A PA31 pilot experienced frequency bleed through during a change from ARTCC to TRACON. This caused c...

Attributes
ACN	383489
Time
Date	199710
Day	Tue
Local Time Of Day	1801 To 2400
Place
Locale Reference	atc facility : pdk
State Reference	GA
Altitude	msl bound lower : 5000 msl bound upper : 5000
Environment
Flight Conditions	Mixed
Light	Night
Aircraft 1
Controlling Facilities	artcc : ztl tracon : atl
Operator	general aviation : personal
Make Model Name	PA-31T Cheyenne II
Operating Under FAR Part	Part 91
Flight Phase	cruise other descent other
Route In Use	enroute : on vectors
Flight Plan	IFR
Person 1
Affiliation	Other
Function	flight crew : single pilot
Qualification	pilot : private pilot : instrument
Experience	flight time last 90 days : 44 flight time total : 3100 flight time type : 700
ASRS Report	383489
Person 2
Affiliation	government : faa
Function	controller : approach
Qualification	controller : radar
Events
Anomaly	aircraft equipment problem : less severe other anomaly other
Independent Detector	other flight crewa
Resolutory Action	controller : issued new clearance none taken : detected after the fact other
Consequence	Other
Supplementary
Primary Problem	Aircraft
Air Traffic Incident	other

Narrative:

During transition from center to approach, center 134.8 instructed turn left to 090 degrees for resequencing. After approximately 3 hours 6 mins at 280 KT ground speed I had traveled further from pdk than would be anticipated and my radio sounded confused, it was like atl and approach were on 134.8. I switched to a second radio and had the same confusion. There was also considerable bleed on radio. I called atl on 134.8 and asked why I was being vectored so far and he responded he didn't know why I was heading 090 degrees. We talked for a min and he gave me direct pdk. I called back to inquire why this happened and he said I made a turn he didn't know about. I was still getting another controller talking on 134.8 so I finally asked what frequency the approach was talking to me on and he said 119.2, but I told him I was on 134.8 and he attempted to insist I was on 134.0 and that I had been handed off to 119.2. I never recall the handoff and I can't understand how I could have 134.8 on frequency and he was claiming I was on 119.2. Can't happen. I don't believe I ever acknowledged the handoff nor did they give it to me. I would like the tapes reviewed since a dangerous condition could have existed. Callback conversation with reporter revealed the following information: the reporter was flying his PA31T cheyenne ii when he experienced radio problems. He said that he could not understand how he could hear frequencies other than the one he had selected. He has not yet had the radios checked, but he has flown since without radio problems. He believes that the other controller who was bleeding through on frequency 134.8 had a radio problem. However, the reporter said that he was going to have the aircraft radios checked during the next 100 hour inspection. He said that the visibility at 5000 ft was very good and he saw no other traffic, but agreed that this would be a serious problem during IMC.

Original NASA ASRS Text

Title: A PA31 PLT EXPERIENCED FREQ BLEED THROUGH DURING A CHANGE FROM ARTCC TO TRACON. THIS CAUSED CONFUSION TO HIM AND, APPARENTLY, TO ONE OR MORE CTLRS. HOWEVER, THE APCH CTLR DETERMINED HIS POS AND DIRECTED HIM TO HIS DEST.

Narrative: DURING TRANSITION FROM CTR TO APCH, CTR 134.8 INSTRUCTED TURN L TO 090 DEGS FOR RESEQUENCING. AFTER APPROX 3 HRS 6 MINS AT 280 KT GND SPD I HAD TRAVELED FURTHER FROM PDK THAN WOULD BE ANTICIPATED AND MY RADIO SOUNDED CONFUSED, IT WAS LIKE ATL AND APCH WERE ON 134.8. I SWITCHED TO A SECOND RADIO AND HAD THE SAME CONFUSION. THERE WAS ALSO CONSIDERABLE BLEED ON RADIO. I CALLED ATL ON 134.8 AND ASKED WHY I WAS BEING VECTORED SO FAR AND HE RESPONDED HE DIDN'T KNOW WHY I WAS HDG 090 DEGS. WE TALKED FOR A MIN AND HE GAVE ME DIRECT PDK. I CALLED BACK TO INQUIRE WHY THIS HAPPENED AND HE SAID I MADE A TURN HE DIDN'T KNOW ABOUT. I WAS STILL GETTING ANOTHER CTLR TALKING ON 134.8 SO I FINALLY ASKED WHAT FREQ THE APCH WAS TALKING TO ME ON AND HE SAID 119.2, BUT I TOLD HIM I WAS ON 134.8 AND HE ATTEMPTED TO INSIST I WAS ON 134.0 AND THAT I HAD BEEN HANDED OFF TO 119.2. I NEVER RECALL THE HDOF AND I CAN'T UNDERSTAND HOW I COULD HAVE 134.8 ON FREQ AND HE WAS CLAIMING I WAS ON 119.2. CAN'T HAPPEN. I DON'T BELIEVE I EVER ACKNOWLEDGED THE HDOF NOR DID THEY GIVE IT TO ME. I WOULD LIKE THE TAPES REVIEWED SINCE A DANGEROUS CONDITION COULD HAVE EXISTED. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO: THE RPTR WAS FLYING HIS PA31T CHEYENNE II WHEN HE EXPERIENCED RADIO PROBS. HE SAID THAT HE COULD NOT UNDERSTAND HOW HE COULD HEAR FREQUENCIES OTHER THAN THE ONE HE HAD SELECTED. HE HAS NOT YET HAD THE RADIOS CHECKED, BUT HE HAS FLOWN SINCE WITHOUT RADIO PROBS. HE BELIEVES THAT THE OTHER CTLR WHO WAS BLEEDING THROUGH ON FREQ 134.8 HAD A RADIO PROB. HOWEVER, THE RPTR SAID THAT HE WAS GOING TO HAVE THE ACFT RADIOS CHECKED DURING THE NEXT 100 HR INSPECTION. HE SAID THAT THE VISIBILITY AT 5000 FT WAS VERY GOOD AND HE SAW NO OTHER TRAFFIC, BUT AGREED THAT THIS WOULD BE A SERIOUS PROB DURING IMC.

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.

A PA31 pilot experienced frequency bleed through during a change from ARTCC to TRACON. This caused confusion to him and, apparently, to one or more controllers. However, the approach controller determined his position and directed him to his destination.