Flight crew of a DHC8 took evasive action and went around after TCASII RA and observation of a cessna turning final in front of them at a non tower airport.

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Attributes
ACN	490967
Time
Date	200011
Day	Fri
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : puw.airport
State Reference	WA
Altitude	agl single value : 500
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tower : ont.tower
Operator	common carrier : air carrier
Make Model Name	Dash 8-100
Operating Under FAR Part	Part 121
Navigation In Use	other
Route In Use	approach : visual
Flight Plan	IFR
Aircraft 2
Operator	general aviation : personal
Make Model Name	Cessna Single Piston Undifferentiated or Other Model
Operating Under FAR Part	Part 91
Navigation In Use	other
Flight Phase	descent : approach
Route In Use	approach : traffic pattern
Person 1
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : instrument pilot : commercial pilot : cfi pilot : multi engine
Experience	flight time last 90 days : 200 flight time total : 1090 flight time type : 350
ASRS Report	490967
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Events
Anomaly	conflict : airborne less severe other anomaly other
Independent Detector	aircraft equipment : tcas other flight crewa other flight crewb
Resolutory Action	flight crew : executed go around flight crew : took precautionary avoidance action
Consequence	Other
Miss Distance	horizontal : 3000 vertical : 0
Supplementary
Problem Areas	Flight Crew Human Performance
Primary Problem	Flight Crew Human Performance

Narrative:

Our aircraft was cleared for a visual approach to the puw airport. At that time we were 11 NM to the southwest. ATC advised us of 2 targets near the airport. We switched to puw CTAF and announced our position and intention to make a straight-in final to runway 5. 1 aircraft responded by stating they were departing the pattern on the downwind. Our company has an advisory at puw, and pointed out that aircraft and deemed it no factor for us. During the approach we made several reports and no other aircraft responded. On our TCASII we had another aircraft ahead of us and approximately the same altitude. However, we could not get a visual contact. When we were about 3/4 mi final a single engine cessna turned onto final about 1/2 mi in front of us. We executed a go around and entered the pattern for runway 5 on the upwind leg. The cessna made a stop and go. We mentioned to him what just occurred. His reaction (his first radio transmission) made it seem like he was obvious to the fact that we were in the area. We continued in the pattern and landed, as did the cessna.

Original NASA ASRS Text

Title: FLC OF A DHC8 TOOK EVASIVE ACTION AND WENT AROUND AFTER TCASII RA AND OBSERVATION OF A CESSNA TURNING FINAL IN FRONT OF THEM AT A NON TWR ARPT.

Narrative: OUR ACFT WAS CLRED FOR A VISUAL APCH TO THE PUW ARPT. AT THAT TIME WE WERE 11 NM TO THE SW. ATC ADVISED US OF 2 TARGETS NEAR THE ARPT. WE SWITCHED TO PUW CTAF AND ANNOUNCED OUR POS AND INTENTION TO MAKE A STRAIGHT-IN FINAL TO RWY 5. 1 ACFT RESPONDED BY STATING THEY WERE DEPARTING THE PATTERN ON THE DOWNWIND. OUR COMPANY HAS AN ADVISORY AT PUW, AND POINTED OUT THAT ACFT AND DEEMED IT NO FACTOR FOR US. DURING THE APCH WE MADE SEVERAL RPTS AND NO OTHER ACFT RESPONDED. ON OUR TCASII WE HAD ANOTHER ACFT AHEAD OF US AND APPROX THE SAME ALT. HOWEVER, WE COULD NOT GET A VISUAL CONTACT. WHEN WE WERE ABOUT 3/4 MI FINAL A SINGLE ENG CESSNA TURNED ONTO FINAL ABOUT 1/2 MI IN FRONT OF US. WE EXECUTED A GAR AND ENTERED THE PATTERN FOR RWY 5 ON THE UPWIND LEG. THE CESSNA MADE A STOP AND GO. WE MENTIONED TO HIM WHAT JUST OCCURRED. HIS REACTION (HIS FIRST RADIO XMISSION) MADE IT SEEM LIKE HE WAS OBVIOUS TO THE FACT THAT WE WERE IN THE AREA. WE CONTINUED IN THE PATTERN AND LANDED, AS DID THE CESSNA.

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.