<< >> NASA ASRS Report 596371, October 2003

A canadair CL65 after takeoff and less than 1000 ft the aircraft deviated from the runway heading due to EFIS warning and misalignment.

Attributes
ACN	596371
Time
Date	200310
Day	Tue
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : atl.airport
State Reference	GA
Altitude	msl single value : 1000
Environment
Flight Conditions	IMC
Light	Dawn
Aircraft 1
Controlling Facilities	tracon : a80.tracon
Operator	common carrier : air carrier
Make Model Name	Regional Jet CL65, Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Navigation In Use	other
Flight Phase	climbout : initial
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : atp pilot : multi engine
Experience	flight time last 90 days : 30 flight time total : 8000 flight time type : 450
ASRS Report	596371
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Events
Anomaly	aircraft equipment problem : less severe non adherence : published procedure non adherence : far other spatial deviation
Independent Detector	other flight crewa other flight crewb
Resolutory Action	none taken : detected after the fact
Consequence	other
Supplementary
Problem Areas	Flight Crew Human Performance Aircraft
Primary Problem	Aircraft

Narrative:

Once airborne after takeoff, we received an EFIS miscomparator message, which put our heading in a temporarily unreliable situation and the aircraft was a non GPS model. Sometimes, if there is a lot of metal around certain airports, this situation can occur momentarily and then it realigns itself. There was no conflict.

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Original NASA ASRS Text

Title: A CANADAIR CL65 AFTER TKOF AND LESS THAN 1000 FT THE ACFT DEVIATED FROM THE RWY HEADING DUE TO EFIS WARNING AND MISALIGNMENT.

Narrative: ONCE AIRBORNE AFTER TKOF, WE RECEIVED AN EFIS MISCOMPARATOR MESSAGE, WHICH PUT OUR HEADING IN A TEMPORARILY UNRELIABLE SIT AND THE ACFT WAS A NON GPS MODEL. SOMETIMES, IF THERE IS A LOT OF METAL AROUND CERTAIN ARPTS, THIS SIT CAN OCCUR MOMENTARILY AND THEN IT REALIGNS ITSELF. THERE WAS NO CONFLICT.

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.