Near midair collision.

Attributes
ACN	182060
Time
Date	199106
Day	Mon
Local Time Of Day	1201 To 1800
Place
Locale Reference	atc facility : mod airport : sck
State Reference	CA
Altitude	msl bound lower : 5500 msl bound upper : 5600
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : sck
Operator	common carrier : air carrier
Make Model Name	Light Transport, Low Wing, 2 Turboprop Eng
Flight Phase	descent other
Route In Use	enroute : direct
Flight Plan	IFR
Aircraft 2
Make Model Name	Small Aircraft, Low Wing, 2 Eng, Retractable Gear
Flight Phase	cruise 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 : 120 flight time total : 3700 flight time type : 800
ASRS Report	182060
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : commercial pilot : instrument
Events
Anomaly	conflict : nmac non adherence : far
Independent Detector	other controllera other flight crewa
Resolutory Action	flight crew : took evasive action
Consequence	other
Miss Distance	horizontal : 150 vertical : 75
Supplementary
Primary Problem	Flight Crew Human Performance

Narrative:

While on an IFR flight plan in VMC conditions, stockton approach issued a descent from 7000' to 5000'. At 5600' he issued a traffic advisory for traffic in our 1-2 O'clock position, 5 mi, altitude 5500'. After looking and then responding 'traffic not in sight' an small aircraft twin was at our 1 O'clock 1/8 mi. My first officer saw the aircraft sligtly before I and banked the aircraft left into a 40 degree bank, missing the small aircraft by approximately 50' vertical and 150' horizontal. Afterwards we asked the controller if he still had an altitude on the small aircraft and told him that was a close call. An earlier call and one with more accuracy would have given us more time to respond.

Original NASA ASRS Text

Title: NMAC.

Narrative: WHILE ON AN IFR FLT PLAN IN VMC CONDITIONS, STOCKTON APCH ISSUED A DSNT FROM 7000' TO 5000'. AT 5600' HE ISSUED A TFC ADVISORY FOR TFC IN OUR 1-2 O'CLOCK POS, 5 MI, ALT 5500'. AFTER LOOKING AND THEN RESPONDING 'TFC NOT IN SIGHT' AN SMA TWIN WAS AT OUR 1 O'CLOCK 1/8 MI. MY F/O SAW THE ACFT SLIGTLY BEFORE I AND BANKED THE ACFT L INTO A 40 DEG BANK, MISSING THE SMA BY APPROX 50' VERT AND 150' HORIZ. AFTERWARDS WE ASKED THE CTLR IF HE STILL HAD AN ALT ON THE SMA AND TOLD HIM THAT WAS A CLOSE CALL. AN EARLIER CALL AND ONE WITH MORE ACCURACY WOULD HAVE GIVEN US MORE TIME TO RESPOND.

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.