CQT COMPREHENSIVE EXAM 2026/2027 QUESTIONS
AND SOLUTIONS RATED A+
✔✔What causes the COWL ANTI-ICE light to
illuminate? - ✔✔An overpressure condition in duct downstream of
engine cowl anti-ice valve.
✔✔The blue COWL VALVE OPEN lights have
been replaced on the MAX with amber COWL VALVE
lights, and associated QRH procedure. What do the
amber COWL VALVE lights signify? - ✔✔• Momentary - Related cowl anti-ice valve is
in transit.
• Steady - Cowl anti-ice valve position
disagrees with related ENGINE ANTI-ICE
switch position.
✔✔What does the amber ENG ANTI-ICE light
indicate on the MAX? - ✔✔Cowl thermal anti-ice system has been inhibited due
to a system failure or when an engine core anti-ice
valve fails closed.
✔✔The MAX has an additional engine anti-ice
feature called Core anti-ice. How is it operationally
controlled? - ✔✔Core anti-ice is automatically controlled by the EECs
with no crew input or indication of normal operation.
✔✔Besides controlling the engine anti-ice
functions, what does placing the ENG ANTI-ICE
switches to the ON position do? - ✔✔• Sets stall warning logic for icing conditions
• Sets engine idle speed
Note: Stall warning logic adjusts stick shaker and
minimum maneuver speed bars on the airspeed
indicator. FMC displayed VREF is not adjusted
automatically.
Note: Stall warning logic, airspeed indications, and
minimum maneuver speeds on the airspeed
indicator return to normal when the engine anti-ice
is positioned OFF if wing anti-ice has not been used
in flight.
✔✔When using engine anti-ice, what additional
idle speed is available in the MAX? - ✔✔Icing idle with the flaps UP and Approach Idle
when
flaps are extended.
,✔✔What areas of the aircraft are heated with the
Wing Anti-Ice Switch ON? - ✔✔The 3 inboard leading-edge slats by using bleed air
✔✔What is the guidance for using wing anti-ice
on the ground? - ✔✔• Do not operate wing anti-ice on the ground
when OAT is above 10 degrees C.
• Do not use wing anti-ice as a substitute for
ground deicing/anti-icing.
• The wing anti-ice switch will be turned OFF
prior to beginning the takeoff roll.
✔✔If the wing anti-ice is activated on the ground,
what happens when the thrust levers are advanced
for takeoff? - ✔✔Both valves close if either forward thrust lever is
above the takeoff warning setting. The WING ANTI-
ICE switch automatically trips OFF at liftoff when the
air/ground sensor goes to the air mode.
✔✔In the MAX, what is the logic associated with
the amber L VALVE and R VALVE lights? - ✔✔Momentary
Related wing anti-ice valve is in transit.
Steady
Wing anti-ice valve position disagrees with related
WING ANTI-ICE switch position.
Extinguished
Related wing anti-ice valve is closed (switch OFF),
or related wing anti-ice valve is open (switch ON).
✔✔When operating on standby power, which
pitot probe is heated? - ✔✔When operating on standby power, only the
Captain's pitot probe is heated; however, the CAPT
PITOT light does not illuminate for a failure.
✔✔If the wing anti-ice is activated on the ground,
when will the switch automatically switch to OFF? - ✔✔The wing anti-ice switch
automatically trips off at
liftoff when the air/ground sensor goes to the air
mode.
✔✔3.17. What is wrong with the Captain's pitot? (Capt Pitot light) - ✔✔The related
probe is not heated
, ✔✔What is a possible future impact of this malfunction - ✔✔Blockages or freezing in the
pitot/static system can result in unreliable airspeed and altitude indications
✔✔If icing conditions are unavoidable and the probe becomes fully blocked is there an
immediate action step that is applicable - ✔✔Airspeed Unreliable
✔✔What is wrong with the Captain's pitot? - ✔✔The related probe is not heated.
✔✔What is a possible future impact of this malfunction? - ✔✔Blockages or freezing in
the pitot/static system car esult in airspeed and altitude indications that are unreliable.
✔✔Q.3.19. If icing conditions are unavoidable and the probe becomes fully blocked, is
there an Immediate Action Step that is applicable? - ✔✔Airspeed Unreliable
✔✔Q.3.20. If so, when would you apply that step? - ✔✔If an unreliable airspeed event
occurs during takeoff at or after V1, maintain takeoff thrust, set 15° pitch attitude, retract
the landing gear, and maintain flap configuration. Climb at 15° pitch attitude until
reaching acceleration height. At acceleration height, do the Airspeed Unreliable NNC
Immediate Action steps and checklist.
✔✔At a safe altitude, you call for the CAPT
PITOT QRH, but the PM has trouble locating it. What
resource is available to help find the correct page? - ✔✔The LIGHTS index in the back
of the QRH. This will
direct you to the PROBE HEAT NNC.
✔✔What does it mean if this light is illuminated
(bright)? (COWL VALVE OPEN) - ✔✔Related cowl anti-ice valve is in transit or cowl
anti-
ice valve position disagrees with related engine
anti-ice switch position.
✔✔Q.3.23 What is a possible unwanted outcome of this
condition? - ✔✔Ice buildup on the engine cowl lip with a possible
effect on normal engine operation. The QRH tells
us to avoid icing conditions.
✔✔Q.3.24 The blue COWL VALVE OPEN light pictured
above has been replaced on the MAX. How does it
convey the same information? - ✔✔• The MAX has replaced it with an amber
COWL VALVE light in the same position.
An amber illuminated COWL VALVE light
indicates
o The related valve is in transit, or
AND SOLUTIONS RATED A+
✔✔What causes the COWL ANTI-ICE light to
illuminate? - ✔✔An overpressure condition in duct downstream of
engine cowl anti-ice valve.
✔✔The blue COWL VALVE OPEN lights have
been replaced on the MAX with amber COWL VALVE
lights, and associated QRH procedure. What do the
amber COWL VALVE lights signify? - ✔✔• Momentary - Related cowl anti-ice valve is
in transit.
• Steady - Cowl anti-ice valve position
disagrees with related ENGINE ANTI-ICE
switch position.
✔✔What does the amber ENG ANTI-ICE light
indicate on the MAX? - ✔✔Cowl thermal anti-ice system has been inhibited due
to a system failure or when an engine core anti-ice
valve fails closed.
✔✔The MAX has an additional engine anti-ice
feature called Core anti-ice. How is it operationally
controlled? - ✔✔Core anti-ice is automatically controlled by the EECs
with no crew input or indication of normal operation.
✔✔Besides controlling the engine anti-ice
functions, what does placing the ENG ANTI-ICE
switches to the ON position do? - ✔✔• Sets stall warning logic for icing conditions
• Sets engine idle speed
Note: Stall warning logic adjusts stick shaker and
minimum maneuver speed bars on the airspeed
indicator. FMC displayed VREF is not adjusted
automatically.
Note: Stall warning logic, airspeed indications, and
minimum maneuver speeds on the airspeed
indicator return to normal when the engine anti-ice
is positioned OFF if wing anti-ice has not been used
in flight.
✔✔When using engine anti-ice, what additional
idle speed is available in the MAX? - ✔✔Icing idle with the flaps UP and Approach Idle
when
flaps are extended.
,✔✔What areas of the aircraft are heated with the
Wing Anti-Ice Switch ON? - ✔✔The 3 inboard leading-edge slats by using bleed air
✔✔What is the guidance for using wing anti-ice
on the ground? - ✔✔• Do not operate wing anti-ice on the ground
when OAT is above 10 degrees C.
• Do not use wing anti-ice as a substitute for
ground deicing/anti-icing.
• The wing anti-ice switch will be turned OFF
prior to beginning the takeoff roll.
✔✔If the wing anti-ice is activated on the ground,
what happens when the thrust levers are advanced
for takeoff? - ✔✔Both valves close if either forward thrust lever is
above the takeoff warning setting. The WING ANTI-
ICE switch automatically trips OFF at liftoff when the
air/ground sensor goes to the air mode.
✔✔In the MAX, what is the logic associated with
the amber L VALVE and R VALVE lights? - ✔✔Momentary
Related wing anti-ice valve is in transit.
Steady
Wing anti-ice valve position disagrees with related
WING ANTI-ICE switch position.
Extinguished
Related wing anti-ice valve is closed (switch OFF),
or related wing anti-ice valve is open (switch ON).
✔✔When operating on standby power, which
pitot probe is heated? - ✔✔When operating on standby power, only the
Captain's pitot probe is heated; however, the CAPT
PITOT light does not illuminate for a failure.
✔✔If the wing anti-ice is activated on the ground,
when will the switch automatically switch to OFF? - ✔✔The wing anti-ice switch
automatically trips off at
liftoff when the air/ground sensor goes to the air
mode.
✔✔3.17. What is wrong with the Captain's pitot? (Capt Pitot light) - ✔✔The related
probe is not heated
, ✔✔What is a possible future impact of this malfunction - ✔✔Blockages or freezing in the
pitot/static system can result in unreliable airspeed and altitude indications
✔✔If icing conditions are unavoidable and the probe becomes fully blocked is there an
immediate action step that is applicable - ✔✔Airspeed Unreliable
✔✔What is wrong with the Captain's pitot? - ✔✔The related probe is not heated.
✔✔What is a possible future impact of this malfunction? - ✔✔Blockages or freezing in
the pitot/static system car esult in airspeed and altitude indications that are unreliable.
✔✔Q.3.19. If icing conditions are unavoidable and the probe becomes fully blocked, is
there an Immediate Action Step that is applicable? - ✔✔Airspeed Unreliable
✔✔Q.3.20. If so, when would you apply that step? - ✔✔If an unreliable airspeed event
occurs during takeoff at or after V1, maintain takeoff thrust, set 15° pitch attitude, retract
the landing gear, and maintain flap configuration. Climb at 15° pitch attitude until
reaching acceleration height. At acceleration height, do the Airspeed Unreliable NNC
Immediate Action steps and checklist.
✔✔At a safe altitude, you call for the CAPT
PITOT QRH, but the PM has trouble locating it. What
resource is available to help find the correct page? - ✔✔The LIGHTS index in the back
of the QRH. This will
direct you to the PROBE HEAT NNC.
✔✔What does it mean if this light is illuminated
(bright)? (COWL VALVE OPEN) - ✔✔Related cowl anti-ice valve is in transit or cowl
anti-
ice valve position disagrees with related engine
anti-ice switch position.
✔✔Q.3.23 What is a possible unwanted outcome of this
condition? - ✔✔Ice buildup on the engine cowl lip with a possible
effect on normal engine operation. The QRH tells
us to avoid icing conditions.
✔✔Q.3.24 The blue COWL VALVE OPEN light pictured
above has been replaced on the MAX. How does it
convey the same information? - ✔✔• The MAX has replaced it with an amber
COWL VALVE light in the same position.
An amber illuminated COWL VALVE light
indicates
o The related valve is in transit, or
