Close proximity atx-light transport air carrier-light transport on a training flight.

Attributes
ACN	149349
Time
Date	199006
Day	Fri
Local Time Of Day	1801 To 2400
Place
Locale Reference	airport : bil
State Reference	MT
Altitude	msl bound lower : 6000 msl bound upper : 6000
Environment
Flight Conditions	Mixed
Light	Night
Aircraft 1
Controlling Facilities	artcc : zlc
Operator	common carrier : air taxi
Make Model Name	Light Transport
Flight Phase	descent : approach descent other
Flight Plan	IFR
Aircraft 2
Operator	common carrier : air carrier
Make Model Name	Light Transport, High Wing, 2 Turboprop Eng
Flight Phase	descent : approach
Flight Plan	VFR
Person 1
Affiliation	company : air taxi
Function	flight crew : single pilot
Qualification	pilot : atp
Experience	flight time last 90 days : 225 flight time total : 8000
ASRS Report	149349
Person 2
Affiliation	company : air carrier
Function	instruction : instructor
Qualification	pilot : atp
Events
Anomaly	conflict : nmac inflight encounter : vfr in imc non adherence : far
Independent Detector	other flight crewa
Resolutory Action	none taken : insufficient time
Consequence	Other
Miss Distance	horizontal : 0 vertical : 200
Supplementary
Primary Problem	Flight Crew Human Performance

Narrative:

I was going to bil on a mail flight and I was fir in IMC. There was an light transport Y with air carrier logo doing either pilot training or check ride, making numerous approachs to bil. Bil was reporting 8000' scattered and 20 mi visibility. Approach control and tower were closed for the night, and FSS was issuing advisories on tower frequency. I was cleared for the approach and descended to MEA (6000' MSL) and was still in clouds. At 11 DME from the airport center advised me of converging traffic 1 O'clock and 1 mi at 5700'. I said I was IMC. (It was the light transport Y on the 10 mi arc to its approach to 9L bil.) I flew out of the clouds at 10 DME at 6000' and the other aircraft was right there. I pulled back on the yoke and went back into the clouds. He passed right under me. He never did see me. Bil WX was not as good 10 west as it was at airport and the light transport did not have legal cloud sep.

Original NASA ASRS Text

Title: CLOSE PROX ATX-LTT ACR-LTT ON A TRAINING FLT.

Narrative: I WAS GOING TO BIL ON A MAIL FLT AND I WAS FIR IN IMC. THERE WAS AN LTT Y WITH ACR LOGO DOING EITHER PLT TRNING OR CHK RIDE, MAKING NUMEROUS APCHS TO BIL. BIL WAS RPTING 8000' SCATTERED AND 20 MI VISIBILITY. APCH CTL AND TWR WERE CLOSED FOR THE NIGHT, AND FSS WAS ISSUING ADVISORIES ON TWR FREQ. I WAS CLRED FOR THE APCH AND DSNDED TO MEA (6000' MSL) AND WAS STILL IN CLOUDS. AT 11 DME FROM THE ARPT CENTER ADVISED ME OF CONVERGING TFC 1 O'CLOCK AND 1 MI AT 5700'. I SAID I WAS IMC. (IT WAS THE LTT Y ON THE 10 MI ARC TO ITS APCH TO 9L BIL.) I FLEW OUT OF THE CLOUDS AT 10 DME AT 6000' AND THE OTHER ACFT WAS RIGHT THERE. I PULLED BACK ON THE YOKE AND WENT BACK INTO THE CLOUDS. HE PASSED RIGHT UNDER ME. HE NEVER DID SEE ME. BIL WX WAS NOT AS GOOD 10 W AS IT WAS AT ARPT AND THE LTT DID NOT HAVE LEGAL CLOUD SEP.

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.