Hydraulic Scenario 01

Question 1

Scenario
Enroute from DAL to ABQ at FL300 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

Answer 1

Scenario
Enroute from DAL to ABQ at FL300 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

Question 2

Scenario
Enroute from DAL to ABQ at FL300 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

Q.4.1 What is your assessment of the problem?

Answer 2

Loss of system A hydraulics

Reference: FRM 13.1.3, 15.2.3.1

Question 3

Enroute from DAL to ABQ at FL300 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

Q.4.2 What other indications can help you confirm
the situation?

Answer 3

HYDRAULIC indications on MFD, A autopilot
disconnected if in use

Reference: FRM 13.2.2, QRH 13.4

Question 4

Enroute from DAL to ABQ at FL300 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

Q.4.3 What major systems are affected?

Answer 4

Autopilot A, normal landing gear extension and
retraction, ground spoilers, engine 1 thrust reverser
normal hydraulic pressure, normal nose wheel
steering

Reference: FRM 13.2.2, QRH 13.4

Question 5

Enroute from DAL to ABQ at FL300 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

Q.4.4 What Non-Normal Checklist is applicable?

Answer 5

LOSS OF SYSTEM A

Reference: QRH 13.4

Question 6

Enroute from DAL to ABQ at FL300 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

Q.4.5 What does PWB take into account when
computing performance data?

Answer 6

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

Question 7

Enroute from DAL to ABQ at FL300 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

Q.4.6 Can you continue to your destination?

Answer 7

Yes, unless you lose another hydraulic system.

Reference: AOM 5.1.1

Question 8

Enroute from DAL to ABQ at FL300 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

Q.4.7 What should you consider when in the terminal
area?

Answer 8

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