Near midair collision at a non tower airport when 2 aircraft are on final approach at the same time ...

Attributes
ACN	543097
Time
Date	200203
Day	Sat
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : riu.airport
State Reference	CA
Altitude	msl single value : 2618
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tower : bfi.tower
Operator	general aviation : personal
Make Model Name	Decathlon
Operating Under FAR Part	Part 91
Flight Phase	descent : approach landing : go around
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
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 : 43 flight time total : 1960 flight time type : 483
ASRS Report	543097
Person 2
Affiliation	other
Function	flight crew : single pilot
Events
Anomaly	non adherence : far non adherence : published procedure non adherence : required legal separation other anomaly other other spatial deviation
Independent Detector	other flight crewa other flight crewb
Resolutory Action	flight crew : took precautionary avoidance action flight crew : executed go around other
Miss Distance	vertical : 500
Supplementary
Problem Areas	Airport Flight Crew Human Performance Airspace Structure
Primary Problem	Flight Crew Human Performance

Narrative:

I entered the pattern for runway 22 at riu on the 45 degree and saw a C150/152 mid field on downwind very close to runway and climbing. I called cessna on downwind, 'what is your intention?!' no reply. I slowed and leveled off at pattern altitude. I announced my position. As I neared base leg, I called cessna again and asked intention. No reply. I turned base and announced my position. Cessna was still climbing and appeared to be leaving pattern on base leg. As I turned final, I announced my position and asked cessna intentions. No reply. As I descended, I watched cessna through my clear overhead panel. On short final, cessna turned final and an aircraft waiting to depart called second aircraft on final. I announced decathlon going around. I maintained visual with very high cessna. Cessna landed very long. Next time I will not turn base until sure of other's intentions.

Original NASA ASRS Text

Title: NMAC AT A NON TWR ARPT WHEN 2 ACFT ARE ON FINAL APCH AT THE SAME TIME AT RIU, CA.

Narrative: I ENTERED THE PATTERN FOR RWY 22 AT RIU ON THE 45 DEG AND SAW A C150/152 MID FIELD ON DOWNWIND VERY CLOSE TO RWY AND CLBING. I CALLED CESSNA ON DOWNWIND, 'WHAT IS YOUR INTENTION?!' NO REPLY. I SLOWED AND LEVELED OFF AT PATTERN ALT. I ANNOUNCED MY POS. AS I NEARED BASE LEG, I CALLED CESSNA AGAIN AND ASKED INTENTION. NO REPLY. I TURNED BASE AND ANNOUNCED MY POS. CESSNA WAS STILL CLBING AND APPEARED TO BE LEAVING PATTERN ON BASE LEG. AS I TURNED FINAL, I ANNOUNCED MY POS AND ASKED CESSNA INTENTIONS. NO REPLY. AS I DSNDED, I WATCHED CESSNA THROUGH MY CLR OVERHEAD PANEL. ON SHORT FINAL, CESSNA TURNED FINAL AND AN ACFT WAITING TO DEPART CALLED SECOND ACFT ON FINAL. I ANNOUNCED DECATHLON GOING AROUND. I MAINTAINED VISUAL WITH VERY HIGH CESSNA. CESSNA LANDED VERY LONG. NEXT TIME I WILL NOT TURN BASE UNTIL SURE OF OTHER'S INTENTIONS.

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.

Near midair collision at a non tower airport when 2 aircraft are on final approach at the same time at riu, ca.