Near midair collision with small aircraft overflying the PDT VOR. No traffic advisory given.

Attributes
ACN	84120
Time
Date	198803
Day	Fri
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : pdt
State Reference	OR
Altitude	msl bound lower : 5000 msl bound upper : 6000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	artcc : zse
Operator	common carrier : air carrier
Make Model Name	Small Transport, Low Wing, 2 Turboprop Eng
Flight Phase	descent other
Route In Use	approach : visual
Flight Plan	IFR
Aircraft 2
Operator	general aviation : personal
Make Model Name	Small Aircraft, Low Wing, 1 Eng, Fixed Gear
Flight Phase	cruise other
Flight Plan	None
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Experience	flight time last 90 days : 200 flight time total : 8000
ASRS Report	84120
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : commercial pilot : instrument
Experience	flight time last 90 days : 200 flight time total : 3100
ASRS Report	83948
Events
Anomaly	conflict : nmac
Independent Detector	other flight crewa
Resolutory Action	flight crew : took evasive action
Consequence	Other
Miss Distance	horizontal : 100 vertical : 100
Supplementary
Primary Problem	Flight Crew Human Performance

Narrative:

Descending from altitude for a vap to pendleton, or. As we xed the VOR, a near midair occurred with an small aircraft. We had been cleared from center frequency to PDT tower. Center had issued prior traffic information at 2 O'clock, no factor. This aircraft was at 10 O'clock and had not been called. On takeoff from pdx, center had us in radar contact. Another factor perhaps was the high rate of descent requiring attention inside instead of outside. Callback conversation with reporter revealed the following: had departed pdx and was in radar contact with ZSE the entire route. Had spotted the traffic pointed out at 2 O'clock, but no mention was made of the 10 O'clock. Advised reporter it is possible the small aircraft was not using a transponder and was being picked up on the radar. He estimated the miss distance as 100'.

Original NASA ASRS Text

Title: NMAC WITH SMA OVERFLYING THE PDT VOR. NO TRAFFIC ADVISORY GIVEN.

Narrative: DSNDING FROM ALT FOR A VAP TO PENDLETON, OR. AS WE XED THE VOR, A NEAR MIDAIR OCCURRED WITH AN SMA. WE HAD BEEN CLRED FROM CENTER FREQ TO PDT TWR. CENTER HAD ISSUED PRIOR TFC INFO AT 2 O'CLOCK, NO FACTOR. THIS ACFT WAS AT 10 O'CLOCK AND HAD NOT BEEN CALLED. ON TKOF FROM PDX, CENTER HAD US IN RADAR CONTACT. ANOTHER FACTOR PERHAPS WAS THE HIGH RATE OF DSCNT REQUIRING ATTN INSIDE INSTEAD OF OUTSIDE. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING: HAD DEPARTED PDX AND WAS IN RADAR CONTACT WITH ZSE THE ENTIRE ROUTE. HAD SPOTTED THE TFC POINTED OUT AT 2 O'CLOCK, BUT NO MENTION WAS MADE OF THE 10 O'CLOCK. ADVISED RPTR IT IS POSSIBLE THE SMA WAS NOT USING A TRANSPONDER AND WAS BEING PICKED UP ON THE RADAR. HE ESTIMATED THE MISS DISTANCE AS 100'.

Data retrieved from NASA's ASRS site as of August 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.