|37000 Feet||Browse and search NASA's
Aviation Safety Reporting System
|Local Time Of Day||1201 To 1800|
|Locale Reference||atc facility : bzm|
airport : hky
|Altitude||msl bound lower : 4000|
msl bound upper : 9500
|Controlling Facilities||artcc : ztl|
|Operator||general aviation : personal|
|Make Model Name||Small Aircraft, High Wing, 1 Eng, Fixed Gear|
|Flight Phase||cruise other|
|Function||flight crew : single pilot|
|Qualification||pilot : instrument|
pilot : commercial
|Experience||flight time last 90 days : 35|
flight time total : 1900
flight time type : 1200
|Affiliation||government : faa|
|Function||controller : radar|
|Qualification||controller : radar|
|Anomaly||aircraft equipment problem : critical|
other anomaly other
|Independent Detector||other other : unspecified cockpit|
|Resolutory Action||aircraft : equipment problem dissipated|
controller : provided flight assist
In smooth air, compass instantly tilted maximum tilt all the way to the stops. Wings level. Made turn to right, then turn to left. Compass remained tilted -- totally useless. Contacted ZTL for vector to hickory with an IFR descent which was approved. Upon reaching 9000 ft compass started swinging back and forth. This action continued until approximately 4000 ft. After passing 4000 ft, compass returned to normal axis. Heading at that time was approximately 60 degree. Turbulence during the descent was present. Compass is full of fluid and properly set. Magnetic disturbance was somewhere nearby.
Original NASA ASRS Text
Title: SMA PLT EXPERIENCES EXTREME MAGNETIC COMPASS DEVS. RECEIVES CENTER ASSIST TO DSND. COMPASS AGAIN FUNCTIONS PROPERLY.
Narrative: IN SMOOTH AIR, COMPASS INSTANTLY TILTED MAX TILT ALL THE WAY TO THE STOPS. WINGS LEVEL. MADE TURN TO R, THEN TURN TO L. COMPASS REMAINED TILTED -- TOTALLY USELESS. CONTACTED ZTL FOR VECTOR TO HICKORY WITH AN IFR DSCNT WHICH WAS APPROVED. UPON REACHING 9000 FT COMPASS STARTED SWINGING BACK AND FORTH. THIS ACTION CONTINUED UNTIL APPROX 4000 FT. AFTER PASSING 4000 FT, COMPASS RETURNED TO NORMAL AXIS. HDG AT THAT TIME WAS APPROX 60 DEG. TURB DURING THE DSCNT WAS PRESENT. COMPASS IS FULL OF FLUID AND PROPERLY SET. MAGNETIC DISTURBANCE WAS SOMEWHERE NEARBY.
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.