FOR REFERENCE USE ONLY

Hydraulic Sys Quantity Loss Effects

Systems Lost / Items on system lost
Sys 1 / Loss of manual control of secondary climb/dive valves
Flaps / slats move at half speed
Castering Inop (Alt Caster should be kept to a minimum)
Alternate pitch trim Inop (Screw drive)
Upper rudder powered by one system (can ↑ 100% app by 15)
Lose No 1 T/R
NLG and aft MLG – Emer Ext Norm Hyd not avail
Rudder pedal steering inop (monitor sys 4 quantity)
Sys 2 / Norm and Man pitch trim inop (Nut drive) (Use center console)
Lower rudder powered by only one system (can ↑ 100% app by 15)
Lose No 2 T/R
*Retract RAT to prevent auto deployment
*Set inboard elevator left sys 3 to Norm, Sys 2 to off
Emergency Generator Inop
Ailerons powered by only one system
Inboard & Outboard elevator powered by only one system
Sys 3 / Upper and lower rudder powered by 1 sys (can ↑ 100% app by 15)
Lose No 3 T/R
*Set inboard elevator right sys 3 to off, Sys 2 to Norm
Inboard & Outboard elevator powered by only one system
Sys 4 / Flaps and slats move at half speed
Fwd MLG – Emer Ext Norm Hyd not avail
Norm Brakes Inop (FE monitors Hyd sys 1 pressure) use ALT
Lose No 4 T/R
Emer NLG Steering inop
Sys 1 & 2
Everything in 1+2 plus this / All Pitch trim inop
Left aileron & Spoiler 9 unpowered (float) – effects negligible
Sys 1 & 3
Everything in 1+3 plus this / Outboard elevators unpowered (⅓ pitch control lost)
Upper rudder unpowered, lower powered only by sys No 2
* (use MinQ, avoid x-wind > 15kts, can ↑ 100% app by 15)
Sys 2 & 3
Everything in 2+3 plus this / Inboard elevators unpowered and float (pitch control very limited!)
Only ALT pitch trim avail (center console)
Lower rudder unpowered, upper rudder powered only by sys No 1
Spoiler panels 7 unpowered - effects negligible
* (use MinQ, avoid x-wind > 15kts, can ↑ 100% app by 15)
Sys 1 & 4
Everything in 1+4 plus this / Only way to extend NLG is CED accumulator (2500psi min)
Normal gear extension, normal and alternate brakes, anti-skid, nose wheel steering, flaps, slats, ground spoilers, and castering inop
Loss of variable feel unit in pitch control (pitch sensitive!)
Use emergency braking (not in flight, could deplete brake pressure)
Sys 2 & 4
Everything in 2+4 plus this / Right aileron unpowered and Spoiler panels 5 unpowered – effects negligible
Sys 3 & 4
Everything in 3+4 plus this / Loss of 3 and 4 T/R
Spoiler panels 6 unpowered – effects negligible

(2008) Dominik M. Paul, 155AS, Memphis, TN