Hydraulic System Flashcards
What Should The 3 HYD Gauges Read Before Start
0 , 0 , 1250 ± 50
What Should The 3 HYD Gauges Read After Start
3000 , 0 , 3000
Until 70% Checks Then 3000 , 3000 , 3000
How Is HYD 1 And HYD 2 Powered
Separate Engine Driven Pumps Through The Accessory Gear Box
What Does HYD 1 Provide
Flight Controls, General Services
(Flaps, Slats, Speed Brakes, Landing Gear, NWS, Wheel Brakes, Hook, LBAR)
What PSI Do You Lose General Services
The Priority Valve Closes at 1,500 ± 100 PSI
It Will Re-Open If You Go Back Above
When Does The HYD Pressure Relief Valve Open
3,600 PSI
When Does The HYD Caution Illuminate
1,660 ± 110 PSI
Extinguishes when Above 2,000 PSI
What Does HYD 2 Provide
Flight Controls Only
When Will The RAT Deploy And When Will It Reset
Deploys At 1,500 ± 100
Re-Sets When The N2 Is Above 45% And HYD 2 Is Above 1,800 PSI
What Are Indications Of A Good RAT Deployment
RAT Caution Light Illuminated, HYD 2 Fluctuating Between 2,500 - 3,000 PSI
Warning: Sustained high-frequency, high amplitude control inputs during flight with
- RAT only hydraulic pressure could result in loss of aircraft control. Ejection outside the safe ejection*
- envelope may occur if control is lost during a landing attempt.*
Do You Need To Emergency Extend The Gear For A HYD 2 Fail
No
HYD 2 Is Flight Controls Only
Should You Attempt A HYD 2 Reset If The RAT Deploys
You Have 1 Attempt To Reset HYD 2 If The RAT Caution Is Illuminated And HYD 2 Is above 1,800 PSI
Why Do We Reset HYD 2 During The 70% Checks
To Reduce Engine Loading On Startup
What Are The Preflight Numbers For The HYD Accumulators
1,100 ± 50 PSI
What Do The HYD Accumulators Do
Provide Smooth Operation To The System During Periods Of High Demand
What Does A Check Valve Do
Restricts Flow In One Direction
Brake Accumulator Preflight Numbers
Above 1,300 PSI External
1,250 ± 50 PSI Internal Prior To Start
What PSI Do You Lose Emergency Flaps / Brakes
Emergency Flaps: 2,000 PSI
Emergency Brakes: 1,300 PSI
1,300 PSI Is Accumulator Only Pressure, Do Not Test Brakes Prior To Touchdown When Relying On Emergency Brakes
What Charges The Emergency Brake Accumulator
HYD 1 Charges It To 3,000 PSI
How Should You Expect To Recover With A HYD Fail
Monitor Until Below 200kts
- Emergency Gear
- Gear
- Emergency Flaps
- Anti-Skid Off
- Don’t Test Brakes
- Hook Down
- Take A Trap
WILL, WHAT DOES BRAKE ACCUMULATOR BELOW 600 ± 50 PSI MEAN
ISNT IT FAILED BELOW 1300PSI????
SHITS LONG GONE BY THEN.
PLZZZZZZZZZZ TELLL MEEEEEEEEEEEEEE
