A beech bonanza has an near midair collision with a cessna type in the traffic pattern at crq, ca.

Attributes
ACN	432071
Time
Date	199903
Day	Sat
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : crq.airport
State Reference	CA
Altitude	agl single value : 1300
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tower : crq.tower
Operator	general aviation : personal
Make Model Name	Bonanza 33
Operating Under FAR Part	Part 91
Navigation In Use	other
Route In Use	approach : traffic pattern
Flight Plan	VFR
Aircraft 2
Controlling Facilities	tower : 0r9.tower
Operator	general aviation : personal
Make Model Name	Cessna Aircraft Undifferentiated or Other Model
Operating Under FAR Part	Part 91
Flight Phase	descent : approach
Route In Use	approach : traffic pattern
Person 1
Affiliation	other
Function	flight crew : single pilot
Qualification	pilot : private pilot : instrument
Experience	flight time last 90 days : 35 flight time total : 1350 flight time type : 550
ASRS Report	432071
Person 2
Affiliation	other
Function	flight crew : single pilot
Qualification	pilot : private
Events
Anomaly	conflict : nmac non adherence : clearance non adherence : required legal separation non adherence : far other spatial deviation
Independent Detector	other flight crewa
Resolutory Action	flight crew : took evasive action
Miss Distance	horizontal : 50 vertical : 25
Supplementary
Problem Areas	ATC Human Performance Environmental Factor Flight Crew Human Performance Airport
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

On a visual approach to mcclellan-palomar airport in carlsbad, ca, I was 4TH for the approach and instructed to follow cessna on right base. I was in the right downwind and believed I had traffic in sight. I turned right base leg and tried several times to notify the tower of my position but could not contact the tower due to radio frequency congestion. As I turned base, I approached another plane (cessna) turning left base to final. I then realized my traffic was outside of my position on the right base. The near miss was 50-75 ft.

Original NASA ASRS Text

Title: A BEECH BONANZA HAS AN NMAC WITH A CESSNA TYPE IN THE TFC PATTERN AT CRQ, CA.

Narrative: ON A VISUAL APCH TO MCCLELLAN-PALOMAR ARPT IN CARLSBAD, CA, I WAS 4TH FOR THE APCH AND INSTRUCTED TO FOLLOW CESSNA ON R BASE. I WAS IN THE R DOWNWIND AND BELIEVED I HAD TFC IN SIGHT. I TURNED R BASE LEG AND TRIED SEVERAL TIMES TO NOTIFY THE TWR OF MY POS BUT COULD NOT CONTACT THE TWR DUE TO RADIO FREQ CONGESTION. AS I TURNED BASE, I APCHED ANOTHER PLANE (CESSNA) TURNING L BASE TO FINAL. I THEN REALIZED MY TFC WAS OUTSIDE OF MY POS ON THE R BASE. THE NEAR MISS WAS 50-75 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.