CRJ 700 Engine Indicating and Crew Alerting System (EICAS)

Question 1

What do the following EICAS display color codes mean: red, amber, green & white?

Answer 1

Warning, Caution, Advisory, Status

Question 2

What powers the two EICAS screens?

Answer 2

The battery bus

Question 3

Are the two EICAS cooling fans powered by the battery bus?

Answer 3

No

Question 4

Why is it important to provide APU or external electrical power to the aircraft within five minutes of energizing the battery?

Answer 4

To prevent the EICAS screens from overheating without the cooling fans

Question 5

What gathers data for EICAS display?

Answer 5

The two Data Concentrator Units

Question 6

How many chimes are there for a CAUTION message or a WARNING message?

Answer 6

One chime for CAUTION and three chimes for WARNING

Question 7

Name a few other aural warnings that the DCUs can generate

Answer 7

The fire bell for a fire, the warbler for a stall, the clacker for an overspeed, and the siren for windshear and terrain

Question 8

Which aural warnings will the DCU audio warning inhibit switches not cancel?

Answer 8

Windshear, EGPWS and TCAS

Question 9

Which four ECP buttons are mechanical and not dependent on the ECP microprocessor or ECP power?

Answer 9

PRI, STAT, CAS, STEP

Question 10

When will the oil pressure gauges be present on the primary display in addition to the digital readout?

Answer 10

With the engines shutdown, or with low oil pressure

Question 11

When will the N1 vibration guages replace the oil gauges?

Answer 11

With the engines running and normal oil pressure

Question 12

How is N2 vibration monitored?

Answer 12

The system monitors N2 vibration independently without display. If the N2 vibration exceeds a predetermined amount, VIB will be displayed inside the N2 gauge

Question 13

When will the flap gauge disappear?

Answer 13

With the wheel brake temperatures in the normal range, and the gear, slats and flaps retracted

Question 14

When will the wheel brake temperature indicators disappear?

Answer 14

With the wheel brake temperatures in the normal range, and the gear, slats and flaps retracted

Question 15

When can you box caution messages and how?

Answer 15

By pressing the CAS button with both engines running. New messages will appear above the boxed MSG icon

Question 16

When are certain caution messages inhibited on take-off?

Answer 16

Short answer: Thrust lever advancement to 400 feet

Long answer: With he power greater than 79% N1 to 100 KIAS some messages will be inhibited; when the speed is greater than 100 KIAS up to 400 feet on the radar altimeter most messages will be inhibited

Question 17

When are certain caution messages inhibited on landing?

Answer 17

400 AGL to weight on wheels plus 30 sec. or when climbing above 400 feet

Question 18

What will happen if ED1 fails?

Answer 18

The primary page will automatically revert to ED2

Question 19

If ED1 fails, the primary page will revert to ED2. How can the synoptic pages be viewed?

Answer 19

Select EICAS on the MFD reversionary panel and use the ECP (EICAS control panel) to cycle through synoptic pages OR; select ED2 on the source select panel to un-inhibit the ECP, then select the desired synoptic page

Question 20

Name several condition that must be satisfied for the TAKEOFF CONFIG OK advisory message to be displayed

Answer 20

• Parking Brake and Autopilot OFF
• Flight Spoilers stowed & Flaps between 8° and 20°
• Stabilizer trim inside green takeoff band
• Rudder trim inside takeoff range (less than plus/minus 1°)
• Aileron trim inside takeoff range (less than plus/minus 1°, displayed in green)