Small aircraft on final approach and a beech 36 turning final from base leg have close near midair c...

Attributes
ACN	347047
Time
Date	199609
Day	Thu
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : l66
State Reference	CA
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Operator	general aviation : personal
Make Model Name	Any Unknown or Unlisted Aircraft Manufacturer
Operating Under FAR Part	Part 91
Flight Phase	descent : approach landing : go around landing other
Flight Plan	None
Aircraft 2
Make Model Name	Bonanza 36
Operating Under FAR Part	Part 91
Flight Phase	descent : approach landing other
Person 1
Affiliation	Other
Function	flight crew : first officer instruction : instructor oversight : pic
Qualification	pilot : cfi pilot : commercial pilot : instrument
Experience	flight time last 90 days : 60 flight time total : 4800 flight time type : 800
ASRS Report	347047
Person 2
Affiliation	Other
Function	flight crew : single pilot instruction : trainee
Qualification	other other : other
Events
Anomaly	conflict : nmac non adherence : far non adherence : published procedure other anomaly other other spatial deviation
Independent Detector	other other : unspecified
Resolutory Action	flight crew : took evasive action
Consequence	Other
Miss Distance	horizontal : 40 vertical : 10
Supplementary
Primary Problem	Flight Crew Human Performance

Narrative:

Operating into uncontrolled airport with wrong unicom frequency. Flew standard pattern, no aircraft sighted. On final observed beech A36 on very close-in base leg (left traffic) with steep left bank angle headed directly for us. Pilot rated passenger in rear seat observed other aircraft and alerted PIC in right seat. Immediately started climbing right turn to avoid collision. Failure to monitor correct unicom on our part and failure of other pilot's scan as well as short approach were main factors. Without passenger alertness this would have resulted in collision.

Original NASA ASRS Text

Title: SMA ON FINAL APCH AND A BEECH 36 TURNING FINAL FROM BASE LEG HAVE CLOSE NMAC.

Narrative: OPERATING INTO UNCTLED ARPT WITH WRONG UNICOM FREQ. FLEW STANDARD PATTERN, NO ACFT SIGHTED. ON FINAL OBSERVED BEECH A36 ON VERY CLOSE-IN BASE LEG (L TFC) WITH STEEP L BANK ANGLE HEADED DIRECTLY FOR US. PLT RATED PAX IN REAR SEAT OBSERVED OTHER ACFT AND ALERTED PIC IN R SEAT. IMMEDIATELY STARTED CLBING R TURN TO AVOID COLLISION. FAILURE TO MONITOR CORRECT UNICOM ON OUR PART AND FAILURE OF OTHER PLT'S SCAN AS WELL AS SHORT APCH WERE MAIN FACTORS. WITHOUT PAX ALERTNESS THIS WOULD HAVE RESULTED IN COLLISION.

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.

Small aircraft on final approach and a beech 36 turning final from base leg have close near midair collision.