EICAS Warning & Caution Messages

Question 1

BATT BUS

Answer 1

Battery Bus inoperative

Question 2

GEN BUS

Answer 2

Generator Bus inoperative

Question 3

PMU FAIL

Answer 3

PMU failure

**Go to the “PMU Failure” or “PMU Fault” EP in the PCL

Question 4

GEN

Answer 4

Generator failure

Question 5

CKPT PX

Answer 5

Cockpit overpressurization (exceeds 3.9 to 4.0 psi)

Question 6

CANOPY

Answer 6

Canopy is unlocked/unsafe

Question 7

FUEL PX

Answer 7

Fuel pressure is below 10 psi in the motive flow supply line

Question 8

OIL PX

(Red Warning Message)

Answer 8

• Oil pressure at or below 15 psi
• Oil pressure is between 15-40 psi with PCL at IDLE
• Oil pressure is at or below 40 psi with PCL above IDLE

Question 9

OBOGS FAIL

Answer 9

OBOGS system malfunction

Question 10

CHIP

Answer 10

Chip dectector indicates oil contaimination

Question 11

ADC FAIL

Answer 11

Air data computer fails

**Go to the “Air Data Computer Failure” EP in the PCL

Question 12

EDM FAIL

Answer 12

Engine data manager fails

**Go to the “Engine Data Manager Failure” EP in the PCL

Question 13

CHK ENG

(Red Warning Message)

Answer 13

Engine parameters have exceed operating limits:
* ITT is greater than 821°C for more than 20 secs (not in start mode)
* ITT is greater than 870°C (not in start mode)
* N1 is greater than 105%
* Oil pressure is greater than 200 psi
* Oil temperature is less than -41°C or greater than 111°C
* Torque is greater than 131%

Question 14

CKPT ALT

Answer 14

Cockpit pressure altitude is above 19,000 ft

**Go to the “Rapid Decompression/Cockpit Pressure Altitude Exceeds 19,000 ft” EP in the PCL

Question 15

DUCT TEMP

Answer 15

Environmental/defog duct is above 300°F

**Go to the “Environmental Systems Duct Overtemp” EP in the PCL

Question 16

HYD FL LO

Answer 16

Hydraulic fluid in the reservoir is below 1 quart

Question 17

BUS TIE

Answer 17

BUS TIE switch is open or system is inoperative

**Go to “Bus Tie Inoperative” EP in the PCL

Question 18

FUEL BAL

Answer 18

• Fuel balance exceeds 30 pounds for 2 minutes
• Fuel probe fail
• EDM fail

Question 19

EHYD PX LO

Answer 19

Emergency hydraulic pressure is at or below 2400±150psi

Question 20

OBOGS TEMP

Answer 20

OBOGS temperautre is above 200°F

This is would be a “OBOGS Failure/Physiological Symptoms” EP from memory

Question 21

TAD FAIL

Answer 21

Rudder trim aid device failure

Question 22

L/R FUEL LO

Answer 22

Left/Right wing tank below 110 pounds of usable fuel

Question 23

PMU STATUS

Answer 23

• PMU has detected/accommodated a fault in-flight
• Weigh-on-wheels switch failure

**Go to the “PMU Failure” or “PMU Fault” EP in the PCL

Question 24

OIL PX

(Amber Caution Message)

Answer 24

• Oil pressure is 15 to 40 psi with PCL at IDLE
• Oil pressure is 40 to 90 psi for 10 secs with PCL above IDLE

Question 25

XPDR FAIL

Answer 25

Transponder has failed ## Footnote **Go to the "XPDR Failure" EP in the PCL

Question 26

ADS-B FAIL

Answer 26

Transponder indicates an ADS-B Out function failure ## Footnote **Go to the "ADS-B Failure" EP in the PCL

Question 27

IAC XTALK

Answer 27

Loss of communication between the Integrated Avionics Computers ## Footnote **Go to the "IAC XTALK Failure" EP in the PCL

Question 28

FP FAIL

Answer 28

Fuel probe malfunction ## Footnote **Go to the "Fuel Probe Malfunction" EP in the PCL

Question 29

IAC 1/2 FAIL

Answer 29

Integrated avionics computer 1/2 has failed ## Footnote **Go to the "IAC Failure" EP in the PCL

Question 30

IAC 1/2 OVHT

Answer 30

Integrated Avionics Computer 1/2 over heat ## Footnote Automatic shutdown could be imminent

Question 31

IRS FAIL

Answer 31

Inertial reference system has failed ## Footnote **Go to "IRS Failure" EP in the PCL

Question 32

L/R PHT INOP

Answer 32

Left/Right pitot heat is not energized

Question 33

UFCP 1/2 FAIL

Answer 33

UFCP 1(Front Cockpit)/2(Aft cockpit) has failed ## Footnote **Go to the "UFCP Failure" EP in the PCL

Question 34

IAC 1/2 CONFIG

Answer 34

Integrated Avionics Computers 1 and 2 have mismatched configuration

Question 35

CHK ENG | (Amber Caution Message)

Answer 35

Engine parameters are outside of operating limits: * Hydraulic pressure is at or less than 1790 psi * Hydraulic pressure is greater than 3500 psi * Oil temperature is between 106-111°C

Question 36

RPT ERR

Answer 36

Both cockpits have selected repeat mode at the same time

Question 37

ADC A/B INOP

Answer 37

Internal failure of Channel A/B of the ADC ## Footnote **Go to the "Air Data Computer Failure" EP in the PCL

Question 38

EDM A/B INOP

Answer 38

Internal failure of Channel A/B of the EDM ## Footnote **GO to the "Engine Data Manager Failure" EP in the PCL

Question 39

IRS DEGD

Answer 39

IRS/GPS hybrid operational mode is degraded

Question 40

MX-G

Answer 40

Message illuminates when one or more Over-G event is captured in the Over-G log Message iluminates on the ground (not during flight)