SDR 2023F00223

Service difficulty report · Fms · Lear 45LEAR

Difficulty date
July 1, 2023
Submitted
July 12, 2023
Operation
General aviation
Aircraft
N786CC
Make and model
Lear 45LEAR
Aircraft serial
095
Aircraft time
9,980 hours, 7,646 cycles
Engine
Hnywl TFE73120BR
Engine time
9,604 hours, 7,342 cycles
Part
Fms
Part number
101741001
Part serial
1831
Condition
Misrepaired
Location
Cockpit
Part time
963 hours, 6 cycles
Component
Fms · Unipro · UNS1C
Component part number
101741001
Stage of operation
CL
How discovered
O
Nature of condition
W, B
Precautionary procedure
A

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

What was found

LEARJET 45 N786CC S/N 095 DLX786 WAS CLIMBING FROM 360 TO 370 AND CLEARED DIRECT TO LAS. WE SAW SMOKE COMING OUT FROM THE CENTER CONSOLE NEAR THE FMS. WE ALSO SMELLED ELECTRICAL SMOKE. WE HEARD A POP AND THE FMS IMMEDIATELY FAILED. WE DECLARED AN EMERGENCY AND DIVERTED TO KLAS. THE FMS WAS NOTICEABLY HOT TO THE TOUCH SO WE PULLED THE FMS BREAKER AS A PRECAUTION. WE LANDED WITH OUT FURTHER INCIDENT.