Flight crew gets takeoff warning horn, aborts takeoff and returns to the gate.

Attributes
ACN	314585
Time
Date	199508
Day	Thu
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : fll
State Reference	FL
Altitude	agl bound lower : 0 agl bound upper : 0
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tower : ewr
Operator	common carrier : air carrier
Make Model Name	B737-200
Operating Under FAR Part	Part 121
Flight Phase	climbout : takeoff other
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Experience	flight time last 90 days : 200 flight time total : 10000 flight time type : 4000
ASRS Report	314585
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : flight engineer pilot : atp pilot : cfi
Experience	flight time last 90 days : 240 flight time total : 6500 flight time type : 2000
ASRS Report	314767
Events
Anomaly	aircraft equipment problem : critical
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:

As power was advanced #1 EPR circuit breaker popped. Was reset, but #1 and #2 EPR never stabilized together. Abort was initiated at less than 60 KTS. Callback conversation with reporter revealed the following information: the reporter stated he was flying a B737-100 or -200. He could not remember which. The airline has a procedure that prior to leaving the gate the EPR circuit breaker on 1 of the 2 engines is pulled and the throttles are pushed up for a takeoff warning check. The circuit breaker is then reset. This means the circuit breakers get cycled upwards of 10 times a day. The reporter suspects the circuit breakers get worn out and don't function normally. In this case, after the abort the reporter took the airplane back to the gate and deplaned the passenger. Maintenance took the airplane out to the runup area to make sure everything was normal prior to signing the aircraft off. The airplane then was reboarded and departed without further problem. The WX was rainy. Blustery winds caused the EPR's to fluctuate a little.

Original NASA ASRS Text

Title: FLC GETS TKOF WARNING HORN, ABORTS TKOF AND RETURNS TO THE GATE.

Narrative: AS PWR WAS ADVANCED #1 EPR CIRCUIT BREAKER POPPED. WAS RESET, BUT #1 AND #2 EPR NEVER STABILIZED TOGETHER. ABORT WAS INITIATED AT LESS THAN 60 KTS. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO: THE RPTR STATED HE WAS FLYING A B737-100 OR -200. HE COULD NOT REMEMBER WHICH. THE AIRLINE HAS A PROC THAT PRIOR TO LEAVING THE GATE THE EPR CIRCUIT BREAKER ON 1 OF THE 2 ENGS IS PULLED AND THE THROTTLES ARE PUSHED UP FOR A TKOF WARNING CHK. THE CIRCUIT BREAKER IS THEN RESET. THIS MEANS THE CIRCUIT BREAKERS GET CYCLED UPWARDS OF 10 TIMES A DAY. THE RPTR SUSPECTS THE CIRCUIT BREAKERS GET WORN OUT AND DON'T FUNCTION NORMALLY. IN THIS CASE, AFTER THE ABORT THE RPTR TOOK THE AIRPLANE BACK TO THE GATE AND DEPLANED THE PAX. MAINT TOOK THE AIRPLANE OUT TO THE RUNUP AREA TO MAKE SURE EVERYTHING WAS NORMAL PRIOR TO SIGNING THE ACFT OFF. THE AIRPLANE THEN WAS REBOARDED AND DEPARTED WITHOUT FURTHER PROB. THE WX WAS RAINY. BLUSTERY WINDS CAUSED THE EPR'S TO FLUCTUATE A LITTLE.

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.