SR22 and commander experience near midair collision on approach to mce.

Attributes
ACN	730688
Time
Date	200703
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : mce.airport
State Reference	CA
Altitude	agl single value : 200
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Operator	general aviation : personal
Make Model Name	SR22
Operating Under FAR Part	Part 91
Flight Phase	descent : approach
Flight Plan	VFR
Aircraft 2
Operator	general aviation : corporate
Make Model Name	Rockwell Aero Commander single-engine undifferentiated
Flight Phase	descent : approach
Route In Use	approach : straight in
Person 1
Affiliation	other
Function	flight crew : single pilot
Qualification	pilot : private pilot : instrument
Experience	flight time last 90 days : 40 flight time total : 580 flight time type : 380
ASRS Report	730688
Person 2
Affiliation	company : corporate
Function	flight crew : single pilot
Events
Anomaly	conflict : nmac non adherence : published procedure other spatial deviation
Independent Detector	other flight crewa
Resolutory Action	flight crew : took evasive action
Supplementary
Problem Areas	Flight Crew Human Performance Airport
Primary Problem	Ambiguous

Narrative:

While landing at mce; I was downwind approaching turn to base when the commander announced 5 mi final straight-in. There were 2 other cessna aircraft in the pattern doing touch-and-goes. One was landing; one turning crosswind. At time to turn base; commander said I'm breaking out to give you guys some more room. He was approximately 1 mi out. I turned base then final assuming the commander was going upwind. Then the commander called out that I had cut him off. He had to take evasive action; which I did not see; then landed behind me. The other 2 airplanes; cessna's; left the pattern. I apologized to the pilot of the commander; as I truly did not intend to cause a conflict. In hindsight; I should have extended downwind until I knew for sure what the commander was going to do; so as not to be in his way. I would not have turned base or final if the commander had not said 'I will break out and give you guys room.'

Original NASA ASRS Text

Title: SR22 AND COMMANDER EXPERIENCE NMAC ON APCH TO MCE.

Narrative: WHILE LNDG AT MCE; I WAS DOWNWIND APCHING TURN TO BASE WHEN THE COMMANDER ANNOUNCED 5 MI FINAL STRAIGHT-IN. THERE WERE 2 OTHER CESSNA ACFT IN THE PATTERN DOING TOUCH-AND-GOES. ONE WAS LNDG; ONE TURNING XWIND. AT TIME TO TURN BASE; COMMANDER SAID I'M BREAKING OUT TO GIVE YOU GUYS SOME MORE ROOM. HE WAS APPROX 1 MI OUT. I TURNED BASE THEN FINAL ASSUMING THE COMMANDER WAS GOING UPWIND. THEN THE COMMANDER CALLED OUT THAT I HAD CUT HIM OFF. HE HAD TO TAKE EVASIVE ACTION; WHICH I DID NOT SEE; THEN LANDED BEHIND ME. THE OTHER 2 AIRPLANES; CESSNA'S; LEFT THE PATTERN. I APOLOGIZED TO THE PLT OF THE COMMANDER; AS I TRULY DID NOT INTEND TO CAUSE A CONFLICT. IN HINDSIGHT; I SHOULD HAVE EXTENDED DOWNWIND UNTIL I KNEW FOR SURE WHAT THE COMMANDER WAS GOING TO DO; SO AS NOT TO BE IN HIS WAY. I WOULD NOT HAVE TURNED BASE OR FINAL IF THE COMMANDER HAD NOT SAID 'I WILL BREAK OUT AND GIVE YOU GUYS ROOM.'

Data retrieved from NASA's ASRS site as of January 2009 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.