Cpr C421, 1975 vintage, not equipped with permanent radio. Portable radio used by first officer. Battery dies. Loss of radio contact with ZHU.

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Attributes
ACN	359278
Time
Date	199701
Day	Fri
Local Time Of Day	1201 To 1800
Place
Locale Reference	atc facility : uva
State Reference	TX
Altitude	msl bound lower : 16000 msl bound upper : 16000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	artcc : zhu
Operator	general aviation : corporate
Make Model Name	Golden Eagle 421
Operating Under FAR Part	Part 91
Flight Phase	cruise other
Flight Plan	IFR
Person 1
Affiliation	Other
Function	flight crew : captain oversight : pic
Qualification	pilot : cfi pilot : commercial pilot : instrument
Experience	flight time last 90 days : 80 flight time total : 1400 flight time type : 400
ASRS Report	359278
Person 2
Affiliation	Other
Function	flight crew : first officer
Qualification	pilot : instrument pilot : commercial
Events
Anomaly	aircraft equipment problem : less severe non adherence : clearance non adherence : far non adherence : published procedure other anomaly other
Independent Detector	other controllera
Resolutory Action	flight crew : overcame equipment problem flight crew : became reoriented other
Consequence	Other
Supplementary
Primary Problem	Aircraft
Air Traffic Incident	Pilot Deviation other

Narrative:

Aircraft not equipped with permanently installed intercom. First officer was using his portable intercom. I commented that center had sure been quiet. He checked intercom battery and found it to be dead. He changed battery and I called center. Center said they'd been trying to call us for 20 mins and had been vectoring traffic around us. I explained situation and apologized. We had previously been cleared direct uva. We should have not used portable intercom and should have been operating a sterile flight deck.

Original NASA ASRS Text

Title: CPR C421, 1975 VINTAGE, NOT EQUIPPED WITH PERMANENT RADIO. PORTABLE RADIO USED BY FO. BATTERY DIES. LOSS OF RADIO CONTACT WITH ZHU.

Narrative: ACFT NOT EQUIPPED WITH PERMANENTLY INSTALLED INTERCOM. FO WAS USING HIS PORTABLE INTERCOM. I COMMENTED THAT CTR HAD SURE BEEN QUIET. HE CHKED INTERCOM BATTERY AND FOUND IT TO BE DEAD. HE CHANGED BATTERY AND I CALLED CTR. CTR SAID THEY'D BEEN TRYING TO CALL US FOR 20 MINS AND HAD BEEN VECTORING TFC AROUND US. I EXPLAINED SIT AND APOLOGIZED. WE HAD PREVIOUSLY BEEN CLRED DIRECT UVA. WE SHOULD HAVE NOT USED PORTABLE INTERCOM AND SHOULD HAVE BEEN OPERATING A STERILE FLT DECK.

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.