Warning Systems Flashcards
What are considered GPWS “radio altitude-
based alerts?”
• Excessive Descent Rate.
• Excessive Terrain Closure Rate.
• Altitude loss after takeoff or go-around.
• Unsafe terrain clearance when not in the
landing configuration.
• Excessive deviation below an ILS glideslope.
Additionally, how does the (E)GPWS provide
“look-ahead terrain alerts?”
Using an internal world-wide terrain database
What condition will inhibit a terrain alert?
An actual windshear warning (aircraft in windshear).
Can terrain and weather radar show together
on a display?
No. If one pilot selects terrain and the other pilot
selects weather radar, each display updates on
alternating sweeps.
What conditions inhibit TCAS alerts?
GPWS and windshear warnings.
What must an aircraft be equipped with to allow
Resolution Advisories?
Mode C Transponder
Why should TCAS be placed in TA ONLY when
performance is limited, such as with an inoperative
engine?
To prevent receiving RAs beyond the aircraft’s
capabilities
GPWS windshear alerts are enabled below
what altitude?
1,500 ft RA. GPWS Windshear detection begins at
rotation.
When does the weather radar automatically
begin scanning for windshear
(-700) Thrust levers set for takeoff, even if engine is
off or IRS not aligned or in flight below 2,300 ft RA
(predictive windshear alerts are issued below 1,200
ft RA).
(-800) Thrust levers set for takeoff or in flight below
1,800 ft RA (predictive windshear alerts are issued
below 1,200 ft RA).
(MAX) Thrust levers set for takeoff, even if engine is
off or IRS not aligned or in flight below 1800 RA
(predictive windshear alerts are issued below 1,200
ft RA).
When are Predictive Windshear Cautions
inhibited?
Between 80 kts and 400 ft RA
When are Predictive Windshear Warnings
inhibited?
Between 100 kts and 50 ft RA
You are on final for a CAT III approach and the
RVR is reported below minimums. What would you
do?
Go-Around. A Look-See Approach is not authorized
during CAT III approaches.
What HGS Mode(s) may be used during CAT
II and SA CAT I approaches?
PRI, IMC or AIII (Unless AIII mode is specifically
required on the Jepp Approach plate).
During Taxi, what is required while performing
Intensive Tasks when the visibility is reported below
4000 RVR or 3/4 miles?
Stop the aircraft and set the parking brake.
Prior to departure while reviewing your
weather packet, you notice the forecast for your
destination indicates a chance of thunderstorms and wind gusts greater than 20 knots. Is an alternate required?
Yes. Company requires an alternate be listed when
your ETA, from one hour before to one hour after, andThunderstorms or wind gusts greater than 20kts more than the steady state wind velocity