Near midair collision between air carrier-small transport on straight in approach and light transport on circling approach for parallel runway.

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Attributes
ACN	84306
Time
Date	198802
Place
Locale Reference	airport : ont
State Reference	CA
Altitude	agl bound lower : 500 agl bound upper : 800
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tower : ont
Operator	common carrier : air carrier
Make Model Name	Small Transport, Low Wing, 2 Recip Eng
Flight Phase	descent : approach
Route In Use	approach : straight in
Flight Plan	VFR
Aircraft 2
Make Model Name	Medium Transport, Low Wing, 2 Turbojet Eng
Flight Phase	descent : approach
Route In Use	approach : circling
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : flight engineer pilot : cfi pilot : atp
Experience	flight time last 90 days : 200 flight time total : 6200
ASRS Report	84306
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : commercial pilot : instrument
Experience	flight time last 90 days : 150 flight time total : 400 flight time type : 90
ASRS Report	84353
Events
Anomaly	conflict : nmac non adherence : clearance other spatial deviation
Independent Detector	other flight crewa
Resolutory Action	flight crew : took evasive action
Consequence	Other
Miss Distance	horizontal : 100 vertical : 100
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

We were cleared for straight in VFR approach to runway 26L ont. On contact with ont tower, the controller called us traffic 2 O'clock, 3 mi--mdt on visual approach runway 26R. We saw and acknowledged the traffic. On our approach to runway 26L first officer, with sharp concern, notified me that the mdt was on a collision course coming right at us. The pilot of mdt then made an evasive turn to the right, while we went to the left sharply to avoid him. The mdt then, after avoiding us the first time, returned back to the left, right in front of us making us make another left turn with me angrily asking, 'what's this mdt doing?' the mdt then went back sharp to the right, then proceeded to his correct runway of 26R. Both aircraft landed on their respective runways west/O further incident. Supplemental information from acn 84353: tower asked, 'what are you doing?' to the mdt. His response was very unsure of himself. The guy was clueless to what was happening!! After landing the 2 pilots of the mlt on the ramp were laughing and joking around as if nothing ever happened!

Original NASA ASRS Text

Title: NMAC BETWEEN ACR-SMT ON STRAIGHT IN APCH AND LTT ON CIRCLING APCH FOR PARALLEL RWY.

Narrative: WE WERE CLRED FOR STRAIGHT IN VFR APCH TO RWY 26L ONT. ON CONTACT WITH ONT TWR, THE CTLR CALLED US TFC 2 O'CLOCK, 3 MI--MDT ON VISUAL APCH RWY 26R. WE SAW AND ACKNOWLEDGED THE TFC. ON OUR APCH TO RWY 26L F/O, WITH SHARP CONCERN, NOTIFIED ME THAT THE MDT WAS ON A COLLISION COURSE COMING RIGHT AT US. THE PLT OF MDT THEN MADE AN EVASIVE TURN TO THE RIGHT, WHILE WE WENT TO THE LEFT SHARPLY TO AVOID HIM. THE MDT THEN, AFTER AVOIDING US THE FIRST TIME, RETURNED BACK TO THE LEFT, RIGHT IN FRONT OF US MAKING US MAKE ANOTHER LEFT TURN WITH ME ANGRILY ASKING, 'WHAT'S THIS MDT DOING?' THE MDT THEN WENT BACK SHARP TO THE RIGHT, THEN PROCEEDED TO HIS CORRECT RWY OF 26R. BOTH ACFT LANDED ON THEIR RESPECTIVE RWYS W/O FURTHER INCIDENT. SUPPLEMENTAL INFO FROM ACN 84353: TWR ASKED, 'WHAT ARE YOU DOING?' TO THE MDT. HIS RESPONSE WAS VERY UNSURE OF HIMSELF. THE GUY WAS CLUELESS TO WHAT WAS HAPPENING!! AFTER LNDG THE 2 PLTS OF THE MLT ON THE RAMP WERE LAUGHING AND JOKING AROUND AS IF NOTHING EVER HAPPENED!

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.