An air carrier medium large transport had a low speed takeoff aborted due to erroneous EPR readings.

Attributes
ACN	356575
Time
Date	199612
Day	Tue
Local Time Of Day	1801 To 2400
Place
Locale Reference	airport : msp
State Reference	MN
Altitude	agl bound lower : 0 agl bound upper : 0
Environment
Flight Conditions	Marginal
Light	Night
Aircraft 1
Operator	common carrier : air carrier
Make Model Name	Commercial Fixed Wing
Operating Under FAR Part	Part 121
Flight Phase	other
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : atp
Experience	flight time last 90 days : 90 flight time total : 7700 flight time type : 90
ASRS Report	356575
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Events
Anomaly	aircraft equipment problem : less severe
Independent Detector	aircraft equipment other aircraft equipment : unspecified other flight crewa
Resolutory Action	flight crew : overcame equipment problem
Consequence	Other
Supplementary
Primary Problem	Aircraft
Air Traffic Incident	Pilot Deviation other

Narrative:

Due to deice and icing conditions we received erroneous EPR as takeoff power was set. Aircraft was just beginning roll (less than 15 KTS), when anomaly noted, so we called the abort to tower and cleared the runway. After running the engines for about 10 seconds above 70%, indications returned to normal. Takeoff was initiated again and was normal. Queried captain about release, re-release, or maintenance write-up. He said it was not necessary. I thought it was, but did not pursue the thought, as I am new to the carrier and not familiar with all maintenance procedures. One contributing factor was time of day. There were significant delays due to snow, and we were not deiced till nearly XA00. I have made a greater effort to know our procedures regarding maintenance and logbook write-ups.

Original NASA ASRS Text

Title: AN ACR MLG HAD A LOW SPD TKOF ABORTED DUE TO ERRONEOUS EPR READINGS.

Narrative: DUE TO DEICE AND ICING CONDITIONS WE RECEIVED ERRONEOUS EPR AS TKOF PWR WAS SET. ACFT WAS JUST BEGINNING ROLL (LESS THAN 15 KTS), WHEN ANOMALY NOTED, SO WE CALLED THE ABORT TO TWR AND CLRED THE RWY. AFTER RUNNING THE ENGS FOR ABOUT 10 SECONDS ABOVE 70%, INDICATIONS RETURNED TO NORMAL. TKOF WAS INITIATED AGAIN AND WAS NORMAL. QUERIED CAPT ABOUT RELEASE, RE-RELEASE, OR MAINT WRITE-UP. HE SAID IT WAS NOT NECESSARY. I THOUGHT IT WAS, BUT DID NOT PURSUE THE THOUGHT, AS I AM NEW TO THE CARRIER AND NOT FAMILIAR WITH ALL MAINT PROCS. ONE CONTRIBUTING FACTOR WAS TIME OF DAY. THERE WERE SIGNIFICANT DELAYS DUE TO SNOW, AND WE WERE NOT DEICED TILL NEARLY XA00. I HAVE MADE A GREATER EFFORT TO KNOW OUR PROCS REGARDING MAINT AND LOGBOOK WRITE-UPS.

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.