FK10 crew was unable to obtain rated thrust on takeoff roll from #2 engine.

Attributes
ACN	416070
Time
Date	199810
Day	Thu
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : dfw
State Reference	TX
Altitude	agl bound lower : 0 agl bound upper : 0
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tower : rno
Operator	common carrier : air carrier
Make Model Name	Fokker 100
Operating Under FAR Part	Part 121
Navigation In Use	Other Other
Flight Phase	climbout : takeoff
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
ASRS Report	416070
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : commercial pilot : instrument
Events
Anomaly	aircraft equipment problem : less severe other anomaly other
Independent Detector	other flight crewa
Resolutory Action	none taken : insufficient time
Consequence	Other
Supplementary
Primary Problem	Aircraft
Air Traffic Incident	other

Narrative:

The aircraft lift dumper system was placarded inoperative. This increases the distances required for lndgs or aborts. Outside air temperature was 29 degrees C and target maximum power EPR was 1.71. I was the captain and the PNF. On takeoff at the autothrottle declutch, the #1 engine was 1.68 EPR and the #2 was 1.69. I manually advanced the throttles. Above 100 KIAS the MFDU displayed computed maximum EPR dropped to 1.70. #2 engine was 1.70 and 1.71 EPR and #1 was 1.69. I again manually advanced the #1 throttle. By the time I recognized the throttle was hard against the forward stop the airspeed was rapidly approaching V1. I deemed it safer to continue the takeoff .01 EPR below maximum power than to perform a no lift dumper high speed abort. Takeoff was completed normally. I briefed the first officer on the problem after the sterile period was over. I entered the problem in the maintenance log and had the engine checked at the next point of landing.

Original NASA ASRS Text

Title: FK10 CREW WAS UNABLE TO OBTAIN RATED THRUST ON TKOF ROLL FROM #2 ENG.

Narrative: THE ACFT LIFT DUMPER SYS WAS PLACARDED INOP. THIS INCREASES THE DISTANCES REQUIRED FOR LNDGS OR ABORTS. OUTSIDE AIR TEMP WAS 29 DEGS C AND TARGET MAX PWR EPR WAS 1.71. I WAS THE CAPT AND THE PNF. ON TKOF AT THE AUTOTHROTTLE DECLUTCH, THE #1 ENG WAS 1.68 EPR AND THE #2 WAS 1.69. I MANUALLY ADVANCED THE THROTTLES. ABOVE 100 KIAS THE MFDU DISPLAYED COMPUTED MAX EPR DROPPED TO 1.70. #2 ENG WAS 1.70 AND 1.71 EPR AND #1 WAS 1.69. I AGAIN MANUALLY ADVANCED THE #1 THROTTLE. BY THE TIME I RECOGNIZED THE THROTTLE WAS HARD AGAINST THE FORWARD STOP THE AIRSPD WAS RAPIDLY APCHING V1. I DEEMED IT SAFER TO CONTINUE THE TKOF .01 EPR BELOW MAX PWR THAN TO PERFORM A NO LIFT DUMPER HIGH SPD ABORT. TKOF WAS COMPLETED NORMALLY. I BRIEFED THE FO ON THE PROB AFTER THE STERILE PERIOD WAS OVER. I ENTERED THE PROB IN THE MAINT LOG AND HAD THE ENG CHKED AT THE NEXT POINT OF LNDG.

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.