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SDR 2011FA0000394

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Service difficulty report · Fms · Cessna 680CE

FAA SDR system

Difficulty date
June 20, 2011
Submitted
June 23, 2011
Operation
General aviation
Aircraft
N680GR
Make and model
Cessna 680CE
Aircraft serial
210
Aircraft time
517 hours, 358 cycles
System (JASC)
3460 · Flight Management Computing Hardware System
Part
Fms
Condition
Malfunctioned
Stage of operation
DE
How discovered
O
Nature of condition
O
Precautionary procedure
O

As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.

What was found

DURING APPROACH THE PILOT PUSHED THE APPROACH KEY ON FMS AND THE COURSE INDICATOR CHANGED FROM PINK TO GREEN. ON PASSING THE FAF AND WITHOUT PILOT INPUT, AT ABOUT 2,400 FT MSL, THE INBOUND COURSE CHANGED FROM THE INBOUND COURSE IN ILS 12R TO THE INBOUND COURSE OF THE ILS 17R COURSE AT LAST AIRPORT. IMMEDIATELY, THE FLIGHT DIRECTOR INDICATED A TURN TO THE RT AND THE AUTO PILOT SYS TURNED THE AIRCRAFT TO THE RT. THE PILOTS WERE FORCED TO DISCONNECT THE AUTOPILOT. PILOTS WERE ABLE TO CONTINUE THE APPROACH VISUALLY AND MANUALLY.