Mode hors ligneOffline
BoredAviator
Hydraulics
SYS
ConditionCondition
Quantité A ou B sous RFL (basse) — ou hausse trompeuse par moussage (cavitation).System A or B quantity below RFL (low) — or misleading rise from foaming (cavitation).
ObjectifObjective
Lire RFL A/B, détecter moussage vs vraie fuite — croiser pression et effets système.Read A/B RFL, detect foaming vs real leak — crosscheck pressure and system effects.
A RFL 4.20 / 88%B RFL 6.40 / 88%STBY LQ 1.40
RFL — rappel tablesRFL — table reminder
FULL → RFL A 4.80 → RFL 4.20 (88%) B 7.20 → RFL 6.40 (88%) STBY LQ @ 1.40 / 50%
Barres RFL / LOW QTY — densification visuelle des tables catalog.RFL / LOW QTY bars — visual densification of catalog tables.
SysFullRFLEIS RFL
A4.804.2088%
B7.206.4088%

Sous RFL → top-up. Très bas → suspecter fuite. Croiser cockpit vs réservoir wheel well — écart = transmetteur suspect.Below RFL → top up. Very low → suspect leak. Crosscheck flight deck vs wheel-well reservoir — discrepancy = suspect transmitter.

Sans maintenance et sans fuite suspectée : transfert via lignes retour (répéter jusqu’à qty dispatch min). Schéma freins.No maintenance and leak not suspected: transfer via return lines (repeat to min dispatch qty). Refer Brake System schematic.

Transfert A → BTransfer A → B

Vérifier cales.Verify wheel chocks in place.

System A EMDPOFF
System B EMDPOFF
Parking BrakesRELEASE
System B PressureDEPRESSURIZE

Pomper freins jusqu’à baisse pression accumulateur.Pump brakes until accumulator pressure drops.

System A EMDPON
Parking BrakesSET

(utilise fluide système A) puis RELEASE — répéter les 2 dernières étapes.(uses system A fluid) then RELEASE — repeat last 2 steps.

Transfert B → ATransfer B → A
Zone dégagée autour reverseur moteur 1.Verify area clear around Engine No 1 Thrust Reverser.
System A EMDPOFF
System B EMDPOFF
System A Flight Control SwitchSTBY RUD
Engine No 1 Thrust ReverserDEPLOY

Fluide STBY (alimenté par B).Uses STBY fluid (fed by B).

System A Flight Control SwitchON
System A EMDPON
Engine No 1 Thrust ReverserSTOW

Retour fluide vers système A.Returns fluid to system A.

Certaines SOP pressurisent d’abord B pour éviter transfert A→B via shuttle freins si accumulateur < 1 500 PSI.Some SOPs always pressurize B first to avoid A→B transfer via brake shuttle valves when accumulator < 1,500 PSI.
Quantité « haute » trompeuseMisleading “high” quantity
Moussage (cavitation / gel pressurisation) → indication qty augmente alors que le système est malade — voir LOW PRESSURE clignotant.Foaming (cavitation / pressurization freeze) → qty indication rises while the system is unhealthy — see blinking LOW PRESSURE.