ATC equipment procedure radio ongoing problem.

Attributes
ACN	241103
Time
Date	199305
Day	Fri
Local Time Of Day	1201 To 1800
Place
Locale Reference	atc facility : huf
State Reference	IN
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : huf tracon : huf
Operator	general aviation : corporate
Make Model Name	Small Transport, Low Wing, 2 Turboprop Eng
Route In Use	enroute : direct
Flight Plan	IFR
Aircraft 2
Operator	general aviation : personal
Make Model Name	Small Transport, Low Wing, 2 Recip Eng
Route In Use	enroute : direct
Flight Plan	IFR
Person 1
Affiliation	government : faa
Function	controller : approach
Qualification	controller : radar
ASRS Report	241103
Person 2
Affiliation	Other
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Events
Anomaly	other anomaly other
Independent Detector	other controllera
Resolutory Action	none taken : unable
Consequence	Other
Supplementary
Air Traffic Incident	other
Situations
ATC Facility	other physical facility

Narrative:

After resolving a conflict between cpr X and small transport Y at the same altitude on converging courses, the wescom 921 communication (ATC) system failed resulting in the complete loss of communication with the 2 aircraft. This report is submitted to draw attention to the potential unsafe situation that may have occurred if the system had failed a few mins early. Had the system failed only 2 mins earlier, the 2 aircraft would have been at the same altitude when their flight courses merged.

Original NASA ASRS Text

Title: ATC EQUIP PROC RADIO ONGOING PROB.

Narrative: AFTER RESOLVING A CONFLICT BTWN CPR X AND SMT Y AT THE SAME ALT ON CONVERGING COURSES, THE WESCOM 921 COM (ATC) SYS FAILED RESULTING IN THE COMPLETE LOSS OF COM WITH THE 2 ACFT. THIS RPT IS SUBMITTED TO DRAW ATTN TO THE POTENTIAL UNSAFE SIT THAT MAY HAVE OCCURRED IF THE SYS HAD FAILED A FEW MINS EARLY. HAD THE SYS FAILED ONLY 2 MINS EARLIER, THE 2 ACFT WOULD HAVE BEEN AT THE SAME ALT WHEN THEIR FLT COURSES MERGED.

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.