A CL65 flight crew on takeoff roll rejected the takeoff when they received a rudder confign warning.

Attributes
ACN	718677
Time
Date	200612
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : zzz.airport
State Reference	US
Altitude	agl single value : 0
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Operator	common carrier : air carrier
Make Model Name	Regional Jet CL65 Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Flight Phase	ground : takeoff roll
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : cfi pilot : multi engine pilot : atp
Experience	flight time last 90 days : 156 flight time total : 5500 flight time type : 1100
ASRS Report	718677
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Events
Anomaly	aircraft equipment problem : less severe other anomaly other
Independent Detector	aircraft equipment other aircraft equipment : rudder config warning
Resolutory Action	other
Supplementary
Problem Areas	Aircraft
Primary Problem	Aircraft

Narrative:

Crew took the active; all trim indications were green with rudder trim slightly left of center. Upon application of takeoff thrust; the rudder trim indicator went white and we concurrently received an aural confign rudder and master warning message. Takeoff was aborted and we taxied off the runway. We contacted operations and then talked to maintenance control. They informed us that this has happened before and gave us a procedure to clear the new write-up. It seems that the application of power can wiggle the rudder just enough that if it is not centered but close to what is not considered a takeoff position; even though it is trimmed for flight; it will generate the confign error message.

Original NASA ASRS Text

Title: A CL65 FLT CREW ON TKOF ROLL REJECTED THE TKOF WHEN THEY RECEIVED A RUDDER CONFIGN WARNING.

Narrative: CREW TOOK THE ACTIVE; ALL TRIM INDICATIONS WERE GREEN WITH RUDDER TRIM SLIGHTLY L OF CTR. UPON APPLICATION OF TKOF THRUST; THE RUDDER TRIM INDICATOR WENT WHITE AND WE CONCURRENTLY RECEIVED AN AURAL CONFIGN RUDDER AND MASTER WARNING MESSAGE. TKOF WAS ABORTED AND WE TAXIED OFF THE RWY. WE CONTACTED OPS AND THEN TALKED TO MAINT CTL. THEY INFORMED US THAT THIS HAS HAPPENED BEFORE AND GAVE US A PROC TO CLR THE NEW WRITE-UP. IT SEEMS THAT THE APPLICATION OF PWR CAN WIGGLE THE RUDDER JUST ENOUGH THAT IF IT IS NOT CTRED BUT CLOSE TO WHAT IS NOT CONSIDERED A TKOF POS; EVEN THOUGH IT IS TRIMMED FOR FLT; IT WILL GENERATE THE CONFIGN ERROR MESSAGE.

Data retrieved from NASA's ASRS site as of January 2009 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.