ERJ175 flight crew inadvertently taxied onto runway after missing assigned taxiway.

Attributes
ACN	766380
Time
Date	200712
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : srq.airport
State Reference	FL
Altitude	agl single value : 0
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Operator	common carrier : air carrier
Make Model Name	EMB ERJ 170/175 ER&LR
Operating Under FAR Part	Part 121
Flight Phase	ground : taxi
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp pilot : commercial
Experience	flight time last 90 days : 270 flight time total : 15000 flight time type : 600
ASRS Report	766380
Events
Anomaly	incursion : runway non adherence : clearance
Independent Detector	other flight crewa
Resolutory Action	none taken : detected after the fact
Supplementary
Problem Areas	Company Flight Crew Human Performance
Primary Problem	Flight Crew Human Performance

Narrative:

Taxiing out from the ramp at sarasota/bradenton airport I was given instruction from ground control to taxi txwys a; B; hold short runway 14/32. I missed taxiway B and turned on to runway 4/22; and held short of runway 14/32. Ground control then gave instructions to cross runway 14/32 and taxi taxiway C to runway 14. I do not know why the first officer did not back me up. This was the last leg of a 4 day trip that turned out to be 26 hours. I was mentally fatigued; I had hit a wall; mentally. There were no planes taking off or landing on runway 4/22. There were no flashing yellow hold short lights for runway 4/22; if there had been; I probably would have stopped short of the runway; and not had a runway incursion. Overall I feel strongly that fatigue was the main reason for this incursion.

Original NASA ASRS Text

Title: ERJ175 FLT CREW INADVERTENTLY TAXIED ONTO RWY AFTER MISSING ASSIGNED TXWY.

Narrative: TAXIING OUT FROM THE RAMP AT SARASOTA/BRADENTON ARPT I WAS GIVEN INSTRUCTION FROM GND CTL TO TAXI TXWYS A; B; HOLD SHORT RWY 14/32. I MISSED TXWY B AND TURNED ON TO RWY 4/22; AND HELD SHORT OF RWY 14/32. GND CTL THEN GAVE INSTRUCTIONS TO CROSS RWY 14/32 AND TAXI TXWY C TO RWY 14. I DO NOT KNOW WHY THE FO DID NOT BACK ME UP. THIS WAS THE LAST LEG OF A 4 DAY TRIP THAT TURNED OUT TO BE 26 HRS. I WAS MENTALLY FATIGUED; I HAD HIT A WALL; MENTALLY. THERE WERE NO PLANES TAKING OFF OR LNDG ON RWY 4/22. THERE WERE NO FLASHING YELLOW HOLD SHORT LIGHTS FOR RWY 4/22; IF THERE HAD BEEN; I PROBABLY WOULD HAVE STOPPED SHORT OF THE RWY; AND NOT HAD A RWY INCURSION. OVERALL I FEEL STRONGLY THAT FATIGUE WAS THE MAIN REASON FOR THIS INCURSION.

Data retrieved from NASA's ASRS site as of January 2009 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.