On approach into ont had near midair collision with small aircraft operating VFR.

Attributes
ACN	92704
Time
Date	198808
Day	Mon
Local Time Of Day	0601 To 1200
Place
Locale Reference	atc facility : pdz airport : ont
State Reference	CA
Altitude	msl bound lower : 10000 msl bound upper : 10250
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tower : lax
Operator	common carrier : air carrier
Make Model Name	Medium Large Transport, Low Wing, 2 Turbojet Eng
Navigation In Use	Other
Flight Phase	cruise other
Route In Use	enroute airway : v21
Flight Plan	IFR
Aircraft 2
Operator	general aviation : personal
Make Model Name	Small Aircraft, High Wing, 1 Eng, Fixed 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 : 145 flight time total : 18700 flight time type : 145
ASRS Report	92704
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : commercial pilot : instrument
Events
Anomaly	conflict : nmac
Independent Detector	other flight crewa
Resolutory Action	none taken : insufficient time
Consequence	faa : reviewed incident with flight crew
Miss Distance	horizontal : 250 vertical : 0
Supplementary
Primary Problem	Flight Crew Human Performance

Narrative:

We were level at 10000' with ont approach going into ont. The first officer said, 'traffic 2 O'clock.' I looked and saw an small aircraft (I know an small aircraft, I owned one at one time) same altitude, about 250' to my right southbound. We were wbound on V2. No time to do anything. No traffic advisory on the small aircraft. I called the controller on the ground at ont and I was told the small aircraft was not observed. The small aircraft did not take any evasive action and he passed behind us very close.

Original NASA ASRS Text

Title: ON APCH INTO ONT HAD NMAC WITH SMA OPERATING VFR.

Narrative: WE WERE LEVEL AT 10000' WITH ONT APCH GOING INTO ONT. THE F/O SAID, 'TFC 2 O'CLOCK.' I LOOKED AND SAW AN SMA (I KNOW AN SMA, I OWNED ONE AT ONE TIME) SAME ALT, ABOUT 250' TO MY RIGHT SBND. WE WERE WBOUND ON V2. NO TIME TO DO ANYTHING. NO TFC ADVISORY ON THE SMA. I CALLED THE CTLR ON THE GND AT ONT AND I WAS TOLD THE SMA WAS NOT OBSERVED. THE SMA DID NOT TAKE ANY EVASIVE ACTION AND HE PASSED BEHIND US VERY CLOSE.

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.