FCTM HYD ABN

Question 1

PTU principle:

Answer 1

The PTU operates automatically in flight if the differential pressure between the green and yellow systems exceeds 500psi.

Allows to cover the loss of one engine or engine driven pump.

Question 2

USE OF PTU IN CASE OF FAILURE:

In the case of reservoir low level, reservoir overheat or reservoir low pressure, the PTU must be:

Answer 2

Switched off immediately, as required by the ECAM, to avoid a PTU overheat 2 minutes later.

A PTU overheat may lead to the loss of the second hydraulic circuit.

Question 3

When required by the ECAM the PTU should be switched OFF without delay in the following cases:

Answer 3

HYD G(Y) RSVR LO LVL
HYD G(Y) RSVR OVHT
HYD G(Y) RSVR LO AIR PR (only if pressure fluctuates)

Question 4

Single hydraulic failures will have very little effect on?

Answer 4

Aircraft handling but will cause a degradation to CAT 3 single.

Question 5

Dual hydraulic failures are significant due to the following consequences (depending on the circuit affected):

Answer 5

Loss of AP
Flight control law degradation
Landing in abnormal configuration
Extensive ECAM procedures associated with workload and task sharing considerations
Significant considerations for approach and landing.

Question 6

Will the autopilot be available with a dual hydraulic failure?

Answer 6

No, however the FD and A/THR will be.

Question 7

Depending on affected hydraulic circuits, aircraft handling characteristics may be significantly affected. Therefore the PF should ensure:

Answer 7

Manoeuvre with care.

Question 8

With a G+B HYD failure or G+Y HYD failure the PF will be very busy flying the aircraft in:

Answer 8

Alternate law

Question 9

Is a double hydraulic failure an emergency situation?

Answer 9

Yes!! Red LAND ASAP

A MAYDAY should be declared.

Question 10

The approach briefing should concentrate on safety issues as it will be a hand flown approach with certain handling restrictions:

Answer 10

• Use of selected speeds on FCU
• Ldg gear gravity extension
• Approach configuration and flap lever position
• Approach speed VAPP
• Tail strike awareness
• Braking and steering considerations
• Go around call out, aircraft configuration and speed

Question 11

A landing gear extension will be carried out with:

Answer 11

Reference to the QRH.

Question 12

G+B HYD SYS LO PR

Autopilot

Answer 12

Inop

Question 13

G+B HYD SYS LO PR

Yaw Damper

Answer 13

YD 2 only

Question 14

G+B HYD SYS LO PR

Control Law

Answer 14

Alternate law and direct law when the landing gear is extended

Question 15

G+B HYD SYS LO PR

Stabiliser

Answer 15

Available

Question 16

G+B HYD SYS LO PR

Spoilers

Answer 16

2 spoilers per wing

Question 17

G+B HYD SYS LO PR

Elevator

Answer 17

Right elevator only

Question 18

G+B HYD SYS LO PR

Aileron

Answer 18

Inop

Question 19

Remaining systems, Ldg go around G+B HYD SYS LO PR

Slats/flaps

Answer 19

Flaps only, Slow

Question 20

Remaining systems, Ldg go around G+B HYD SYS LO PR

L/G extension

Answer 20

Gravity only

Question 21

Remaining systems, Ldg go around G+B SYS LO PR

Braking and anti skid

Answer 21

Alternate braking only, anti skid and nose wheel steering available

Question 22

Remaining systems available, Ldg go around G+B HYD SYS LO PR

Reverse

Answer 22

Reverse 2 only

Question 23

Remaining systems available, GO AROUND
G+B HYD SYS LO PR

Ldg gear retract

Answer 23

No retraction available