Chapter 15 – Warning Systems

Question 1

1. What are the 3 levels of EICAS alerting?

Answer 1

a. Warning, Caution, and Advisory (AOM 15-17)

Question 2

2. Can a Warning EICAS message be canceled?

Answer 2

a. No (AOM 15-18)

Question 3

3. When are the Fire Bell and master Warning lights inhibited?

Answer 3

a. V1 until 400ft RA or 25 sec. after V1, whichever occurs first (AOM 15-49)

Question 4

4. What items will activate the Takeoff Configuration Warning?

Answer 4

a. Flaps not in takeoff position, or body gear not centered, or parking brake set, or
Speedbrake lever not in DN detent, or stabilizer trim not in takeoff range (when airplane is on the ground, and FUEL CONTROL switches are in RUN position, and engine two or three thrust is in takeoff range, and airspeed is less than V1.) (AOM 15-27)

Question 5

5. When is the (Reactive) Windshear alert system active?

Answer 5

a. Vr – 1,500 ft (AOM 15-41)
b. (PREDICTIVE WINDSHEAR - New warning alerts are inhibited on the ground above 100
KIAS until reaching 50’ AGL. New caution alerts are inhibited from 80 KIAS until reaching 400’ AGL. PWS alerts that occurred prior to the inhibit range are not removed. During approach and landing, new caution alerts are inhibited below 400’ AGL. New warning alerts are inhibited below 50’ AGL. Existing PWS alerts that occurred prior to the inhibit range are not removed. All caution and warning alerts are inhibited above 1200’ AGL.)

Question 6

6. In what phase of flight will you get a GPWS ”Sink Rate” warning?

Answer 6

a. Excessive descent rate during approach (AOM 15-37)

Question 7

7. What is the purpose of the Event Record switch? How many events can be recorded?

Answer 7

a. Pushing the EICAS EVENT RCD switch records currently displayed engine indications and additional EICAS maintenance information. Up to five events may be recorded by the first five pushes. (The system also records out of limit parameters and related conditions automatically when a system parameter is exceeded.) (AOM 15-51)

Question 8

8. What is a Status message?

Answer 8

a. All EICAS status messages are listed in the Dispatch Deviation Guide (DDG) and provide a cross reference to the Minimum Equipment List (MEL) for dispatch capability. (AOM 15- 18)

Question 9

9. What does the TCAS alert “Traffic, Traffic” mean?

Answer 9

a. A TA is a prediction another aircraft will enter the conflict airspace in 25 to 45 seconds. (AOM 15-30)

Question 10

10. What switch turns on TCAS advisories on the ND?

Answer 10

a. “TFC” button on EFIS Control Panel (AOM 10-29)