Near midair collision between air carrier medium large transport and unknown during approach.

Attributes
ACN	104928
Time
Date	198902
Day	Mon
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : bli
State Reference	WA
Altitude	msl bound lower : 2600 msl bound upper : 3000
Environment
Flight Conditions	Marginal
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : yvr
Make Model Name	Medium Large Transport, Low Wing, 2 Turbojet Eng
Navigation In Use	Other
Flight Phase	descent : approach
Route In Use	arrival other enroute : on vectors
Flight Plan	IFR
Aircraft 2
Operator	common carrier : air carrier
Make Model Name	Any Unknown or Unlisted Aircraft Manufacturer
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 total : 14000 flight time type : 30
ASRS Report	104928
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : commercial pilot : instrument
Events
Anomaly	conflict : nmac
Independent Detector	other flight crewa
Resolutory Action	flight crew : took evasive action
Consequence	Other
Miss Distance	horizontal : 0 vertical : 200
Supplementary
Primary Problem	Flight Crew Human Performance

Narrative:

We were on a heading of 130 degrees and cleared for an ILS 16 circle to land 34 at bellingham international airport, washington vancouver approach reported traffic 12 O'clock, no altitude. (We were in the clouds). At this point autoplt captured localizer and shortly thereafter captured G/south. As we descended below the overcast the first officer shouted 'there he is.' I did not see the aircraft because it was hidden by the post between front and side window. When I saw the aircraft I disconnected the autoplt and pulled up to the right. The aircraft passed under us less than 500'. We regained our composure and landed at bellingham.

Original NASA ASRS Text

Title: NMAC BETWEEN ACR MLG AND UNKNOWN DURING APCH.

Narrative: WE WERE ON A HDG OF 130 DEGS AND CLRED FOR AN ILS 16 CIRCLE TO LAND 34 AT BELLINGHAM INTL ARPT, WASHINGTON VANCOUVER APCH RPTED TFC 12 O'CLOCK, NO ALT. (WE WERE IN THE CLOUDS). AT THIS POINT AUTOPLT CAPTURED LOC AND SHORTLY THEREAFTER CAPTURED G/S. AS WE DSNDED BELOW THE OVCST THE F/O SHOUTED 'THERE HE IS.' I DID NOT SEE THE ACFT BECAUSE IT WAS HIDDEN BY THE POST BETWEEN FRONT AND SIDE WINDOW. WHEN I SAW THE ACFT I DISCONNECTED THE AUTOPLT AND PULLED UP TO THE RIGHT. THE ACFT PASSED UNDER US LESS THAN 500'. WE REGAINED OUR COMPOSURE AND LANDED AT BELLINGHAM.

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.