Service difficulty report · Computer · Boeing 737890

Difficulty date
August 3, 2009
Submitted
August 7, 2009
Operation
Air carrier
Aircraft
N517AS
Make and model
Boeing 737890
Aircraft serial
35197
Aircraft time
2,177 hours, 657 cycles
Part
Computer
Part number
8221604101
Part serial
17CLFL
Condition
Malfunctioned
Location
Autopilot Sys
Part time
2,196 hours, 665 cycles
Stage of operation
AP
How discovered
O
Nature of condition
O
Precautionary procedure
K

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

What was found

B AUTOPILOT DISCONNECTED 3X ARRIVING IN OGG, OK IN CRUISE A AUTOPILOT SELECTED DURING ARRIVAL OK. REMOVED AND REPLACED "B" FCC PER 22 11 33 OPS CHECK NORMAL PER MM PT II 22 11 33/401 TEST NR 35 FOR DFCS LRU INTERFACE TEST FOR FCC. PERFORMED S/W CROSS LOAD FROM "A", "B" FCC PER SAME.