Close proximity commuter-small transport GA-small aircraft both on V195 opposite direction.

Attributes
ACN	160274
Time
Date	199010
Day	Tue
Local Time Of Day	1201 To 1800
Place
Locale Reference	atc facility : sjc
State Reference	CA
Altitude	msl bound lower : 5000 msl bound upper : 5500
Environment
Flight Conditions	VMC
Light	Dusk
Aircraft 1
Operator	common carrier : air carrier
Make Model Name	Small Transport, Low Wing, 2 Turboprop Eng
Flight Phase	cruise other
Route In Use	enroute airway : v195
Flight Plan	IFR
Aircraft 2
Make Model Name	Small Transport, Low Wing, 2 Turboprop Eng
Flight Phase	descent other
Flight Plan	VFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Experience	flight time last 90 days : 200 flight time total : 10500 flight time type : 2500
ASRS Report	160274
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : atp
Events
Anomaly	conflict : nmac
Independent Detector	other flight crewa
Resolutory Action	flight crew : took evasive action
Consequence	Other
Miss Distance	horizontal : 300 vertical : 0
Supplementary
Primary Problem	Flight Crew Human Performance

Narrative:

Flight sjc-sck at cruise altitude 5000' MSL. Bay approach gave traffic 12 O'clock, 5500' opp direction. We saw an aircraft above us, thought that was our traffic, then saw small aircraft Y, same altitude at 12 O'clock. Took evasive action. Missed by about 300' horizontal. Queried bay approach: 'what altitude was that small aircraft Y?' he said 5500', but was descending. If bay had told us first the aircraft was descending, we'd have had a better chance.

Original NASA ASRS Text

Title: CLOSE PROX COMMUTER-SMT GA-SMA BOTH ON V195 OPPOSITE DIRECTION.

Narrative: FLT SJC-SCK AT CRUISE ALT 5000' MSL. BAY APCH GAVE TFC 12 O'CLOCK, 5500' OPP DIRECTION. WE SAW AN ACFT ABOVE US, THOUGHT THAT WAS OUR TFC, THEN SAW SMA Y, SAME ALT AT 12 O'CLOCK. TOOK EVASIVE ACTION. MISSED BY ABOUT 300' HORIZ. QUERIED BAY APCH: 'WHAT ALT WAS THAT SMA Y?' HE SAID 5500', BUT WAS DSNDING. IF BAY HAD TOLD US FIRST THE ACFT WAS DSNDING, WE'D HAVE HAD A BETTER CHANCE.

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.