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Flight crew perceived a collision hazard with a widebody transport passing from left to right. PIC turned and climbed aircraft.
| Attributes | |
| ACN | 182095 |
| Time | |
| Date | 199106 |
| Day | Wed |
| Local Time Of Day | 1801 To 2400 |
| Place | |
| Locale Reference | airport : ont |
| State Reference | CA |
| Altitude | msl bound lower : 4200 msl bound upper : 4300 |
| Environment | |
| Flight Conditions | VMC |
| Light | Dusk |
| Aircraft 1 | |
| Controlling Facilities | tracon : ont |
| Operator | common carrier : air carrier |
| Make Model Name | Medium Large Transport, Low Wing, 2 Turbojet Eng |
| Flight Phase | climbout : intermediate altitude cruise other |
| Route In Use | approach : straight in arrival other |
| Flight Plan | IFR |
| Aircraft 2 | |
| Operator | common carrier : air carrier |
| Make Model Name | Widebody, Low Wing, 4 Turbojet Eng |
| Navigation In Use | Other |
| Flight Phase | cruise other |
| Route In Use | arrival other |
| Flight Plan | IFR |
| 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 : 8000 flight time type : 6500 |
| ASRS Report | 182095 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 210 flight time total : 4500 flight time type : 1300 |
| ASRS Report | 182631 |
| Events | |
| Anomaly | altitude deviation : excursion from assigned altitude conflict : airborne less severe non adherence : clearance other anomaly other |
| Independent Detector | other controllera other flight crewa |
| Resolutory Action | flight crew : took evasive action flight crew : returned to intended course or assigned course |
| Consequence | faa : reviewed incident with flight crew |
| Miss Distance | horizontal : 0 vertical : 1300 |
| Supplementary | |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation |
Narrative:
At ont, ca approaching petis at 4300 ft cleared to 4200 ft controller notified us of widebody transport traffic at 10 O'clock position crossing underneath for norton AFB. At petis I saw the widebody transport at about 2 mi at 10 O'clock. His deck angle seemed very high as if climbing so I took the aircraft and turned left and gained 300 ft then rolled back to the right. The first officer saw the widebody transport at what appeared to be 500 ft away. Continued the approach, landed and called approach supervisor. He said the widebody transport was holding 3200 ft.
Original NASA ASRS Text
Title: FLC PERCEIVED A COLLISION HAZARD WITH A WDB PASSING FROM L TO R. PIC TURNED AND CLBED ACFT.
Narrative: AT ONT, CA APCHING PETIS AT 4300 FT CLRED TO 4200 FT CTLR NOTIFIED US OF WDB TFC AT 10 O'CLOCK POS XING UNDERNEATH FOR NORTON AFB. AT PETIS I SAW THE WDB AT ABOUT 2 MI AT 10 O'CLOCK. HIS DECK ANGLE SEEMED VERY HIGH AS IF CLBING SO I TOOK THE ACFT AND TURNED L AND GAINED 300 FT THEN ROLLED BACK TO THE R. THE FO SAW THE WDB AT WHAT APPEARED TO BE 500 FT AWAY. CONTINUED THE APCH, LANDED AND CALLED APCH SUPVR. HE SAID THE WDB WAS HOLDING 3200 FT.
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.