SF34 on approach to dlg experienced near midair collision with PA12.

Attributes
ACN	587882
Time
Date	200306
Day	Sun
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : dlg.airport
State Reference	AK
Altitude	msl single value : 500
Environment
Flight Conditions	Marginal
Weather Elements	Fog
Light	Daylight
Aircraft 1
Controlling Facilities	artcc : zan.artcc
Operator	common carrier : air carrier
Make Model Name	Saab-Scania Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Navigation In Use	other
Flight Phase	descent : approach
Route In Use	approach : instrument precision
Flight Plan	IFR
Aircraft 2
Controlling Facilities	artcc : zan.artcc
Operator	general aviation : personal
Make Model Name	PA-18/19 Super Cub
Operating Under FAR Part	Part 91
Flight Phase	descent : approach landing : roll
Route In Use	approach : straight in approach : traffic pattern
Flight Plan	VFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp pilot : cfi
Experience	flight time last 90 days : 400 flight time total : 22700 flight time type : 200
ASRS Report	587882
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Events
Anomaly	conflict : nmac conflict : airborne critical non adherence : far non adherence : published procedure
Independent Detector	other flight crewa
Resolutory Action	flight crew : took evasive action
Miss Distance	horizontal : 1500
Supplementary
Problem Areas	Flight Crew Human Performance Weather Aircraft
Primary Problem	Flight Crew Human Performance

Narrative:

We had been cleared for a GPS runway 1 approach at dlg. Between subwa and the end of runway 1 we broke out of the clouds at approximately 500 ft. I immediately spotted a cub at our 12:30 O'clock position, less than 1/4 mi in front of us. I called traffic to first officer and started a right turn to avoid contact with aircraft. I continued in a 360 degree turn in VMC and landed after the cub had cleared the runway. My first officer had made several position reports during the course of our approach which should have given everyone notice of our position. The tops were at about 3000 ft and bases at about 500 ft on the approach path.

Original NASA ASRS Text

Title: SF34 ON APCH TO DLG EXPERIENCED NMAC WITH PA12.

Narrative: WE HAD BEEN CLRED FOR A GPS RWY 1 APCH AT DLG. BTWN SUBWA AND THE END OF RWY 1 WE BROKE OUT OF THE CLOUDS AT APPROX 500 FT. I IMMEDIATELY SPOTTED A CUB AT OUR 12:30 O'CLOCK POS, LESS THAN 1/4 MI IN FRONT OF US. I CALLED TFC TO FO AND STARTED A R TURN TO AVOID CONTACT WITH ACFT. I CONTINUED IN A 360 DEG TURN IN VMC AND LANDED AFTER THE CUB HAD CLRED THE RWY. MY FO HAD MADE SEVERAL POS RPTS DURING THE COURSE OF OUR APCH WHICH SHOULD HAVE GIVEN EVERYONE NOTICE OF OUR POS. THE TOPS WERE AT ABOUT 3000 FT AND BASES AT ABOUT 500 FT ON THE APCH PATH.

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.