Hydraulics Flashcards
Q.4.1. What is your assessment of the problem?
Scenario
Enroute from DAL to ABQ at FL 300 you notice the following lights illuminate:
MASTER CAUTION
FLT CONTROL A LOW PRESSURE
HYD PUMPS ENG 1 LOW PRESSURE
HYD PUMPS ELEC 2 LOW PRESSURE
Loss of system A hydraulics.
Reference: FRM 13.1.3, 15.2.3.1
Q.4.2. What other indications can help you confirm the situation?
Scenario
Enroute from DAL to ABQ at FL 300 you notice the following lights illuminate:
MASTER CAUTION
FLT CONTROL A LOW PRESSURE
HYD PUMPS ENG 1 LOW PRESSURE
HYD PUMPS ELEC 2 LOW PRESSURE
HYDRAULIC indications on MFD, A autopilot disconnected if in use.
Reference: FRM 13.2.2, QRH 13.4
Q.4.3. What major systems are affected?
Scenario
Enroute from DAL to ABQ at FL 300 you notice the following lights illuminate:
MASTER CAUTION
FLT CONTROL A LOW PRESSURE
HYD PUMPS ENG 1 LOW PRESSURE
HYD PUMPS ELEC 2 LOW PRESSURE
Autopilot A, normal landing gear extension and retraction, ground spoilers, engine 1 thrust reverser normal hydraulic pressure, normal nose wheel steering.
Reference: 13.2.2, QRH 13.4
Q.4.4. What Non-Normal Checklist is applicable?
Scenario
Enroute from DAL to ABQ at FL 300 you notice the following lights illuminate:
MASTER CAUTION
FLT CONTROL A LOW PRESSURE
HYD PUMPS ENG 1 LOW PRESSURE
HYD PUMPS ELEC 2 LOW PRESSURE
LOSS OF SYSTEM A
Reference: QRH NG 13.4
Q.4.5. What does PWB take into account when computing performance data?
Scenario
Enroute from DAL to ABQ at FL 300 you notice the following lights illuminate:
MASTER CAUTION
FLT CONTROL A LOW PRESSURE
HYD PUMPS ENG 1 LOW PRESSURE
HYD PUMPS ELEC 2 LOW PRESSURE
The PWB Landing Module allows performance corrections based on the specific non-normal condition that impacts performance. Non-normal conditions are grouped by system, appear in the same order as the QRH, and are titled the same as in the QRH.
Reference: QRH 13.4
Q.4.6. Can you continue to your destination?
Scenario
Enroute from DAL to ABQ at FL 300 you notice the following lights illuminate:
MASTER CAUTION
FLT CONTROL A LOW PRESSURE
HYD PUMPS ENG 1 LOW PRESSURE
HYD PUMPS ELEC 2 LOW PRESSURE
Yes, unless you lose another hydraulic system.
Reference: AOM 5.1.1
Q.4.7. What should you consider when in the terminal area?
Scenario
Enroute from DAL to ABQ at FL 300 you notice the following lights illuminate:
MASTER CAUTION
FLT CONTROL A LOW PRESSURE
HYD PUMPS ENG 1 LOW PRESSURE
HYD PUMPS ELEC 2 LOW PRESSURE
When the gear has been lowered manually, it cannot be retracted. The drag penalty with gear extended may make it impossible to reach an alternate field.
Reference: QRH 13.4
Q.4.8. What is your assessment of the problem?
Enroute from MDW to DEN at FL340, you notice the following lights illuminate:
MASTER CAUTION
FLT CONTROL B LOW PRESSURE
HYD PUMPS ENG 2 LOW PRESSURE
HYD PUMPS ELEC 1 LOW PRESSURE
Loss of system B hydraulics.
Reference: FRM 13.1.3, 15.2.3.1
Q.4.9. What major systems are affected?
Enroute from MDW to DEN at FL340, you notice the following lights illuminate:
MASTER CAUTION
FLT CONTROL B LOW PRESSURE
HYD PUMPS ENG 2 LOW PRESSURE
HYD PUMPS ELEC 1 LOW PRESSURE
B autopilot, yaw damper, trailing edge flaps and leading edge devices normal hydraulic pressure, autobrake, normal brakes, engine 2 thrust reverser normal hydraulic pressure, 2 spoilers each wing.
Q.4.10. Why do you plan a flaps 15 landing?
Enroute from MDW to DEN at FL340, you notice the following lights illuminate:
MASTER CAUTION
FLT CONTROL B LOW PRESSURE
HYD PUMPS ENG 2 LOW PRESSURE
HYD PUMPS ELEC 1 LOW PRESSURE
To improve go-around capabilities.
Reference: AOM 5.11.1
Q.4.11. What would you do if you also had STANDBY HYD LOW QUANTITY?
Enroute from MDW to DEN at FL340, you notice the following lights illuminate:
MASTER CAUTION
FLT CONTROL B LOW PRESSURE
HYD PUMPS ENG 2 LOW PRESSURE
HYD PUMPS ELEC 1 LOW PRESSURE
Plan to land at the nearest suitable airport.
Reference: AOM 5.1.1
Q.4.12. What should you consider prior to extending the flaps?
Enroute from MDW to DEN at FL340, you notice the following lights illuminate:
MASTER CAUTION
FLT CONTROL B LOW PRESSURE
HYD PUMPS ENG 2 LOW PRESSURE
HYD PUMPS ELEC 1 LOW PRESSURE
Leading edge devices cannot be retracted after extension with alternate flap extension system. The drag penalty with leading edge devices extended may make it impossible to reach an alternate field.
Reference: QRH 13.6
Q.4.13. Before pushback, which hydraulic system must be depressurized (both pumps OFF and LOW PRESSURE lights illuminated)?
System A
Reference: AOM 3.13
Q.4.14. The aircraft must not be towed forward unless both engines are shut down and which hydraulic system is depressurized?
System A
Reference: AOM 3.13
Q.4.15. How can the standby hydraulic pump be activated?
Manually: By moving either FLT CONTROL switch to STBY RUD or ALTERNATE FLAPS master switch to ARM.
Automatically: Inflight or on the ground with a loss of system A or B, under specific conditions, or Force Fight Monitor (FFM) activation.
Reference: FRM 13.2.3.1, 13.2.3.2
Q.4.16. What is the significant difference in capability between an engine-driven pump and an AC electric motor-driven pump?
An engine-driven pump supplies six times the fluid volume than the related electric motor-driven hydraulic pump.
Reference: FRM 13.2.2
Q.4.17. What does an illuminated OVERHEAT light on the Electric Hydraulic Pump indicate?
The associated electric motor driven pump is overheated, or the hydraulic fluid used to cool and lubricate the corresponding electric motor driven pump is overheated.
Reference: FRM 13.1.1, QRH 13.2
Q.4.18. For which components does the standby hydraulic system provide back up for Systems A and or B?
-Thrust reversers
• Rudder
• Leading edge flaps and slats (extend only)
• Standby yaw damper
Reference: FRM 13.2.3
