ATR 257 Test 1: Questions With Clear &
Easy Solutions.LATEST EXAM 2025
What are the conditions for Landing Gear Unsafe Indications? -
ANSWER-Any gear that is not down locked, and Flaps 30(45), and ZRA
less than 500ft or Any gear is not down locked, and at least one PL at
FI, and ZRA less than 500ft
What will happen if the ECU were to deactivate? - ANSWER-Power loss
at constant throttle idle position, engine response sluggish when
increasing power and fast response when decreasing power, landing
will lead to a big prop speed decay as speed decreases, reverse power is
reduced
What is the Np for initial climb torque? - ANSWER-86% Np with
objective TQ, when reaching 75% TQ, 77% NP can be selected
Why is it unwise to turn off bleeds during T/O? - ANSWER-Turing off
bleeds will increase torque of 9% without ITT reduction.
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,Up to what altitude does the pressurization memorizes the T.O altitude
without crew action? - ANSWER-up to 3500 agl a
What does the ATPCS do when it is activated? For ground? For Flight? -
ANSWER-The system on theground uptrims and autofeathers. The
system for flight, autofeathers.
What does the LO Pitch light indicate? The alerts for it? And what
happens - ANSWER-It indicates when the actual blade angle is lower
than the normal FI blade angle. Caution light with LO Pitch. Opens up
a valve
What is the sequence for ATPCS armed on ground? - ANSWER-You will
conduct a normal takeoff with ATPCS armed;
Left engine failure: uptrim on right engine;
after 2.15 seconds, uptrim maintained on right engine, ATPCS Arm
light extinguishes
What are the conditions to disarm the autofeather? - ANSWER-P-One
PL below 56 degrees
A-ATPCS PB off
S-PWR MGT selector other than T/O
T-Both torques below 53%
A- Autofeather signal triggered on one engine
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, What are 5 ways Autopilot may be disconnected by? - ANSWER-Quick
DISCONNECT on each control column, AP engage push button on AFCS
panel, GA mode activation, NORM or STBY pitch trim sw activation,
Stall warning
What are the max bank angles for Hi and Lo BANK? - ANSWER-27
degrees Hi bank, 15 degrees LO bank
Why does it take 2.15 seconds to uptrim the energized engine? -
ANSWER-It's to perform an acceleration stop without having
autofeather to benefit reversing action.
What are the functions of the ECU? - ANSWER-C-Maintains constant
power when conditions vary without moving the PL position
U- Monitors NH underspeed leading to an ECU fault when NH drops
belows 60%
N-Makes sure no power change after ECU fault detection
F-Acts on the torque motor of the HMU for fuel flow,
F-Engine failure it delivers uptrim T/O power on the other engine
(ATPCS),
What NP must be maintained at low aircraft speed and ground? -
ANSWER-70.8%
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Easy Solutions.LATEST EXAM 2025
What are the conditions for Landing Gear Unsafe Indications? -
ANSWER-Any gear that is not down locked, and Flaps 30(45), and ZRA
less than 500ft or Any gear is not down locked, and at least one PL at
FI, and ZRA less than 500ft
What will happen if the ECU were to deactivate? - ANSWER-Power loss
at constant throttle idle position, engine response sluggish when
increasing power and fast response when decreasing power, landing
will lead to a big prop speed decay as speed decreases, reverse power is
reduced
What is the Np for initial climb torque? - ANSWER-86% Np with
objective TQ, when reaching 75% TQ, 77% NP can be selected
Why is it unwise to turn off bleeds during T/O? - ANSWER-Turing off
bleeds will increase torque of 9% without ITT reduction.
1|Page
,Up to what altitude does the pressurization memorizes the T.O altitude
without crew action? - ANSWER-up to 3500 agl a
What does the ATPCS do when it is activated? For ground? For Flight? -
ANSWER-The system on theground uptrims and autofeathers. The
system for flight, autofeathers.
What does the LO Pitch light indicate? The alerts for it? And what
happens - ANSWER-It indicates when the actual blade angle is lower
than the normal FI blade angle. Caution light with LO Pitch. Opens up
a valve
What is the sequence for ATPCS armed on ground? - ANSWER-You will
conduct a normal takeoff with ATPCS armed;
Left engine failure: uptrim on right engine;
after 2.15 seconds, uptrim maintained on right engine, ATPCS Arm
light extinguishes
What are the conditions to disarm the autofeather? - ANSWER-P-One
PL below 56 degrees
A-ATPCS PB off
S-PWR MGT selector other than T/O
T-Both torques below 53%
A- Autofeather signal triggered on one engine
2|Page
, What are 5 ways Autopilot may be disconnected by? - ANSWER-Quick
DISCONNECT on each control column, AP engage push button on AFCS
panel, GA mode activation, NORM or STBY pitch trim sw activation,
Stall warning
What are the max bank angles for Hi and Lo BANK? - ANSWER-27
degrees Hi bank, 15 degrees LO bank
Why does it take 2.15 seconds to uptrim the energized engine? -
ANSWER-It's to perform an acceleration stop without having
autofeather to benefit reversing action.
What are the functions of the ECU? - ANSWER-C-Maintains constant
power when conditions vary without moving the PL position
U- Monitors NH underspeed leading to an ECU fault when NH drops
belows 60%
N-Makes sure no power change after ECU fault detection
F-Acts on the torque motor of the HMU for fuel flow,
F-Engine failure it delivers uptrim T/O power on the other engine
(ATPCS),
What NP must be maintained at low aircraft speed and ground? -
ANSWER-70.8%
3|Page
