED AND RECEPTION WAS VERY WEAK AND INTERMITTENT. FREQ 121.5 AND 7600 XPONDER CODE WERE SELECTED. CONTACT WAS ATTEMPTED BUT IT APPEARED THE CTLR WAS NOT RECEIVING OUR XMISSIONS. RECEPTION ON 121.5 WAS LOUD AND CLR. CTLR XMISSIONS WERE ACKNOWLEDGED WITH ACFT TURNS AND WITH IDENT ON THE XPONDER, THE FLT WAS VECTORED TO BRADLEY ARPT AND CLRED TO LAND IN THIS MANNER. AFTER LNDG DURING TAXI-IN THE RADIOS WERE CHKED AND WITH GND CTL AND ALL 3 RADIOS OPERATED NORMALLY. THE RADIOS WERE CHKED BY A TECHNICIAN AND #2 RADIO WAS REPLACED. NO OTHER MALFUNCTIONS WERE FOUND BY THE TECHNICIAN. ALL RADIOS OPERATED NORMALLY ON A SUBSEQUENT FLT. SUPPLEMENTAL INFO FROM ACN 371646: TWR TOLD US TO CHANGE TO DEP FREQ. WE DID AND LOST ALL COMS, COULD NOT GET GND, TWR, DEP CTR ON ANY OF THE RADIOS (3) AVAILABLE. WE CLBED TO ASSIGNED ALT ON HEADING. FINALLY ABLE TO RECEIVE ATC ON GUARD FREQ 121.5 ONLY RECEIVE COULD NOT REPLY. ACKNOWLEDGED BY SQUAWK IDENT. RECEIVED VECTORS AND CLRNC TO LAND BDL. UPON CLRING RWY ALL RADIOS RESUMED NORMAL OP, MAINT REMOVED AND REPLACED #2 COM RECEIVE/XMIT AND SPRAYED CONTACT DRYER ON CONNECTIONS. FLT AGAIN DEPARTED BDL WITH NO FURTHER DISCREPANCIES.

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.