BA46 crew used a closed portion of runway for takeoff.

Attributes
ACN	444530
Time
Date	199907
Day	Sun
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : dsm.airport
State Reference	IA
Altitude	agl single value : 0
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Operator	common carrier : air carrier
Make Model Name	Avro RJ85
Operating Under FAR Part	Part 121
Navigation In Use	other
Flight Phase	ground : takeoff roll
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Experience	flight time last 90 days : 250 flight time total : 8000 flight time type : 800
ASRS Report	444530
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : commercial pilot : instrument pilot : multi engine
Events
Anomaly	non adherence : published procedure non adherence : far non adherence : company policies
Independent Detector	other controllera
Resolutory Action	none taken : detected after the fact
Supplementary
Problem Areas	Airport Flight Crew Human Performance
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

We were going out on the first flight of the day after a 17 hour duty day the prior day with 9 hours rest. The departure was delayed, because of rest requirements they were attempting to expedite the departure. The first 1000 ft of the runway is notamed closed and also on the ATIS. It is not barricaded in any way. We taxied quickly to the end of the runway, not realizing it was partially closed and were cleared for takeoff. After departure, the tower asked if we had applied takeoff power prior to the new threshold. At this time I realized the mistake that I had made. A combination of fatigue and an attempt to get on schedule contributed to the incident.

Original NASA ASRS Text

Title: BA46 CREW USED A CLOSED PORTION OF RWY FOR TKOF.

Narrative: WE WERE GOING OUT ON THE FIRST FLT OF THE DAY AFTER A 17 HR DUTY DAY THE PRIOR DAY WITH 9 HRS REST. THE DEP WAS DELAYED, BECAUSE OF REST REQUIREMENTS THEY WERE ATTEMPTING TO EXPEDITE THE DEP. THE FIRST 1000 FT OF THE RWY IS NOTAMED CLOSED AND ALSO ON THE ATIS. IT IS NOT BARRICADED IN ANY WAY. WE TAXIED QUICKLY TO THE END OF THE RWY, NOT REALIZING IT WAS PARTIALLY CLOSED AND WERE CLRED FOR TKOF. AFTER DEP, THE TWR ASKED IF WE HAD APPLIED TKOF PWR PRIOR TO THE NEW THRESHOLD. AT THIS TIME I REALIZED THE MISTAKE THAT I HAD MADE. A COMBINATION OF FATIGUE AND AN ATTEMPT TO GET ON SCHEDULE CONTRIBUTED TO THE INCIDENT.

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.