C172 and piper cub have an near midair collision at ryn.

Attributes
ACN	689254
Time
Date	200602
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : ryn.airport
State Reference	AZ
Altitude	agl single value : 500
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tower : ryn.tower
Operator	general aviation : personal
Make Model Name	Skyhawk 172/Cutlass 172
Operating Under FAR Part	Part 91
Flight Phase	descent : approach
Route In Use	approach : visual
Flight Plan	None
Aircraft 2
Controlling Facilities	tower : ryn.tower
Operator	general aviation : personal
Make Model Name	J3 Cub
Operating Under FAR Part	Part 91
Flight Phase	descent : approach
Route In Use	approach : visual
Person 1
Affiliation	other
Function	flight crew : single pilot
Qualification	pilot : private pilot : instrument
Experience	flight time last 90 days : 6 flight time total : 282 flight time type : 165
ASRS Report	689254
Person 2
Affiliation	other
Function	flight crew : single pilot
Events
Anomaly	conflict : nmac
Independent Detector	other flight crewa
Resolutory Action	flight crew : took evasive action
Miss Distance	horizontal : 150 vertical : 10
Supplementary
Problem Areas	Flight Crew Human Performance ATC Human Performance
Primary Problem	Flight Crew Human Performance

Narrative:

Runways 6L and 6R were active. I was on right downwind for runway 6; cleared #2 to land behind a cherokee. The cub was a few mi away cleared to land straight-in on runway 6L. I was warned about the cub being at 12 O'clock position. I told the controller when I spotted the cherokee (and started turn to base); but that I did not see the cub (which the controller said was brightly colored). We were the only 3 planes the controller were dealing with. I heard the controller issuing instructions to the cub; but I was focused on staying behind the cherokee. Then the controller began to urgently tell me the cub was at 12 O'clock. Since I was turning to base; I wasn't sure where he was referring. Plus; I was expecting the cub to be landing runway 6L; so there shouldn't have been an issue. Once established on base; I spotted the cub at my 9 O'clock position; lined up for runway 6R (my passenger saw it too at this point). I exercised my authority/authorized and responsibility to see and avoid by extending my base and turning final for runway 6L. The controller then switched our landing clrncs and had a few choice words for the cub pilot for failing to follow instructions. Not knowing or certain if he was on my tail; I got off runway 6L at the first available turnoff; which was runway 15/33. The controller cleared me to taxi on the inactive runway until I was clear of runway 6R. The other pilot sounded like a confused; elderly man. He was slow on the radio; tying up the frequency. Until I crossed his path; he didn't seem to truly grasp the situation. The controller got flustered. He probably should've vectored me away since I did not have the cub in sight. He spent too much time trying to get the cub pilot to change course. Raising his voice instead of remaining calm might have flustered the cub pilot. I should've paid more attention when the controller raised his voice while talking to the cub pilot. I should not have turned base until I had the cub in sight. I was too focused on maintaining contact with the cherokee. I was programmed with the usual routine of turning downwind-to-base once the preceding aircraft had passed me on its final leg. Yellow is a good color if you want to be seen.

Original NASA ASRS Text

Title: C172 AND PIPER CUB HAVE AN NMAC AT RYN.

Narrative: RWYS 6L AND 6R WERE ACTIVE. I WAS ON R DOWNWIND FOR RWY 6; CLRED #2 TO LAND BEHIND A CHEROKEE. THE CUB WAS A FEW MI AWAY CLRED TO LAND STRAIGHT-IN ON RWY 6L. I WAS WARNED ABOUT THE CUB BEING AT 12 O'CLOCK POS. I TOLD THE CTLR WHEN I SPOTTED THE CHEROKEE (AND STARTED TURN TO BASE); BUT THAT I DID NOT SEE THE CUB (WHICH THE CTLR SAID WAS BRIGHTLY COLORED). WE WERE THE ONLY 3 PLANES THE CTLR WERE DEALING WITH. I HEARD THE CTLR ISSUING INSTRUCTIONS TO THE CUB; BUT I WAS FOCUSED ON STAYING BEHIND THE CHEROKEE. THEN THE CTLR BEGAN TO URGENTLY TELL ME THE CUB WAS AT 12 O'CLOCK. SINCE I WAS TURNING TO BASE; I WASN'T SURE WHERE HE WAS REFERRING. PLUS; I WAS EXPECTING THE CUB TO BE LNDG RWY 6L; SO THERE SHOULDN'T HAVE BEEN AN ISSUE. ONCE ESTABLISHED ON BASE; I SPOTTED THE CUB AT MY 9 O'CLOCK POS; LINED UP FOR RWY 6R (MY PAX SAW IT TOO AT THIS POINT). I EXERCISED MY AUTH AND RESPONSIBILITY TO SEE AND AVOID BY EXTENDING MY BASE AND TURNING FINAL FOR RWY 6L. THE CTLR THEN SWITCHED OUR LNDG CLRNCS AND HAD A FEW CHOICE WORDS FOR THE CUB PLT FOR FAILING TO FOLLOW INSTRUCTIONS. NOT KNOWING OR CERTAIN IF HE WAS ON MY TAIL; I GOT OFF RWY 6L AT THE FIRST AVAILABLE TURNOFF; WHICH WAS RWY 15/33. THE CTLR CLRED ME TO TAXI ON THE INACTIVE RWY UNTIL I WAS CLR OF RWY 6R. THE OTHER PLT SOUNDED LIKE A CONFUSED; ELDERLY MAN. HE WAS SLOW ON THE RADIO; TYING UP THE FREQ. UNTIL I CROSSED HIS PATH; HE DIDN'T SEEM TO TRULY GRASP THE SIT. THE CTLR GOT FLUSTERED. HE PROBABLY SHOULD'VE VECTORED ME AWAY SINCE I DID NOT HAVE THE CUB IN SIGHT. HE SPENT TOO MUCH TIME TRYING TO GET THE CUB PLT TO CHANGE COURSE. RAISING HIS VOICE INSTEAD OF REMAINING CALM MIGHT HAVE FLUSTERED THE CUB PLT. I SHOULD'VE PAID MORE ATTN WHEN THE CTLR RAISED HIS VOICE WHILE TALKING TO THE CUB PLT. I SHOULD NOT HAVE TURNED BASE UNTIL I HAD THE CUB IN SIGHT. I WAS TOO FOCUSED ON MAINTAINING CONTACT WITH THE CHEROKEE. I WAS PROGRAMMED WITH THE USUAL ROUTINE OF TURNING DOWNWIND-TO-BASE ONCE THE PRECEDING ACFT HAD PASSED ME ON ITS FINAL LEG. YELLOW IS A GOOD COLOR IF YOU WANT TO BE SEEN.

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.