What was found
IN CRUISE, AUTOPILOT HAD 2 UNCOMMANDED HARDS ROLLS, ONE TO THE LEFT AND ONE TO THE RIGHT, ESTIMATED AT 20 TO 30 DEGREES. AUTOPILOT DISENGAGED. REPLACED B-SYSTEM AILERON PCU TRANSFER VALVE PER BOEING M/M.
- Difficulty date
- April 14, 1997
- Submitted
- March 26, 2000
- Operation
- Air carrier
- Aircraft
- N73SW
- Make and model
- Boeing 7372H4
- Aircraft serial
- 22673
- System (JASC)
- 2710 · Aileron Control System
- Part
- Pcu Valve
- Part number
- 450801
- Condition
- Malfunctioned
- Location
- Aileron Contl
- Stage of operation
- CR
- Nature of condition
- F
- Precautionary procedure
- O
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.