A C421 pilot, taxiing for takeoff at hwd, taxied into position when he was cleared to hold short.

Attributes
ACN	535097
Time
Date	200201
Day	Fri
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : hwd.airport
State Reference	CA
Altitude	agl single value : 0
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Operator	general aviation : personal
Make Model Name	Golden Eagle 421
Operating Under FAR Part	Part 91
Flight Phase	ground : taxi ground : holding
Flight Plan	IFR
Person 1
Affiliation	other
Function	flight crew : single pilot
Qualification	pilot : multi engine pilot : commercial pilot : cfi pilot : instrument
Experience	flight time last 90 days : 20 flight time total : 900 flight time type : 300
ASRS Report	535097
Person 2
Affiliation	government : faa
Function	controller : local
Events
Anomaly	incursion : runway non adherence : published procedure non adherence : clearance non adherence : far
Independent Detector	other controllera
Resolutory Action	controller : issued new clearance
Consequence	faa : reviewed incident with flight crew
Supplementary
Problem Areas	Airport Flight Crew Human Performance
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

With parallel runways in operation at hayward, ca (hwd), and while awaiting IFR release, I was told by ATC to 'taxi across runway 10L, hold short runway 10R, awaiting IFR release.' I taxied across runway 10L and into position on runway 10R. ATC (hwd tower) saw me in position on runway 10R, told me my instructions were to hold short runway 10R, and asked me to taxi clear of runway. High pilot workload -- single pilot, complex aircraft, preparing for IFR departure in complex airspace (underlying sfo class B and oak class C). Runway/taxiway environment -- very small hold short area between runways is easily missed. Airport environment -- busy time of day at busy training airport, therefore busy frequency with a sense of urgency to expedite ground operations on/off runways. My high workload caused me to miss a critical instruction from ATC. Better markings, especially hold short flashing lights might have prevented me from taxiing onto an active runway.

Original NASA ASRS Text

Title: A C421 PLT, TAXIING FOR TKOF AT HWD, TAXIED INTO POS WHEN HE WAS CLRED TO HOLD SHORT.

Narrative: WITH PARALLEL RWYS IN OP AT HAYWARD, CA (HWD), AND WHILE AWAITING IFR RELEASE, I WAS TOLD BY ATC TO 'TAXI ACROSS RWY 10L, HOLD SHORT RWY 10R, AWAITING IFR RELEASE.' I TAXIED ACROSS RWY 10L AND INTO POS ON RWY 10R. ATC (HWD TWR) SAW ME IN POS ON RWY 10R, TOLD ME MY INSTRUCTIONS WERE TO HOLD SHORT RWY 10R, AND ASKED ME TO TAXI CLR OF RWY. HIGH PLT WORKLOAD -- SINGLE PLT, COMPLEX ACFT, PREPARING FOR IFR DEP IN COMPLEX AIRSPACE (UNDERLYING SFO CLASS B AND OAK CLASS C). RWY/TXWY ENVIRONMENT -- VERY SMALL HOLD SHORT AREA BTWN RWYS IS EASILY MISSED. ARPT ENVIRONMENT -- BUSY TIME OF DAY AT BUSY TRAINING ARPT, THEREFORE BUSY FREQ WITH A SENSE OF URGENCY TO EXPEDITE GND OPS ON/OFF RWYS. MY HIGH WORKLOAD CAUSED ME TO MISS A CRITICAL INSTRUCTION FROM ATC. BETTER MARKINGS, ESPECIALLY HOLD SHORT FLASHING LIGHTS MIGHT HAVE PREVENTED ME FROM TAXIING ONTO AN ACTIVE 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.