A cessna 208 skydiving aircraft had a piper seneca fly near the jumpers south of pdx.

Attributes
ACN	444056
Time
Date	199907
Day	Sun
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : 10s.airport
State Reference	OR
Altitude	agl single value : 6000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : p80.tracon
Operator	general aviation : personal
Make Model Name	Caravan 1 208A
Operating Under FAR Part	Part 91
Flight Phase	descent : intermediate altitude
Flight Plan	None
Aircraft 2
Controlling Facilities	tracon : p80.tracon
Make Model Name	PA-34-200 Seneca I
Operating Under FAR Part	Part 91
Flight Phase	cruise : level
Person 1
Affiliation	other
Function	flight crew : single pilot
Qualification	pilot : instrument pilot : commercial
Experience	flight time last 90 days : 150 flight time total : 1000 flight time type : 150
ASRS Report	444056
Person 2
Affiliation	other
Function	flight crew : single pilot
Qualification	pilot : multi engine pilot : private
Events
Anomaly	conflict : airborne critical non adherence : far non adherence : published procedure
Independent Detector	other flight crewa other flight crewb
Resolutory Action	none taken : detected after the fact
Miss Distance	horizontal : 200
Supplementary
Problem Areas	Flight Crew Human Performance
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

The last skydiver was exiting my aircraft. Simultaneously, pdx approach notified me of traffic east of the drop zone, wbound. I informed approach that I had jumpers away and was descending and looking for traffic. Immediately I spotted the seneca, just about to traverse my jump run, several thousand ft below. I immediately recognized the danger of a collision and broadcast my suggestion for an immediate turn. I am not sure whether the seneca pilot received my transmission. I heard portland approach information of the skydiving center ahead and in close range. At this point he seemed confused about his position, stating that he was well south of skydive, or. (And in fact was nearly directly above.) a few seconds later, he broadcast his realization of his mistake, stating that he was looking at, and referencing his position to, portland-mulino airport, thinking that it was skydive, or. (Portland-mulino airport is 4 mi north.) 1 jumper reported an estimated 200 ft distance to the seneca during his free-fall.

Original NASA ASRS Text

Title: A CESSNA 208 SKYDIVING ACFT HAD A PIPER SENECA FLY NEAR THE JUMPERS S OF PDX.

Narrative: THE LAST SKYDIVER WAS EXITING MY ACFT. SIMULTANEOUSLY, PDX APCH NOTIFIED ME OF TFC E OF THE DROP ZONE, WBOUND. I INFORMED APCH THAT I HAD JUMPERS AWAY AND WAS DSNDING AND LOOKING FOR TFC. IMMEDIATELY I SPOTTED THE SENECA, JUST ABOUT TO TRAVERSE MY JUMP RUN, SEVERAL THOUSAND FT BELOW. I IMMEDIATELY RECOGNIZED THE DANGER OF A COLLISION AND BROADCAST MY SUGGESTION FOR AN IMMEDIATE TURN. I AM NOT SURE WHETHER THE SENECA PLT RECEIVED MY XMISSION. I HEARD PORTLAND APCH INFO OF THE SKYDIVING CTR AHEAD AND IN CLOSE RANGE. AT THIS POINT HE SEEMED CONFUSED ABOUT HIS POS, STATING THAT HE WAS WELL S OF SKYDIVE, OR. (AND IN FACT WAS NEARLY DIRECTLY ABOVE.) A FEW SECONDS LATER, HE BROADCAST HIS REALIZATION OF HIS MISTAKE, STATING THAT HE WAS LOOKING AT, AND REFING HIS POS TO, PORTLAND-MULINO ARPT, THINKING THAT IT WAS SKYDIVE, OR. (PORTLAND-MULINO ARPT IS 4 MI N.) 1 JUMPER RPTED AN ESTIMATED 200 FT DISTANCE TO THE SENECA DURING HIS FREE-FALL.

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.