Medium large transport aircraft during descent lost radio contact with center as did other aircraft. When controller back on the air cleared reporter aircraft to level at higher altitude due to traffic conflict.

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Attributes
ACN	369060
Time
Date	199705
Day	Sun
Local Time Of Day	1201 To 1800
Place
Locale Reference	atc facility : fgt
State Reference	MN
Altitude	msl bound lower : 12000 msl bound upper : 12000
Environment
Flight Conditions	IMC
Light	Daylight
Aircraft 1
Controlling Facilities	tower : gjt
Operator	common carrier : air carrier
Make Model Name	Commercial Fixed Wing
Operating Under FAR Part	Part 121
Flight Phase	cruise other descent other
Route In Use	arrival other arrival star : star enroute airway : zmp enroute other
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp pilot : commercial pilot : flight engineer pilot : instrument
Experience	flight time last 90 days : 150 flight time total : 7200 flight time type : 200
ASRS Report	369060
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : instrument pilot : commercial
Events
Anomaly	other anomaly other
Independent Detector	other controllera
Resolutory Action	controller : issued new clearance other
Consequence	Other
Supplementary
Primary Problem	ATC Human Performance
Air Traffic Incident	other

Narrative:

During descent to cross banni intersection at 11000 ft, at least 5 aircraft attempted to contact ZMP to no avail. At approximately 15000 ft our flight was instructed to stop descent at 12000 ft. At 12000 ft we observed traffic on TCASII 1000 ft below as we slowed to 250 KTS (as instructed). Center inquired as to our reception of their xmissions which were loud and clear. I believe during our descent a traffic conflict developed along with a communication (transmission) problem with ZMP. Had this problem not been resolved prior to us descending to our original clearance altitude, a potential traffic conflict would have resulted.

Original NASA ASRS Text

Title: MLG ACFT DURING DSCNT LOST RADIO CONTACT WITH CTR AS DID OTHER ACFT. WHEN CTLR BACK ON THE AIR CLRED RPTR ACFT TO LEVEL AT HIGHER ALT DUE TO TFC CONFLICT.

Narrative: DURING DSCNT TO CROSS BANNI INTXN AT 11000 FT, AT LEAST 5 ACFT ATTEMPTED TO CONTACT ZMP TO NO AVAIL. AT APPROX 15000 FT OUR FLT WAS INSTRUCTED TO STOP DSCNT AT 12000 FT. AT 12000 FT WE OBSERVED TFC ON TCASII 1000 FT BELOW AS WE SLOWED TO 250 KTS (AS INSTRUCTED). CTR INQUIRED AS TO OUR RECEPTION OF THEIR XMISSIONS WHICH WERE LOUD AND CLR. I BELIEVE DURING OUR DSCNT A TFC CONFLICT DEVELOPED ALONG WITH A COM (XMISSION) PROB WITH ZMP. HAD THIS PROB NOT BEEN RESOLVED PRIOR TO US DSNDING TO OUR ORIGINAL CLRNC ALT, A POTENTIAL TFC CONFLICT WOULD HAVE RESULTED.

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.