Close proximity GA-small aircraft commuter-small transport southwest of bil.

Attributes
ACN	94101
Time
Date	198808
Day	Thu
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : bil
State Reference	MT
Altitude	msl bound lower : 11500 msl bound upper : 11500
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : bil
Operator	general aviation : personal
Make Model Name	Small Aircraft, High Wing, 1 Eng, Fixed Gear
Flight Phase	cruise other
Flight Plan	VFR
Aircraft 2
Operator	common carrier : air carrier
Make Model Name	Small Transport
Flight Phase	climbout : intermediate altitude
Flight Plan	IFR
Person 1
Affiliation	Other
Function	flight crew : single pilot
Qualification	pilot : commercial
Experience	flight time last 90 days : 40 flight time total : 3000
ASRS Report	94101
Person 2
Affiliation	government : faa
Function	controller : approach
Qualification	controller : radar
Events
Anomaly	conflict : nmac
Independent Detector	other flight crewa
Resolutory Action	flight crew : took evasive action
Consequence	faa : reviewed incident with flight crew
Miss Distance	unspecified : 400
Supplementary
Primary Problem	ATC Human Performance

Narrative:

I had contacted approach about 3 to 5 min prior and they gave me a transponder code and asked altitude which I replied 11500'. They reported me 17 mi southwest. The small transport was first viewed in a steep climb from about 10 O'clock and about 1000' below. As soon as I understood its direction, I abruptly turned to the left and the small transport passed very close to my right. I called approach and reported the near miss and he said he was sorry and apologized, and he said he thought I had said 7500'. I did not know of this sort of form until an air safety meeting held last night at missoula by the AOPA, FAA.

Original NASA ASRS Text

Title: CLOSE PROX GA-SMA COMMUTER-SMT SOUTHWEST OF BIL.

Narrative: I HAD CONTACTED APCH ABOUT 3 TO 5 MIN PRIOR AND THEY GAVE ME A TRANSPONDER CODE AND ASKED ALT WHICH I REPLIED 11500'. THEY RPTED ME 17 MI SW. THE SMT WAS FIRST VIEWED IN A STEEP CLB FROM ABOUT 10 O'CLOCK AND ABOUT 1000' BELOW. AS SOON AS I UNDERSTOOD ITS DIRECTION, I ABRUPTLY TURNED TO THE LEFT AND THE SMT PASSED VERY CLOSE TO MY RIGHT. I CALLED APCH AND RPTED THE NEAR MISS AND HE SAID HE WAS SORRY AND APOLOGIZED, AND HE SAID HE THOUGHT I HAD SAID 7500'. I DID NOT KNOW OF THIS SORT OF FORM UNTIL AN AIR SAFETY MEETING HELD LAST NIGHT AT MISSOULA BY THE AOPA, FAA.

Data retrieved from NASA's ASRS site as of August 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.