Near midair collision between an M20F and a C150 in the traffic pattern at wlw, ca.

Attributes
ACN	579433
Time
Date	200304
Day	Sun
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : wlw.airport
State Reference	CA
Altitude	msl single value : 1139
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Operator	general aviation : personal
Make Model Name	M-20 F Executive 21
Operating Under FAR Part	Part 91
Flight Phase	descent : approach landing : roll
Route In Use	approach : traffic pattern
Flight Plan	None
Aircraft 2
Operator	general aviation : personal
Make Model Name	Cessna 150
Operating Under FAR Part	Part 91
Flight Phase	descent : approach landing : roll
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 : 15 flight time total : 1100 flight time type : 800
ASRS Report	579433
Person 2
Affiliation	other
Function	observation : passenger
Events
Anomaly	conflict : nmac non adherence : published procedure non adherence : far other spatial deviation
Independent Detector	other flight crewa
Resolutory Action	none taken : insufficient time
Consequence	Other
Miss Distance	horizontal : 100 vertical : 50
Supplementary
Problem Areas	Flight Crew Human Performance
Primary Problem	Flight Crew Human Performance

Narrative:

My wife and I were flying to wlw, entering the landing pattern at 1139 ft, on a right downwind leg of the traffic pattern. We announced our arrival at wlw 3 or 4 times from various distances from the airport. Entering right crosswind entry and right downwind, we heard a C150 announce he was on a 4 mi, 45 degree entry for downwind on runway 16. As we were midfield on right downwind to runway 16, the C150 cut right in front of us approximately 100 ft ahead and 50 ft below us, without any announcement and proceeded to fly right downwind closer in toward the airport. I immediately called out on the radio that he cut right in front of our airplane and we were overtaking him. He was approximately 50 ft below us, and announced he would extend his downwind, and proceeded to fly back under our airplane, as we watched closely. He said he would land #2 behind us. We proceeded on our downwind leg and, as we turned right base, the cessna pilot announced within 5-10 seconds that he was turning right base, immediately behind us. We continued and turned to final on runway 16 and landed. We noticed just as we turned off the runway, the cessna had landed behind us while we were still on the runway, and had turned off a taxiway at midfield, and was taxiing toward the tie down area just as we turned to taxi toward the tie down area. It was clearly evident that he had landed while we were on the runway, a violation of the far's. We confronted the pilot, informing him that his actions were unsafe and violated the far's by landing while we were still on the runway. We stated he could have caused a midair collision, and he stated, 'why are you in such a huff?' I explained that it was because he was an unsafe pilot and could have killed us, himself, and his passenger. He stated he had announced 'once' his entering the 45 degree entry to right downwind runway 16 from a few mi out, and then again turning on the right downwind. I informed him he wasn't diligent in looking for us since I had announced my position now about 5 times while approaching the airport and again on downwind. He didn't say he was sorry.

Original NASA ASRS Text

Title: NMAC BTWN AN M20F AND A C150 IN THE TFC PATTERN AT WLW, CA.

Narrative: MY WIFE AND I WERE FLYING TO WLW, ENTERING THE LNDG PATTERN AT 1139 FT, ON A R DOWNWIND LEG OF THE TFC PATTERN. WE ANNOUNCED OUR ARR AT WLW 3 OR 4 TIMES FROM VARIOUS DISTANCES FROM THE ARPT. ENTERING R XWIND ENTRY AND R DOWNWIND, WE HEARD A C150 ANNOUNCE HE WAS ON A 4 MI, 45 DEG ENTRY FOR DOWNWIND ON RWY 16. AS WE WERE MIDFIELD ON R DOWNWIND TO RWY 16, THE C150 CUT RIGHT IN FRONT OF US APPROX 100 FT AHEAD AND 50 FT BELOW US, WITHOUT ANY ANNOUNCEMENT AND PROCEEDED TO FLY R DOWNWIND CLOSER IN TOWARD THE ARPT. I IMMEDIATELY CALLED OUT ON THE RADIO THAT HE CUT RIGHT IN FRONT OF OUR AIRPLANE AND WE WERE OVERTAKING HIM. HE WAS APPROX 50 FT BELOW US, AND ANNOUNCED HE WOULD EXTEND HIS DOWNWIND, AND PROCEEDED TO FLY BACK UNDER OUR AIRPLANE, AS WE WATCHED CLOSELY. HE SAID HE WOULD LAND #2 BEHIND US. WE PROCEEDED ON OUR DOWNWIND LEG AND, AS WE TURNED R BASE, THE CESSNA PLT ANNOUNCED WITHIN 5-10 SECONDS THAT HE WAS TURNING R BASE, IMMEDIATELY BEHIND US. WE CONTINUED AND TURNED TO FINAL ON RWY 16 AND LANDED. WE NOTICED JUST AS WE TURNED OFF THE RWY, THE CESSNA HAD LANDED BEHIND US WHILE WE WERE STILL ON THE RWY, AND HAD TURNED OFF A TXWY AT MIDFIELD, AND WAS TAXIING TOWARD THE TIE DOWN AREA JUST AS WE TURNED TO TAXI TOWARD THE TIE DOWN AREA. IT WAS CLRLY EVIDENT THAT HE HAD LANDED WHILE WE WERE ON THE RWY, A VIOLATION OF THE FAR'S. WE CONFRONTED THE PLT, INFORMING HIM THAT HIS ACTIONS WERE UNSAFE AND VIOLATED THE FAR'S BY LNDG WHILE WE WERE STILL ON THE RWY. WE STATED HE COULD HAVE CAUSED A MIDAIR COLLISION, AND HE STATED, 'WHY ARE YOU IN SUCH A HUFF?' I EXPLAINED THAT IT WAS BECAUSE HE WAS AN UNSAFE PLT AND COULD HAVE KILLED US, HIMSELF, AND HIS PAX. HE STATED HE HAD ANNOUNCED 'ONCE' HIS ENTERING THE 45 DEG ENTRY TO R DOWNWIND RWY 16 FROM A FEW MI OUT, AND THEN AGAIN TURNING ON THE R DOWNWIND. I INFORMED HIM HE WASN'T DILIGENT IN LOOKING FOR US SINCE I HAD ANNOUNCED MY POS NOW ABOUT 5 TIMES WHILE APCHING THE ARPT AND AGAIN ON DOWNWIND. HE DIDN'T SAY HE WAS SORRY.

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.