A C150 pilot loses radio contact with phx approach controller while traversing the phx class B in a ...

Attributes
ACN	419510
Time
Date	199811
Day	Mon
Local Time Of Day	1801 To 2400
Place
Locale Reference	atc facility : phx
State Reference	AZ
Altitude	msl bound lower : 3500 msl bound upper : 3500
Environment
Flight Conditions	VMC
Light	Night
Aircraft 1
Operator	general aviation : personal
Make Model Name	Cessna 150
Operating Under FAR Part	Part 91
Flight Phase	cruise other
Route In Use	enroute : direct
Flight Plan	None
Person 1
Affiliation	Other
Function	flight crew : single pilot
Experience	flight time last 90 days : 100 flight time total : 2200 flight time type : 500
ASRS Report	419510
Person 2
Affiliation	government : faa
Function	controller : approach
Events
Anomaly	aircraft equipment problem : less severe non adherence : far non adherence : clearance other anomaly other
Independent Detector	other controllera other flight crewa
Resolutory Action	none taken : detected after the fact
Consequence	Other
Supplementary
Air Traffic Incident	Pilot Deviation

Narrative:

During VFR transition through class B south to north communication was lost for approximately 4-5 mins due to my #1 communication radio knob being turned down too low. This was an inadvertent problem due to a loose knob and no index mark on the knob. As soon as I noticed no audio on the communication, I was able to turn the volume back up, I did not inform ATC at that time that I was able to hear again, and was not called by ATC again until I requested a frequency change. At this point ATC informed me that he had been trying to call me and was not very happy with the situation. Radar service was terminated with no other problems. I have since tightened and indexed the #1 communication knob and will forever be very diligent in monitoring communications.

Original NASA ASRS Text

Title: A C150 PLT LOSES RADIO CONTACT WITH PHX APCH CTLR WHILE TRAVERSING THE PHX CLASS B IN A NIGHT OP.

Narrative: DURING VFR TRANSITION THROUGH CLASS B S TO N COM WAS LOST FOR APPROX 4-5 MINS DUE TO MY #1 COM RADIO KNOB BEING TURNED DOWN TOO LOW. THIS WAS AN INADVERTENT PROB DUE TO A LOOSE KNOB AND NO INDEX MARK ON THE KNOB. AS SOON AS I NOTICED NO AUDIO ON THE COM, I WAS ABLE TO TURN THE VOLUME BACK UP, I DID NOT INFORM ATC AT THAT TIME THAT I WAS ABLE TO HEAR AGAIN, AND WAS NOT CALLED BY ATC AGAIN UNTIL I REQUESTED A FREQ CHANGE. AT THIS POINT ATC INFORMED ME THAT HE HAD BEEN TRYING TO CALL ME AND WAS NOT VERY HAPPY WITH THE SIT. RADAR SVC WAS TERMINATED WITH NO OTHER PROBS. I HAVE SINCE TIGHTENED AND INDEXED THE #1 COM KNOB AND WILL FOREVER BE VERY DILIGENT IN MONITORING COMS.

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 C150 pilot loses radio contact with phx approach controller while traversing the phx class B in a night operation.