HYD G ENG 1 PUMP LO PR (PTU INOP)

Question 1

Triggering conditions?

Answer 1

Pump outlet pressure is equal to or less than 1750psi.

System resets when pump outlet pressure reaches 2200psi or greater.

Question 2

Green engine 1 pump:

Answer 2

OFF

Question 3

ASSOCIATED PROCEDURES:

Answer 3

G SYS LO PR

Question 4

SECONDARY FAILURES:

Answer 4

• WHEEL
• LDG gear gravity extension will be required
• F/CTL
• SPLRS 1 and 5 will be inoperative

Question 5

STS:

Answer 5

L/G GRVTY EXTN
-Required because no green system pressure available to do a normal gear extension.

LDG DIST PROC APPLY
-Hydraulic Green system low pressure.

SLATS/FLAPS SLOW
-Green hydraulic system power for Slats and right wing flaps.

CAT 3 SINGLE
-All hydraulic systems must be available for redundancy in order to have CAT 3 DUAL.

Question 6

INOP SYSTEMS:

Answer 6

Green HYD
SPLR 1+5
CAT 3 Dual 
Auto Brk
Norm Brk
L/G Retract
Reverser 1
PTU
G eng 1 pump
Yaw damper 1

**All require green system pressure.