SDR 754003

Service difficulty report · Cadc · Boeing 747228F

Difficulty date
November 22, 2007
Submitted
November 23, 2007
Operation
Air carrier
Aircraft
N754SA
Make and model
Boeing 747228F
Aircraft serial
21576
Aircraft time
112,497 hours, 22,215 cycles
Part
Cadc
Part number
HG480C2
Part serial
82090032
Condition
Malfunctioned
Location
E&E Bay
Stage of operation
CR
How discovered
O
Nature of condition
F
Precautionary procedure
J, A

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

What was found

AUTOPILOT B ALTITUDE HOLD WOULD NOT CAPTURE OR HOLD ALTITUDE. VERTICAL SPEED COMMAND UNUSABLE AND MANUAL PITCH WHEEL CONTROL UNUSABLE. AUTOPILOT A PREVIOUSLY DEFERRED. REMOVED AND REPLACED CADC TO CORRECT AUTOPILOT B. REMOVED AND REPLACED P10 PANEL TO RESOLVE THE AUTOPILOT A DISCREPANCY.