Near midair collision in traffic pattern at rnt, wa.

Attributes
ACN	491440
Time
Date	200011
Day	Sun
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : rnt.airport
State Reference	WA
Altitude	msl single value : 1000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tower : rnt.tower
Operator	general aviation : personal
Make Model Name	Skylane 182/RG Turbo Skylane/RG
Operating Under FAR Part	Part 91
Flight Phase	descent : approach landing : go around
Route In Use	approach : traffic pattern
Flight Plan	None
Aircraft 2
Controlling Facilities	tower : rnt.tower
Operator	general aviation : personal
Make Model Name	Cessna Aircraft Undifferentiated or Other Model
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 : instrument pilot : private
Experience	flight time last 90 days : 40 flight time total : 355 flight time type : 27
ASRS Report	491440
Person 2
Affiliation	other
Function	flight crew : single pilot
Qualification	pilot : private
Events
Anomaly	conflict : nmac non adherence : required legal separation other anomaly other
Independent Detector	other controllerb other flight crewa other flight crewb
Resolutory Action	controller : issued new clearance flight crew : became reoriented flight crew : took evasive action
Miss Distance	horizontal : 250 vertical : 0
Supplementary
Problem Areas	Flight Crew Human Performance ATC Human Performance
Primary Problem	ATC Human Performance

Narrative:

I was cleared to land on runway 15 at renton, following a cessna on final. Behind me was a twin comanche. Rnt tower asked me to go around (to allow the twin to land first), while I was still on final, and I complied. Then rnt tower told the twin comanche to also go around, as the cessna did not exit the runway in time. Rnt tower then told me to 'make your turn to downwind now,' while I was on upwind at about midfield, so I turned (without flying a crosswind leg) onto a close-in downwind. Rnt tower advised me that I would be able to make my base turn soon. I proceeded northbound towards the east channel bridge (between bellevue and mercer island, on the 343 degree radial, 5.3 NM from rnt NDB), over the water, on a close-in extended downwind. I was expecting rnt tower to tell me when to turn base, but he did not. Around the same time, an airplane reported inbound at the east channel bridge. I was looking for the traffic and now assume that rnt tower wanted me behind him also. I saw the other airplane and estimated we would miss by a few hundred ft and thus I would not need to alter my course, and then I saw him bank about 15 degrees to his right, to turn away from me. The new traffic was told to follow me and soon it became evident that rnt tower had wanted me to turn base without him telling me. I followed the new traffic to as instructed by rnt tower and was cleared to land. Rnt tower frequency was very busy and there was no opportunity to ask for clarification. I was advised that the pilot of the airplane that I followed to land considered the situation unsafe at the time and took evasive action, which was the banking of the airplane to his right that I saw.

Original NASA ASRS Text

Title: NMAC IN TFC PATTERN AT RNT, WA.

Narrative: I WAS CLRED TO LAND ON RWY 15 AT RENTON, FOLLOWING A CESSNA ON FINAL. BEHIND ME WAS A TWIN COMANCHE. RNT TWR ASKED ME TO GO AROUND (TO ALLOW THE TWIN TO LAND FIRST), WHILE I WAS STILL ON FINAL, AND I COMPLIED. THEN RNT TWR TOLD THE TWIN COMANCHE TO ALSO GO AROUND, AS THE CESSNA DID NOT EXIT THE RWY IN TIME. RNT TWR THEN TOLD ME TO 'MAKE YOUR TURN TO DOWNWIND NOW,' WHILE I WAS ON UPWIND AT ABOUT MIDFIELD, SO I TURNED (WITHOUT FLYING A XWIND LEG) ONTO A CLOSE-IN DOWNWIND. RNT TWR ADVISED ME THAT I WOULD BE ABLE TO MAKE MY BASE TURN SOON. I PROCEEDED NBOUND TOWARDS THE E CHANNEL BRIDGE (BTWN BELLEVUE AND MERCER ISLAND, ON THE 343 DEG RADIAL, 5.3 NM FROM RNT NDB), OVER THE WATER, ON A CLOSE-IN EXTENDED DOWNWIND. I WAS EXPECTING RNT TWR TO TELL ME WHEN TO TURN BASE, BUT HE DID NOT. AROUND THE SAME TIME, AN AIRPLANE RPTED INBOUND AT THE E CHANNEL BRIDGE. I WAS LOOKING FOR THE TFC AND NOW ASSUME THAT RNT TWR WANTED ME BEHIND HIM ALSO. I SAW THE OTHER AIRPLANE AND ESTIMATED WE WOULD MISS BY A FEW HUNDRED FT AND THUS I WOULD NOT NEED TO ALTER MY COURSE, AND THEN I SAW HIM BANK ABOUT 15 DEGS TO HIS R, TO TURN AWAY FROM ME. THE NEW TFC WAS TOLD TO FOLLOW ME AND SOON IT BECAME EVIDENT THAT RNT TWR HAD WANTED ME TO TURN BASE WITHOUT HIM TELLING ME. I FOLLOWED THE NEW TFC TO AS INSTRUCTED BY RNT TWR AND WAS CLRED TO LAND. RNT TWR FREQ WAS VERY BUSY AND THERE WAS NO OPPORTUNITY TO ASK FOR CLARIFICATION. I WAS ADVISED THAT THE PLT OF THE AIRPLANE THAT I FOLLOWED TO LAND CONSIDERED THE SIT UNSAFE AT THE TIME AND TOOK EVASIVE ACTION, WHICH WAS THE BANKING OF THE AIRPLANE TO HIS R THAT I SAW.

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.