2 small aircraft's had an near midair collision on the cno traffic pattern.

Attributes
ACN	266762
Time
Date	199403
Day	Sat
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : cno
State Reference	CA
Altitude	agl bound lower : 500 agl bound upper : 500
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tower : cno tracon : dfw
Operator	general aviation : personal
Make Model Name	Any Unknown or Unlisted Aircraft Manufacturer
Operating Under FAR Part	Part 91
Flight Phase	climbout : initial cruise other
Flight Plan	IFR
Aircraft 2
Make Model Name	Any Unknown or Unlisted Aircraft Manufacturer
Operating Under FAR Part	Part 91
Flight Phase	cruise other cruise other
Person 1
Affiliation	Other
Function	flight crew : single pilot
Qualification	pilot : instrument pilot : private
Experience	flight time last 90 days : 15 flight time total : 300 flight time type : 100
ASRS Report	266762
Person 2
Affiliation	Other
Function	flight crew : single pilot
Events
Anomaly	conflict : nmac non adherence : far non adherence : published procedure other anomaly other
Independent Detector	other flight crewa
Resolutory Action	none taken : unable
Consequence	faa : reviewed incident with flight crew
Miss Distance	horizontal : 0 vertical : 200
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

I was cleared for takeoff runway 21 cno on an IFR flight plan to crq. The clearance read, 'after departure, direct paradise VOR.' this required a left crosswind turn (standard for closed traffic at cno). At approximately 1000 ft MSL (400 ft AGL), I began my crosswind turn. Upon leveling out at 1100 ft MSL (500 AGL) on crosswind, I noted an aircraft pass directly underneath me, headed toward the airport. I asked the control tower if they knew this aircraft was there, and they said no. I asked them if they were in radio contact with the pilot and they said no. I requested that the tower controller, when establishing radio contact with the pilot, to tell him/her that he is an idiot. The tower controller said she couldn't honor that request. Upon reaching my destination about 45 mins later, I called cno tower to see if they had the 'north' number of this aircraft, and they did not. The controller that I spoke with on the phone (not the original controller) said it had been a busy and crazy morning. He stated that one aircraft landed at the airport without making any radio contact with anyone (I wonder if this is the same plane I had the conflict with) and another had taken off full length runway 21 without getting tower clearance (simultaneous use runways 21 and 26 intersecting!!)

Original NASA ASRS Text

Title: 2 SMA'S HAD AN NMAC ON THE CNO TFC PATTERN.

Narrative: I WAS CLRED FOR TKOF RWY 21 CNO ON AN IFR FLT PLAN TO CRQ. THE CLRNC READ, 'AFTER DEP, DIRECT PARADISE VOR.' THIS REQUIRED A L XWIND TURN (STANDARD FOR CLOSED TFC AT CNO). AT APPROX 1000 FT MSL (400 FT AGL), I BEGAN MY XWIND TURN. UPON LEVELING OUT AT 1100 FT MSL (500 AGL) ON XWIND, I NOTED AN ACFT PASS DIRECTLY UNDERNEATH ME, HEADED TOWARD THE ARPT. I ASKED THE CTL TWR IF THEY KNEW THIS ACFT WAS THERE, AND THEY SAID NO. I ASKED THEM IF THEY WERE IN RADIO CONTACT WITH THE PLT AND THEY SAID NO. I REQUESTED THAT THE TWR CTLR, WHEN ESTABLISHING RADIO CONTACT WITH THE PLT, TO TELL HIM/HER THAT HE IS AN IDIOT. THE TWR CTLR SAID SHE COULDN'T HONOR THAT REQUEST. UPON REACHING MY DEST ABOUT 45 MINS LATER, I CALLED CNO TWR TO SEE IF THEY HAD THE 'N' NUMBER OF THIS ACFT, AND THEY DID NOT. THE CTLR THAT I SPOKE WITH ON THE PHONE (NOT THE ORIGINAL CTLR) SAID IT HAD BEEN A BUSY AND CRAZY MORNING. HE STATED THAT ONE ACFT LANDED AT THE ARPT WITHOUT MAKING ANY RADIO CONTACT WITH ANYONE (I WONDER IF THIS IS THE SAME PLANE I HAD THE CONFLICT WITH) AND ANOTHER HAD TAKEN OFF FULL LENGTH RWY 21 WITHOUT GETTING TWR CLRNC (SIMULTANEOUS USE RWYS 21 AND 26 INTERSECTING!!)

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.