A CRJ200 first officer reported a track deviation after departing dtw runway 21R because the aircraf...

Attributes
ACN	884540
Time
Date	201004
Local Time Of Day	1801-2400
Place
Locale Reference	DTW.Airport
State Reference	MI
Environment
Flight Conditions	VMC
Light	Dusk
Aircraft 1
Make Model Name	Regional Jet CL65 Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Flight Phase	Initial Climb
Route In Use	Vectors
Flight Plan	IFR
Component
Aircraft Component	Compass (HSI/ETC)
Person 1
Function	Pilot Not Flying First Officer
Experience	Flight Crew Last 90 Days 200 Flight Crew Total 13290 Flight Crew Type 5000
Events
Anomaly	Aircraft Equipment Problem Less Severe Deviation - Procedural Clearance Deviation - Track / Heading All Types

Narrative:

We lined up for takeoff on runway 21R at dtw; tookoff; and turned to our assigned heading of left 190 degrees. In the turn we got a EFIS dis con and dg indicators on both sides and at that time; on our assigned heading; ATC asked us what heading we were given; we told him 190 and he came back and said that our navigation seemed to be slightly questionable. We told him we were having a EFIS mis con heading navigation issue and we were correcting at this time and I asked if it was an issue; he said no. Well on runway 21R in dtw there seems to be an anomaly that affects the heading as you take off and I guess that the best thing to do is depart in the dg mode to keep from the EFIS mis con. I think this problem should be looked into as there are other crews that have had issues in dtw that we spoke to from other air carriers flying the crj.

Original NASA ASRS Text

Title: A CRJ200 First Officer reported a track deviation after departing DTW Runway 21R because the aircraft's heading system malfunctioned and indicated EFIS DIS CON. The Reporter believes a metal mass near the runway's end may be a factor.

Narrative: We lined up for takeoff on Runway 21R at DTW; tookoff; and turned to our assigned heading of left 190 degrees. In the turn we got a EFIS DIS CON and DG indicators on both sides and at that time; on our assigned heading; ATC asked us what heading we were given; we told him 190 and he came back and said that our navigation seemed to be slightly questionable. We told him we were having a EFIS MIS CON heading navigation issue and we were correcting at this time and I asked if it was an issue; he said no. Well on Runway 21R in DTW there seems to be an anomaly that affects the heading as you take off and I guess that the best thing to do is depart in the DG mode to keep from the EFIS MIS CON. I think this problem should be looked into as there are other crews that have had issues in DTW that we spoke to from other air carriers flying the CRJ.

Data retrieved from NASA's ASRS site as of April 2012 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.

A CRJ200 first officer reported a track deviation after departing dtw runway 21R because the aircraft's heading system malfunctioned and indicated EFIS dis con. The reporter believes a metal mass near the runway's end may be a factor.