BE1900 crew had radio failure in ZDV class a airspace.

Attributes
ACN	481170
Time
Date	200008
Day	Mon
Local Time Of Day	0601 To 1200
Place
Locale Reference	atc facility : zdv.artcc
State Reference	CO
Altitude	msl single value : 22000
Environment
Flight Conditions	VMC
Light	Dawn
Aircraft 1
Controlling Facilities	artcc : zdv.artcc
Operator	common carrier : air carrier
Make Model Name	Beech 1900
Operating Under FAR Part	Part 135
Flight Phase	cruise : level
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : cfi pilot : commercial pilot : atp
Experience	flight time last 90 days : 300 flight time total : 2600 flight time type : 1000
ASRS Report	481170
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : commercial pilot : instrument pilot : multi engine
Events
Anomaly	aircraft equipment problem : less severe other anomaly other
Independent Detector	atc equipment : conflict alert atc equipment other atc equipment : 2 aircraft equipment : tcas aircraft equipment other aircraft equipment : 1 other controllera other controllerb
Consequence	other
Supplementary
Problem Areas	Aircraft
Primary Problem	Aircraft

Narrative:

En route from riw to den, our #1 communication radio stopped receiving. We had no xmissions which prompted us to investigate why. Realizing our #1 radio was not working, we switched to our #2 and regained radio contact. No deviation from our course occurred.

Original NASA ASRS Text

Title: BE1900 CREW HAD RADIO FAILURE IN ZDV CLASS A AIRSPACE.

Narrative: ENRTE FROM RIW TO DEN, OUR #1 COM RADIO STOPPED RECEIVING. WE HAD NO XMISSIONS WHICH PROMPTED US TO INVESTIGATE WHY. REALIZING OUR #1 RADIO WAS NOT WORKING, WE SWITCHED TO OUR #2 AND REGAINED RADIO CONTACT. NO DEV FROM OUR COURSE OCCURRED.

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.