Military C141 had near midair collision with VFR BF35 while on approach. See and avoid concept.

Attributes
ACN	261284
Time
Date	199401
Day	Tue
Local Time Of Day	0601 To 1200
Place
Locale Reference	atc facility : tcm
State Reference	WA
Altitude	msl bound lower : 1700 msl bound upper : 2000
Environment
Flight Conditions	Marginal
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : sea
Operator	other
Make Model Name	Starlifter (C141)
Operating Under FAR Part	other : other
Flight Phase	descent : approach
Flight Plan	IFR
Aircraft 2
Operator	general aviation : personal
Make Model Name	Bonanza 35
Operating Under FAR Part	Part 91
Flight Phase	cruise other
Flight Plan	VFR
Person 1
Affiliation	government : faa
Function	controller : approach
Qualification	controller : radar
Experience	controller radar : 9
ASRS Report	261284
Person 2
Affiliation	government : military
Function	flight crew : captain oversight : pic
Qualification	pilot : military
Events
Anomaly	conflict : nmac non adherence : far
Independent Detector	other controllera other flight crewa
Resolutory Action	none taken : anomaly accepted
Consequence	faa : reviewed incident with flight crew
Miss Distance	horizontal : 0 vertical : 300
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

During a period of moderate traffic I was vectoring a C141 to a TACAN approach to runway 16 at tcm. As I turned the act onto final I called traffic at 1 O'clock, 1 mi, eastbound, altitude indicates 1700 ft. The C141 was level at 2000 ft. The pilot advised he was searching. Upon completion of his approach the pilot returned O the radar approach pattern for another approach. He stated that the traffic I had called was very close and appeared to be 'scud running.' he later described the aircraft as a v-tail bonanza. He stated that the aircraft had passed directly below him without proper cloud clearance for a VFR aircraft.

Original NASA ASRS Text

Title: MIL C141 HAD NMAC WITH VFR BF35 WHILE ON APCH. SEE AND AVOID CONCEPT.

Narrative: DURING A PERIOD OF MODERATE TFC I WAS VECTORING A C141 TO A TACAN APCH TO RWY 16 AT TCM. AS I TURNED THE ACT ONTO FINAL I CALLED TFC AT 1 O'CLOCK, 1 MI, EBOUND, ALT INDICATES 1700 FT. THE C141 WAS LEVEL AT 2000 FT. THE PLT ADVISED HE WAS SEARCHING. UPON COMPLETION OF HIS APCH THE PLT RETURNED O THE RADAR APCH PATTERN FOR ANOTHER APCH. HE STATED THAT THE TFC I HAD CALLED WAS VERY CLOSE AND APPEARED TO BE 'SCUD RUNNING.' HE LATER DESCRIBED THE ACFT AS A V-TAIL BONANZA. HE STATED THAT THE ACFT HAD PASSED DIRECTLY BELOW HIM WITHOUT PROPER CLOUD CLRNC FOR A VFR ACFT.

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.