ABNORMAL
PROCEDURES
AIRPLANE
OPERATIONS
MANUAL
1-03-59
Page
4
Code
03
REVISION 39
AOM-145/1114
For DAU 2 A FAIL caution message proceed:
DAU 2 Reversion ..................................................... ON
Check DAU 2 REVERSION message on EICAS.
NOTE: The following indications and messages will not be
available:
- Indications: Engine 2 oil (temperature and
pressure), Hydraulic quantity 1 and 2, yaw trim
position, cabin temperature, Bleed 2 temperature.
- Messages: BLD 2 OVTEMP, E2 FUEL LO TEMP,
HYD 1 LO QTY, HYD 2 LO QTY.
- BLD 2 LOW TEMP and APU OIL HI TEMP messages will
appear.
If both channels of one DAU have failed:
Exit or avoid icing conditions.
Land at the nearest suitable airport.
NOTE: - If both channels of DAU 1 have failed, the messages and
indications associated with the following systems will not be
available:
- All messages and indications: Oxygen, Steering,
Pressurization, Landing Gear, Roll Trim, and the
message EMERG LIGHT NOT ARMED.
- Some messages and indications: Doors, Stall
Protection, Electrical, Fire Protection, Fuel, APU,
Power Plant, Thrust Reverser, Flap, Spoiler, Brakes,
Air Conditioning, Ice And Rain Protection, Hydraulic.
- If both channels of DAU 2 have failed, the messages and
indications associated with the following systems will not be
available:
- All messages and indications: Smoke, Hydraulic,
Rudder, Yaw Trim.
- Some messages and indications: Doors, Stall
Protection, Electrical, Fire Protection, Fuel, APU,
Power Plant, Thrust Reverser, Flap, Spoiler, Brakes,
Air Conditioning, Ice And Rain Protection.