CRJ200 crew had the EFIS computer 'monitor heading' caution message come on.

Attributes
ACN	630777
Time
Date	200409
Day	Mon
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : atl.airport
State Reference	GA
Altitude	agl single value : 0
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Operator	common carrier : air carrier
Make Model Name	Regional Jet 200 ER&LR
Operating Under FAR Part	Part 121
Flight Phase	ground : taxi
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : first officer
Experience	flight time last 90 days : 240 flight time total : 4000 flight time type : 1850
ASRS Report	630777
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Experience	flight time last 90 days : 200 flight time total : 10200 flight time type : 6800
ASRS Report	630452
Events
Anomaly	aircraft equipment problem : less severe
Independent Detector	aircraft equipment other aircraft equipment : efis warning hdg other flight crewa other flight crewb
Supplementary
Problem Areas	FAA Aircraft Flight Crew Human Performance
Primary Problem	Aircraft

Narrative:

While taxiing out to runway 8R in atlanta, the EFIS computer monitor message (heading) appeared. The message was cleared. The message then returned and cleared itself. After takeoff, the message appeared again. At this point, the QRH was completed and the message cleared and did not return for the remainder of the flight. On the flight was an FAA inspector who was in the jump seat and asked questions regarding the procedure and if we were going to make a write-up of the discrepancy. Upon landing, the captain made the write-up and maintenance met the plane. Supplemental information from acn 630452: an FAA inspector on the jumpseat of the FAA national simulator program did not seem comfortable about such EFIS anomalies related to ground interferences and felt we should have done the QRH procedure and called dispatch and maintenance. I explained about lga on runway 13 even having to select 'de' mode sometimes because of interferences and he still did not seem satisfied about such anomalies.

Original NASA ASRS Text

Title: CRJ200 CREW HAD THE EFIS COMPUTER 'MONITOR HDG' CAUTION MESSAGE COME ON.

Narrative: WHILE TAXIING OUT TO RWY 8R IN ATLANTA, THE EFIS COMPUTER MONITOR MESSAGE (HDG) APPEARED. THE MESSAGE WAS CLRED. THE MESSAGE THEN RETURNED AND CLRED ITSELF. AFTER TKOF, THE MESSAGE APPEARED AGAIN. AT THIS POINT, THE QRH WAS COMPLETED AND THE MESSAGE CLRED AND DID NOT RETURN FOR THE REMAINDER OF THE FLT. ON THE FLT WAS AN FAA INSPECTOR WHO WAS IN THE JUMP SEAT AND ASKED QUESTIONS REGARDING THE PROC AND IF WE WERE GOING TO MAKE A WRITE-UP OF THE DISCREPANCY. UPON LNDG, THE CAPT MADE THE WRITE-UP AND MAINT MET THE PLANE. SUPPLEMENTAL INFO FROM ACN 630452: AN FAA INSPECTOR ON THE JUMPSEAT OF THE FAA NATIONAL SIMULATOR PROGRAM DID NOT SEEM COMFORTABLE ABOUT SUCH EFIS ANOMALIES RELATED TO GND INTERFERENCES AND FELT WE SHOULD HAVE DONE THE QRH PROC AND CALLED DISPATCH AND MAINT. I EXPLAINED ABOUT LGA ON RWY 13 EVEN HAVING TO SELECT 'DE' MODE SOMETIMES BECAUSE OF INTERFERENCES AND HE STILL DID NOT SEEM SATISFIED ABOUT SUCH ANOMALIES.

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.