Pilot of PA22 experiences near midair collision while flying through traffic pattern at clx.

Attributes
ACN	607869
Time
Date	200402
Day	Sun
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : cxl.airport
State Reference	CA
Altitude	msl single value : 1200
Environment
Flight Conditions	VMC
Light	Dusk
Aircraft 1
Operator	general aviation : personal
Make Model Name	Piper Single Undifferentiated or Other Model
Operating Under FAR Part	Part 91
Navigation In Use	other
Flight Phase	cruise : level
Flight Plan	None
Aircraft 2
Make Model Name	Small Transport
Person 1
Affiliation	other
Function	flight crew : single pilot
Qualification	pilot : private
Experience	flight time last 90 days : 20 flight time total : 175 flight time type : 20
ASRS Report	607869
Events
Anomaly	conflict : nmac non adherence : published procedure non adherence : far other spatial deviation
Independent Detector	other flight crewa other flight crewb
Resolutory Action	flight crew : took evasive action
Miss Distance	unspecified : 499
Supplementary
Problem Areas	Flight Crew Human Performance
Primary Problem	Flight Crew Human Performance

Narrative:

While flying along the california/mexico boarder, I flew over calexico airport at 1200 ft AGL. I had my radio off and saw no traffic. Suddenly, a twin engine aircraft flew across my nose at less than 500 ft of distance. The aircraft must have been making its base leg in the pattern. To avoid the traffic, I immediately banked 60 degrees opposite to his direction and the other aircraft did the same. The airport is 1/4 mi from the border and the twin undoubtedly crossed into mexican airspace because of my error. My failure to monitor the airport CTAF and watch for traffic nearly cost the lives of all involved. I have learned a lot from this near miss. Never again!

Original NASA ASRS Text

Title: PLT OF PA22 EXPERIENCES NMAC WHILE FLYING THROUGH TFC PATTERN AT CLX.

Narrative: WHILE FLYING ALONG THE CALIFORNIA/MEXICO BOARDER, I FLEW OVER CALEXICO ARPT AT 1200 FT AGL. I HAD MY RADIO OFF AND SAW NO TFC. SUDDENLY, A TWIN ENG ACFT FLEW ACROSS MY NOSE AT LESS THAN 500 FT OF DISTANCE. THE ACFT MUST HAVE BEEN MAKING ITS BASE LEG IN THE PATTERN. TO AVOID THE TFC, I IMMEDIATELY BANKED 60 DEGS OPPOSITE TO HIS DIRECTION AND THE OTHER ACFT DID THE SAME. THE ARPT IS 1/4 MI FROM THE BORDER AND THE TWIN UNDOUBTEDLY CROSSED INTO MEXICAN AIRSPACE BECAUSE OF MY ERROR. MY FAILURE TO MONITOR THE ARPT CTAF AND WATCH FOR TFC NEARLY COST THE LIVES OF ALL INVOLVED. I HAVE LEARNED A LOT FROM THIS NEAR MISS. NEVER AGAIN!

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.