An air carrier medium large transport aborted its takeoff due to a faulty EPR indication.

Attributes
ACN	231449
Time
Date	199301
Day	Sun
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : cvg
State Reference	OH
Altitude	agl bound lower : 0 agl bound upper : 0
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Operator	common carrier : air carrier
Make Model Name	Medium Large Transport, Low Wing, 2 Turbojet Eng
Flight Phase	climbout : takeoff other
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : flight engineer pilot : commercial pilot : instrument pilot : atp pilot : cfi
Experience	flight time last 90 days : 200 flight time total : 12400 flight time type : 6000
ASRS Report	231449
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : commercial pilot : instrument
Events
Anomaly	aircraft equipment problem : critical other anomaly other
Independent Detector	aircraft equipment other aircraft equipment : unspecified other flight crewa
Resolutory Action	flight crew : rejected takeoff
Consequence	Other
Supplementary
Primary Problem	Aircraft
Air Traffic Incident	other

Narrative:

Normal full power takeoff -- 2.04 EPR, 93 percent N1, 470 degrees C egt 92.5 percent N2 (runway 27) V1 -- 114 KTS. At 110 KTS, left EPR dropped to 1.6. Aborted takeoff, turned off on taxiway at the end of runway, called flaps up, after landing check, directed first officer to tell ground control nature of abort and no need for assistance. Informed lead flight attendant of situation, made PA to passenger, first officer called station to return to gate. Brake cooling chart showed zone ii, normal zone -- 30 min cooling. Station rerted passenger on another flight. Maintenance later discovered broken pt-2 probe tube behind engine nose bullet.

Original NASA ASRS Text

Title: AN ACR MLG ABORTED ITS TKOF DUE TO A FAULTY EPR INDICATION.

Narrative: NORMAL FULL PWR TKOF -- 2.04 EPR, 93 PERCENT N1, 470 DEGS C EGT 92.5 PERCENT N2 (RWY 27) V1 -- 114 KTS. AT 110 KTS, L EPR DROPPED TO 1.6. ABORTED TKOF, TURNED OFF ON TXWY AT THE END OF RWY, CALLED FLAPS UP, AFTER LNDG CHK, DIRECTED FO TO TELL GND CTL NATURE OF ABORT AND NO NEED FOR ASSISTANCE. INFORMED LEAD FLT ATTENDANT OF SIT, MADE PA TO PAX, FO CALLED STATION TO RETURN TO GATE. BRAKE COOLING CHART SHOWED ZONE II, NORMAL ZONE -- 30 MIN COOLING. STATION RERTED PAX ON ANOTHER FLT. MAINT LATER DISCOVERED BROKEN PT-2 PROBE TUBE BEHIND ENG NOSE BULLET.

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.