Near midair collision at airport with multiple runway operation parallel runways.

Attributes
ACN	254122
Time
Date	199310
Day	Wed
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : pae
State Reference	WA
Altitude	msl bound lower : 1300 msl bound upper : 1300
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tower : pae
Operator	general aviation : instructional
Make Model Name	Small Aircraft, High Wing, 1 Eng, Fixed Gear
Flight Phase	other other
Flight Plan	None
Aircraft 2
Operator	general aviation : personal
Make Model Name	Small Aircraft, Low Wing, 2 Eng, Retractable Gear
Flight Phase	descent : approach
Route In Use	approach : straight in
Flight Plan	VFR
Person 1
Affiliation	Other
Function	instruction : instructor oversight : pic
Qualification	pilot : commercial pilot : cfi pilot : instrument
Experience	flight time last 90 days : 120 flight time total : 2500 flight time type : 2000
ASRS Report	254122
Person 2
Affiliation	Other
Function	flight crew : single pilot instruction : trainee
Qualification	pilot : student
Events
Anomaly	conflict : nmac non adherence : published procedure non adherence : far non adherence : clearance other anomaly other
Independent Detector	other flight crewa
Resolutory Action	flight crew : took evasive action other
Consequence	faa : reviewed incident with flight crew
Miss Distance	horizontal : 400 vertical : 0
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation
Situations
ATC Facility	procedure or policy : unspecified

Narrative:

The airport has parallel runways 16/34. Separate local frequencys are used for each runway. We had already done 1 touch and go on 16R and wanted to do a full stop landing. The local controller was working both frequencys. An small aircraft twin Y was doing an instrument approach to 16R and I could hear the controller making xmissions to an small transport twin Z, to which I heard no response. On downwind, I twice requested a full stop landing to which I received no response. We had received no clearance of any type as we turned right base. At that time, I heard the controller tell the small transport Z 'oh, there you are, I thought you were coming from the west. You are #2 behind the small aircraft Y on final.' at the same time, we observed the small transport Z on left base for 16R at our altitude. Although this is not standard, I chose to make a right 360 to avoid the small transport Z and transmitted that information. I had no clearance and, as the small transport Z was still on the frequency for the east runway (16L), I did not know whether or not they had seen us. We then re-entered on base to final and received landing clearance. In later conversation with the tower, controller stated they could have instructed us to go around, rather than sending the small transport Z to the west to re-enter left base. I believe this could have been avoided had the small transport Z been on the west frequency.

Original NASA ASRS Text

Title: NMAC AT ARPT WITH MULTIPLE RWY OP PARALLEL RWYS.

Narrative: THE ARPT HAS PARALLEL RWYS 16/34. SEPARATE LCL FREQS ARE USED FOR EACH RWY. WE HAD ALREADY DONE 1 TOUCH AND GO ON 16R AND WANTED TO DO A FULL STOP LNDG. THE LCL CTLR WAS WORKING BOTH FREQS. AN SMA TWIN Y WAS DOING AN INST APCH TO 16R AND I COULD HEAR THE CTLR MAKING XMISSIONS TO AN SMT TWIN Z, TO WHICH I HEARD NO RESPONSE. ON DOWNWIND, I TWICE REQUESTED A FULL STOP LNDG TO WHICH I RECEIVED NO RESPONSE. WE HAD RECEIVED NO CLRNC OF ANY TYPE AS WE TURNED R BASE. AT THAT TIME, I HEARD THE CTLR TELL THE SMT Z 'OH, THERE YOU ARE, I THOUGHT YOU WERE COMING FROM THE W. YOU ARE #2 BEHIND THE SMA Y ON FINAL.' AT THE SAME TIME, WE OBSERVED THE SMT Z ON L BASE FOR 16R AT OUR ALT. ALTHOUGH THIS IS NOT STANDARD, I CHOSE TO MAKE A R 360 TO AVOID THE SMT Z AND XMITTED THAT INFO. I HAD NO CLRNC AND, AS THE SMT Z WAS STILL ON THE FREQ FOR THE E RWY (16L), I DID NOT KNOW WHETHER OR NOT THEY HAD SEEN US. WE THEN RE-ENTERED ON BASE TO FINAL AND RECEIVED LNDG CLRNC. IN LATER CONVERSATION WITH THE TWR, CTLR STATED THEY COULD HAVE INSTRUCTED US TO GAR, RATHER THAN SENDING THE SMT Z TO THE W TO RE-ENTER L BASE. I BELIEVE THIS COULD HAVE BEEN AVOIDED HAD THE SMT Z BEEN ON THE W FREQ.

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.