ATA70 - Power plant

Question 1

119. The thrust limit is computed by :
The FMGC according to the AP/FD MODE
The FADEC (ECU) according to the THRUST LEVER position
The ECU according to the AP/FD MODE
The FMGC according to the ECU order

Answer 1

The FADEC (ECU) according to the THRUST LEVER position

Question 2

120. Which valve ensure an adequate fuel flow :
     The HP FUEL SHUT-OFF VALVE
     The LP FUEL SHUT-OFF VALVE
     The FUEL METERING UNIT

Answer 2

The FUEL METERING UNIT

Question 3

121. What device provides direct closure of the HP and LP SHUT-OFF VALVES :
     The MASTER SWITCH at OFF position
     The ECU
     HMU

Answer 3

The MASTER SWITCH at OFF position

Question 4

122. What is the minimum starting oil temperature :
     - 40°C
     - 10°C
     0°C

Answer 4

• 40°C

Question 5

123. In manual mode, when the THRUST LEVERS are between the CLIMB DETENT and
     IDLE :
     Each position of the levers correspond to a N1
     N1 climb is selected disregarding THRUST LEVER positions
     IDLE THRUST is selected
     THRUST is locked

Answer 5

Each position of the levers correspond to a N1

Question 6

124. On the ground the start sequence is automatically aborted :
     There is no automatic start sequence
     In case of hot start, hung start, stall or no light up
     Only in case of no light up

Answer 6

In case of hot start, hung start, stall or no light up

Question 7

125. Ignition comes on automatically when N2 reaches :
     0%
     25%
     16%

Answer 7

16%

Question 8

126. What is the EGT limit at TOGA power setting (CFM 56-B4)?
     725°C on 1 engine or 715°C on both engines running
     855°C during 5 min ( 10 min on 1 engine )
     950°C during 5 min ( 10 min on 1 engine )

Answer 8

950°C during 5 min ( 10 min on 1 engine )

Question 9

127. LVR MCT amber message (in the left part of the FMA) means :
     THRUST LEVERS are not in MCT position after engine failure
     THRUST LEVERS are not in CLB position after TAKE OFF

Answer 9

THRUST LEVERS are not in MCT position after engine failure

Question 10

128. What is the maximun starter operating time :
     8 min followed by 15 min of no operation
     5 min followed by 20 sec of no operation
     2 min followed by 20 sec of no operation

Answer 10

2 min followed by 20 sec of no operation

Question 11

129. The LOW PRESSURE ROTOR (N1) consist of (CFM 56-B4) :
     A front FAN - 9 STAGE BOOSTER - 5 STAGE LP TURBINE
     A front FAN (1 STAGE) - 4 STAGE LP COMPRESSOR - 4 STAGE LP TURBINE

Answer 11

A front FAN (1 STAGE) - 4 STAGE LP COMPRESSOR - 4 STAGE LP TURBINE

Question 12

130. How is the oil cooled ?
     By the engine FUEL/OIL heat exchanger
     By oil recirculation and the FUEL/OIL heat exchanger
     By the air/oil heat exchanger only

Answer 12

By the engine FUEL/OIL heat exchanger

Question 13

131. In AUTOTHRUST MODE the THRUST computed by the FMGC is limited :
     By the mode engaged on the FCU
     To the value corresponding to the TLA by the FADEC
     By the FMGC it self

Answer 13

To the value corresponding to the TLA by the FADEC

Question 14

132. What is the minimum oil pressure before warning on ENGINE ECAM SD page :
     13 PSI
     40 PSI
     Variable according to oil temperature

Answer 14

13 PSI

Question 15

133. The FADEC automatically select continuous ignition in the following cases :
     Flame out detected
     Engine running and ignition delay during start
     Both answers are correct

Answer 15

Both answers are correct

Question 16

134. Is the engine still supplied in case of oil filter clog :
     Yes, by using the oil coming from the IDG cooling tank line
     Yes, by BY-PASSING the OIL FILTER (BY-PASS VALVE)
     No, the engine stops

Answer 16

Yes, by BY-PASSING the OIL FILTER (BY-PASS VALVE)

Question 17

135. The max continuous OIL TEMP limit may be exceeded. What is the limit and in which
conditions ?
155°C for less than 15 min
140°C without any delay
Both answers are correct

Answer 17

Both answers are correct

Question 18

136. In flight, if the INSTINCTIVE DISCONNECT P/B is pressed for more than 15 sec, the
     A/THR including ALPHA FLOOR is definitively lost :
     Right
     Wrong

Answer 18

Right

Question 19

137. What is the FADEC ?
     An Engine Control Box (ECB)
     A THRUST CONTROL ENG UNIT (EIU)
     The Full Autority Digital Control and its peripherical sensors and components

Answer 19

The Full Autority Digital Control and its peripherical sensors and components

Question 20

138. Reduced FLEX TAKE-OFF THRUST is not permitted :
     If outside air temp is lower than corrected temp
     On contaminated runway or with one (or more) reverser INOP
     If outside air temp is higher than TREF (ISA+15°c)

Answer 20

On contaminated runway or with one (or more) reverser INOP

Question 21

139. The maximun REVERSE THRUST may be used down to :
A/C stop according to EGT LIMIT
70 kts ( IDLE REVERSE down to A/C stop )
40 kts ( IDLE REVERSE down to A/C stop )

Answer 21

70 kts ( IDLE REVERSE down to A/C stop )

Question 22

140. EGT indication pulses red on ECAM E/WD when EGT is higher than (CFM 56-B4) :
     725°C
     855°C
     950°C

Answer 22

950°C

Question 23

141. THRUST REVERSERS are actuated by :
     hydraulic actuators : GREEN for ENG 1, YELLOW for ENG 2
     hydraulic actuators : BLUE for ENG 1, YELLOW for ENG 2
     pneumatic actuators

Answer 23

hydraulic actuators : GREEN for ENG 1, YELLOW for ENG 2

Question 24

142. In order to select MCT after an engine failure on a FLEX TAKE-OFF :
     As the LEVER THROTTLES are in FLEX DETENT : MCT selection is automatic
     LEVER THROTTLES may be moved to TOGA or CL detent then back to MCT
     position

Answer 24

LEVER THROTTLES may be moved to TOGA or CL detent then back to MCT position

Question 25

143. During an automatic on ground engine START-UP, the sequence is : Ignition WHEN N2 > 16%, HP FUEL VALVE opening when N2 > 22% - START VALVE CLOSURE when N2 > 50% IGNITION AND HP FUEL VALVE opening when N2 > 22% - START VALVE CLOSURE when N2 > 50% IGNITION when N2 > 16%, HP FUEL VALVE opening when N2 > 22% - START VALVE CLOSURE when setting MODE SEL switch to normal

Answer 25

Ignition WHEN N2 > 16%, HP FUEL VALVE opening when N2 > 22% - START VALVE CLOSURE when N2 > 50%

Question 26

144. During an automatic starting sequence : START VALVE CLOSES at N2 > 43% START VALVE CLOSES at N2 > 45% START VALVE CLOSES at N2 > 50%

Answer 26

START VALVE CLOSES at N2 > 50%

Question 27

145. The FADEC is electrically supplied by (CFM 56-B4) : Aircraft electrical system only Batteries if A/C electrical power fails Self powered above 58% N2 Aircraft system or self powered in case of emergency

Answer 27

Self powered above 58% N2

Question 28

146. Maximun EGT during engine start is (CFM 56 A1/A3/B4) : 890°C 855°C 725°C

Answer 28

725°C

Question 29

147. At TOULOUSE (500 ft) : outside air temp is 36°C and you have found a corrected FLEX TEMP of 33°C. Is it possible to use FLEX THRUST for TAKE-OFF ? Yes No

Answer 29

No

Question 30

148. What is the maximun N1 (CFM 56-B4) : 109% 104%

Answer 30

104%

Question 31

149. Is the MAX CRUISE N1 displayed on E/WD ? No Yes

Answer 31

No

Question 32

150. At TAKE-OFF, as soon as the power is set (FLEX or TOGA) : A/THR function is engaged provided FCU A/THR P/B has been pushed A/THR function is active A/TRH function is engaged but not active

Answer 32

A/TRH function is engaged but not active

Question 33

151. LVR ASYM amber message (FMA) means : One THRUST LEVER is set out of CLB detent (both engines running) ASYMETRIC POWER is established due to FADEC MALFUNCTION ASYMETRIC POWER is established due to TLA RESOLVER FAULT

Answer 33

One THRUST LEVER is set out of CLB detent (both engines running)

Question 34

152. During an automatic START-UP sequence, the PACK VALVE close when : IGN/START is selected APU BLEED is selected to "ON" and IGN/START is selected The MASTER SWITCH is selected "ON" with IGN/START selected

Answer 34

IGN/START is selected

Question 35

153. REV GREEN appears on the E/WD ECAM when : The THRUST LEVERS are selected to FULL REVERSE SECTOR The REVERSE DOORS are fully deployed The THRUST LEVERS position are in the IDLE REVERSE SECTOR

Answer 35

The REVERSE DOORS are fully deployed

Question 36

154. Dry cranking may be manually selected by setting : ENG MODE SELECTOR to crank and MASTER SWITCH to ON MASTER SWITCH to OFF, ENG MODE SELECTOR to CRANK and MAN START P/B to ON MASTER SWITCH to ON, ENG MODE SELECTOR to CRANK and MAN START P/B to ON

Answer 36

MASTER SWITCH to OFF, ENG MODE SELECTOR to CRANK and MAN START P/B to ON

Question 37

155. The THRUST REVERSER activation conditions are : Aircraft on ground and THRUST LEVER between REVERSE IDLE DETENT and MAX REVERSE In flight, spoilers armed AND THRUST LEVERS on The REVERSE SECTOR THRUST LEVERS in full REVERSE SECTOR

Answer 37

Aircraft on ground and THRUST LEVER between REVERSE IDLE DETENT and MAX REVERSE

Question 38

156. What is the maximum N2 (CFM 56 A1/A3/B4) : 105% 102%

Answer 38

105%

Question 39

157. Are the engines still supplied in case of FUEL FILTER clog : Yes by using the fuel coming from the IDG cooling and outer tank line No Yes by-passing the FUEL FILTER (BY-PASS VALVE )

Answer 39

Yes by-passing the FUEL FILTER (BY-PASS VALVE )

Question 40

158. When an engine ANTI-ICE VALVE is open : The N2 of the associated engines decreases The N1 limit is automatically reduced and if necessary N1 IDLE is increased for both engines There is no change in N1 limit or N2

Answer 40

The N1 limit is automatically reduced and if necessary N1 IDLE is increased for both engines