Near midair collision.

Attributes
ACN	209481
Time
Date	199205
Day	Sun
Local Time Of Day	1201 To 1800
Place
Locale Reference	atc facility : pdz
State Reference	CA
Altitude	msl bound lower : 10000 msl bound upper : 10000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : ont tower : lax
Operator	common carrier : air carrier
Make Model Name	Light Transport, Low Wing, 2 Turboprop Eng
Flight Phase	cruise other
Route In Use	enroute : on vectors
Flight Plan	IFR
Aircraft 2
Operator	general aviation : corporate
Make Model Name	Small Transport, Low Wing, 2 Turboprop Eng
Flight Phase	climbout : intermediate altitude cruise other
Route In Use	enroute : direct
Flight Plan	VFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Experience	flight time last 90 days : 250 flight time total : 13000 flight time type : 800
ASRS Report	209481
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : instrument pilot : commercial
Events
Anomaly	conflict : nmac non adherence : far other anomaly other
Independent Detector	other flight crewa
Resolutory Action	flight crew : took evasive action
Consequence	Other
Miss Distance	horizontal : 200 vertical : 0
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation
Situations
ATC Facility	procedure or policy : unspecified

Narrative:

While conducting a passenger flight on an IFR flight plan we were being radar vectored by ontario approach control. Level at 10000 ft MSL inbound to lax. Captain was flying. Conflicting traffic was seen by captain who immediately took evasive action. A 60 degree left bank was needed to avoid collision. The other aircraft was a cpr small transport. He took no evasive action. Shortly after passing clear of the traffic, ontario approach called traffic as 12 O'clock less than a mi, no altitude. No further discussion by ATC or the other aircraft was made. When we first saw the small transport he was at 12 O'clock, opposite direction, same altitude and less than 1/2 mi. Our speed was 240 KTS IAS and we were level at 10000 ft. From first recognition of the other traffic till he passed clear of us was approximately 5 seconds. We were wbound looking into a sun and haze condition. Visibility was reported on the ground as 10 mi but looking into the sun through the haze visibility was somewhat reduced.

Original NASA ASRS Text

Title: NMAC.

Narrative: WHILE CONDUCTING A PAX FLT ON AN IFR FLT PLAN WE WERE BEING RADAR VECTORED BY ONTARIO APCH CTL. LEVEL AT 10000 FT MSL INBOUND TO LAX. CAPT WAS FLYING. CONFLICTING TFC WAS SEEN BY CAPT WHO IMMEDIATELY TOOK EVASIVE ACTION. A 60 DEG L BANK WAS NEEDED TO AVOID COLLISION. THE OTHER ACFT WAS A CPR SMT. HE TOOK NO EVASIVE ACTION. SHORTLY AFTER PASSING CLR OF THE TFC, ONTARIO APCH CALLED TFC AS 12 O'CLOCK LESS THAN A MI, NO ALT. NO FURTHER DISCUSSION BY ATC OR THE OTHER ACFT WAS MADE. WHEN WE FIRST SAW THE SMT HE WAS AT 12 O'CLOCK, OPPOSITE DIRECTION, SAME ALT AND LESS THAN 1/2 MI. OUR SPD WAS 240 KTS IAS AND WE WERE LEVEL AT 10000 FT. FROM FIRST RECOGNITION OF THE OTHER TFC TILL HE PASSED CLR OF US WAS APPROX 5 SECONDS. WE WERE WBOUND LOOKING INTO A SUN AND HAZE CONDITION. VISIBILITY WAS RPTED ON THE GND AS 10 MI BUT LOOKING INTO THE SUN THROUGH THE HAZE VISIBILITY WAS SOMEWHAT REDUCED.

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.