C152 and BE76 had near midair collision at uncontrolled airport 85L.

Attributes
ACN	506580
Time
Date	200103
Day	Tue
Local Time Of Day	0601 To 1200
Place
State Reference	CA
Altitude	msl single value : 1000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Operator	general aviation : instructional
Make Model Name	Cessna 152
Operating Under FAR Part	Part 91
Navigation In Use	other
Flight Phase	descent : approach
Route In Use	approach : visual
Flight Plan	None
Aircraft 2
Operator	general aviation : instructional
Make Model Name	Duchess 76
Operating Under FAR Part	Part 91
Navigation In Use	other
Flight Phase	descent : approach descent : vacating altitude
Route In Use	approach : visual
Person 1
Affiliation	other
Function	instruction : instructor
Qualification	pilot : multi engine pilot : instrument pilot : cfi pilot : commercial
Experience	flight time last 90 days : 250 flight time total : 3000 flight time type : 1500
ASRS Report	506580
Person 2
Affiliation	other
Function	flight crew : single pilot instruction : trainee
Qualification	pilot : commercial
Events
Anomaly	conflict : airborne critical conflict : nmac non adherence : far non adherence : published procedure other anomaly other
Independent Detector	other flight crewa other flight crewb
Resolutory Action	flight crew : took evasive action none taken : detected after the fact
Miss Distance	horizontal : 75 vertical : 75
Supplementary
Problem Areas	Flight Crew Human Performance
Primary Problem	Flight Crew Human Performance

Narrative:

C152 established right downwind at pattern altitude. BE76 descended down on 45 degree entry to pattern and did not see C152 due to right engine nacelle and wing -- classic high/low wing confign occurrence. Evasive 360 degree turn to C152's left as BE760 flew past from high left to level (same altitude) flight off the previous flight path of C152. Speed difference played a factor: C152 at 85 KTS, BE76 appeared to be approximately 110-115 KTS. Pilot (myself) contacted instructor on board BE76 to discuss what happened. He stated that they never saw us and did not establish our location in pattern via radio call due to workload in BE76 cockpit (training session). C152 right seat was a CFI applicant and he stated that he heard the BE76 call inbound on 45 degrees but never made visual contact.

Original NASA ASRS Text

Title: C152 AND BE76 HAD NMAC AT UNCTLED ARPT 85L.

Narrative: C152 ESTABLISHED R DOWNWIND AT PATTERN ALT. BE76 DSNDED DOWN ON 45 DEG ENTRY TO PATTERN AND DID NOT SEE C152 DUE TO R ENG NACELLE AND WING -- CLASSIC HIGH/LOW WING CONFIGN OCCURRENCE. EVASIVE 360 DEG TURN TO C152'S L AS BE760 FLEW PAST FROM HIGH L TO LEVEL (SAME ALT) FLT OFF THE PREVIOUS FLT PATH OF C152. SPD DIFFERENCE PLAYED A FACTOR: C152 AT 85 KTS, BE76 APPEARED TO BE APPROX 110-115 KTS. PLT (MYSELF) CONTACTED INSTRUCTOR ON BOARD BE76 TO DISCUSS WHAT HAPPENED. HE STATED THAT THEY NEVER SAW US AND DID NOT ESTABLISH OUR LOCATION IN PATTERN VIA RADIO CALL DUE TO WORKLOAD IN BE76 COCKPIT (TRAINING SESSION). C152 R SEAT WAS A CFI APPLICANT AND HE STATED THAT HE HEARD THE BE76 CALL INBOUND ON 45 DEGS BUT NEVER MADE VISUAL CONTACT.

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.