PHI GOM HYDRAULICS EPs Flashcards
If both HYD 1 PUMP FAIL AND HYD PUMP 2 FAIL will the #3 system pressurizer the primary servos
YES
HYD 1 PUMP FAIL AND HYD PUMP 2 FAIL
FLY…restrict control inputs to moderate rate
ID- DUAL HYDRAULIC PUMP FAILURE
Checklist- TAB 17
With HYD 1 PUMP FAIL will the #3 system supply pressure to that system?
YES
Will the Landing gear operate normally with the loss of the #3 HYD PUMP
No, Use the emergency blow down
HYD 3 RSVR LOW
Fly…Lower Landing gear
ID- #3 HYDRAULIC SYSTEM LEAK
CHECKLIST TAB 18
With a single #1 or #2 RSVR LOW Descend to….
minimum safe altitude
HYD 1 RSVR LOW and TR SVO PRES
FLY…Descend to minimum safe altitude, Land as soon as POSSIBLE.
ID- HYDRAULIC LEAK PAST THE TAIL ROTOR SERVO
CHECKLIST-TAB 18
HYD 1 RSVR LOW MR SVO 1 PRES TR SVO 1 PRES HYD 1 PUMP FAIL SAS 1 PRES
FLY…Descend to minimum safe altitude,
Max 30 AOB and 120 knots
avoid abrupt maneuvers, Land as soon as possible
ID- HYDRAULIC LEAK PRIOR TO THE TAIL ROTOR SHUTOFF
CHECKLIST- TAB 18
Landing criteria for HYD 1 TEMP Alert or HYD 1 TEMP LIMIT
Alert- Land as soon as practical. 110 deg
Limit- Land as soon as possible. 135 deg
[ACFT with LDI mod]
HYD 1 RSVR LOW
HYD 2 RSVR LOW
TR SVO 1 PRES
TR SVO 2 PRES
Land….
Land as soon as possible with Tail rotor fixed pitch (training website)
Hydraulic EPs are on tab __, __,and___.
17, 18, and 19.
Immediate action step for: HYD 1 RSVR LOW MR SVO 1 PRES TR SVO 1 PRES HYD 1 PUMP FAIL SAS 1 PRES HYD 2 RSVR LOW MR SVO 2 PRES TR SVO 2 PRES HYD 2 PUMP FAIL SAS 2 PRES BOOST PRES
LAND IMMEDIATELY
Dual Hyd leak PRIOR to the TR shutoff
Immediate Action: Descend to a minimum safe altitude.
NOTE: With HYD #1 & #2 RSVR LOW caution light: land immediately.
Will the #3 pump activate for a leak in the #1 or #2 system?
No.
The Backup Isolation valve will not allow the #3 pump to pressurize a system that is leaking.
If the pump fails without a leak then yes it will.
In flight what conditions will cause the #3 Hyd pump to activate?
1 or #2 pump FAILURE
Landing gear
APU Accumulator low
