With destination below minimums, pilot diverts to alternate and lands on taxiway.

Attributes
ACN	447315
Time
Date	199908
Day	Sun
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : bfi.airport
State Reference	WA
Altitude	agl single value : 0
Environment
Flight Conditions	IMC
Weather Elements	Rain Fog
Light	Daylight
Aircraft 1
Controlling Facilities	tower : bfi.tower
Operator	general aviation : personal
Make Model Name	Bonanza 35
Operating Under FAR Part	Part 91
Navigation In Use	ils localizer & glide slope : 31l
Flight Phase	landing : roll
Route In Use	approach : instrument precision
Flight Plan	IFR
Person 1
Affiliation	other
Function	flight crew : single pilot
Qualification	pilot : instrument pilot : private
Experience	flight time last 90 days : 55 flight time total : 1200 flight time type : 890
ASRS Report	447315
Events
Anomaly	incursion : taxiway non adherence : clearance non adherence : published procedure other anomaly other
Independent Detector	other flight crewa
Resolutory Action	none taken : detected after the fact
Supplementary
Problem Areas	Flight Crew Human Performance
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

ILS approach to runway 31L at bfi, broke out in low visibility and mistook taxiway for runway, landed on taxiway without incident, no other aircraft on taxiway. My intended destination was rnt, which was below minimums so I diverted to bfi. I was not prepared for the approach (digging out approach plate, etc) and the anxiety kept building to the point that when I broke out and saw the airport environment, I fixated on the taxiway and did not scan the area and spot the runway.

Original NASA ASRS Text

Title: WITH DEST BELOW MINIMUMS, PLT DIVERTS TO ALTERNATE AND LANDS ON TXWY.

Narrative: ILS APCH TO RWY 31L AT BFI, BROKE OUT IN LOW VISIBILITY AND MISTOOK TXWY FOR RWY, LANDED ON TXWY WITHOUT INCIDENT, NO OTHER ACFT ON TXWY. MY INTENDED DEST WAS RNT, WHICH WAS BELOW MINIMUMS SO I DIVERTED TO BFI. I WAS NOT PREPARED FOR THE APCH (DIGGING OUT APCH PLATE, ETC) AND THE ANXIETY KEPT BUILDING TO THE POINT THAT WHEN I BROKE OUT AND SAW THE ARPT ENVIRONMENT, I FIXATED ON THE TXWY AND DID NOT SCAN THE AREA AND SPOT THE RWY.

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.