Formation

Rule of Thumb climb (valide > FL250) : à 10 000 ft avion, les aiguilles devraient indiquer environ 1 et 4 (diff ≈ 1 PSI, cabin ≈ 4 000 ft). Après no-bleed T/O ou départ terrain haut : plutôt 2 et 3. Si la cabine ne pressurise pas → vérifier bleeds, packs, mode selector, et les cargo compartment fire arm switches.Rule of Thumb climb (valid > FL250): at 10,000 ft airplane, needles should show about 1 and 4 (diff ≈ 1 PSI, cabin ≈ 4,000 ft). After no-bleed T/O or high-field departure: more like 2 and 3. If cabin will not pressurize → check bleeds, packs, mode selector, and cargo compartment fire arm switches.

Descent : altitude cabine (en centaines de pieds) ≈ NM requis. Ex. cabine 4 000 ft → ≈ 40 NM jusqu’au SL. Destination 1 500 ft → soustraire LAND ALT (≈ 25 NM). Distance trop courte → Standby Mode + augmenter le rate.Descent: cabin altitude (in hundreds of feet) ≈ NM required. Ex. cabin 4,000 ft → ≈ 40 NM to SL. Destination 1,500 ft → subtract LAND ALT (≈ 25 NM). Distance too short → Standby Mode + increase rate.

Recirc OFF ≈ 0,6 % / 15 kg (30 lb)/h. Mythe « plus d’air frais » : le ratio fresh/recirc augmente, mais le débit massique total diminue. HEPA (as installed) filtre bactéries/virus. OFF abaisse aussi l’humidité cabine.Recirc OFF ≈ 0.6% / 15 kg (30 lb)/h. Myth “more fresh air”: fresh/recirc ratio rises, but total mass flow falls. HEPA (as installed) filters bacteria/viruses. OFF also lowers cabin humidity.

Water Separator : air froid humide en sortie turbine ACM → coalescer bag (mouvement circulaire) → coude serré sépare les gouttes → drain overboard. Terrain chaud/humide = pack outlet qui goutte. ≤ 2 °C / 36 °F → air chaud anti-glace. Sortie bruyante = bag polyester sale ; bag bloqué → bypass.Water Separator: cold moist air from ACM turbine → coalescer bag (circular motion) → tight bend separates droplets → drain overboard. Hot/humid field = dripping pack outlet. ≤ 2 °C / 36 °F → warm anti-ice air. Noisy outlet = dirty polyester bag; blocked bag → bypass.

Turbofan qui reste après Pack OFF : cycle Pack ON/OFF. Si persiste → remplacer la Pack Valve, pas le turbofan.Turbofan that keeps running after Pack OFF: cycle Pack ON/OFF. If it persists → replace the Pack Valve, not the turbofan.

Rangées 7–8 se plaignent du froid (Sidewall Riser — débit plus élevé). Riser = « window seat sans fenêtre ». Juste derrière overwing : parois froides/givrées = blankets d’isolation mouillés (pas de floor grilles au-dessus du MLG).Rows 7–8 complain of cold (Sidewall Riser — higher flow). Riser = “window seat without a window”. Just aft of overwing: cold/frosted walls = wet insulation blankets (no floor grilles above MLG).

Isolation AUTO ouverte si Pack OFF ou Bleed OFF (switches, pas valves). TFR BUS 1 mort → Isolation figée. Dual eng fail sans AC → Isolation CLOSED → APU starter assist Eng 1 seulement.Isolation AUTO opens if Pack OFF or Bleed OFF (switches, not valves). Dead TFR BUS 1 → Isolation frozen. Dual eng fail without AC → Isolation CLOSED → APU starter assist Eng 1 only.

CPCS : TFR1 >15″, rate 1 890 fpm SLE, cabin 13 875 ft, 8,30 PSID, fault Auto Cont. DCPCS : DC bus >3″, 2 000 fpm, 15 800 ft, 8,75 PSID, OFV control, Cont 1/2.CPCS: TFR1 >15″, rate 1,890 fpm SLE, cabin 13,875 ft, 8.30 PSID, Auto Cont fault. DCPCS: DC bus >3″, 2,000 fpm, 15,800 ft, 8.75 PSID, OFV control, Cont 1/2.

DCPCS : single fail → AUTO FAIL + ALTN (transfert auto). Dual → MANUAL ; FLT ALT / LAND ALT = tirets. MAN momentané puis AUTO peut récupérer certains défauts. Master/slave inversés chaque vol.DCPCS: single fail → AUTO FAIL + ALTN (auto transfer). Dual → MANUAL; FLT ALT / LAND ALT = dashes. Momentary MAN then AUTO may clear some faults. Master/slave swap each flight.

Standby malfunc non indiqué — STANDBY vert reste allumé dès que STBY est sélectionné. Auto Mode = altimètre CDB.Standby malfunction not indicated — green STANDBY stays on once STBY is selected. Auto Mode = Capt altimeter.

FLT/GRD → FLT : légère pressu 200 ft / 0,1 PSID sous le terrain (évite bump rotation). ≤ 18 500 ft : LAND ALT −300 ft dès airborne.FLT/GRD → FLT: slight pressurization 200 ft / 0.1 PSID below field (avoids rotation bump). ≤ 18,500 ft: LAND ALT −300 ft once airborne.

Après No Bleed T/O : sélectionner climb N1 avant de remettre les bleeds ON. Réduire duct : CLB-2, 1 000 fpm V/S, ou anti-ice moteur momentané (TAT < 38 °C, > 1 500 ft AGL).After No Bleed T/O: select climb N1 before bleeds ON. Reduce duct: CLB-2, 1,000 fpm V/S, or momentary engine anti-ice (TAT < 38 °C, > 1,500 ft AGL).

NNC : Pack OFF (pas Bleed — déjà tripped) pour forcer high flow opposé. Wing AI > FL350 peut triper. Single bleed : volume insuffisant pressu + EAI + wing AI deux ailes. APU bleed ≠ wing AI.NNC: Pack OFF (not Bleed — already tripped) to force opposite high flow. Wing AI > FL350 may trip. Single bleed: insufficient volume for press + EAI + wing AI both wings. APU bleed ≠ wing AI.

Régulateur oxygène à 100 % à tâtons. Rate full scale trompeur — regarder DIFF PRESS (grosse aiguille) > 4 PSI. PASS OXYGEN → Timer. TUC 40 000 ft : ≈ 30 s assis / 20 s debout.Oxygen regulator to 100% by feel. Full-scale rate is misleading — watch DIFF PRESS (large needle) > 4 PSI. PASS OXYGEN → Timer. TUC 40,000 ft: ≈ 30 s seated / 20 s standing.

Blowout panels porte FD : ruban + pin pour egress. Deadbolt si la porte s’ouvre en décompression pax.FD door blowout panels: tape + pin for egress. Deadbolt if door opens during pax decompression.

Avant start : indication normale avec APU running. Après start + APU Bleed ON → setup Before Taxi incomplet.Before start: normal indication with APU running. After start + APU Bleed ON → Before Taxi setup incomplete.

DDG(O) : APU doit tourner pour prouver valve fermée ; APU Bleed ON pour build-up ; attendre ≥ 30 s puis duct < 10 PSI. Si > 10 PSI → NOGO(M).DDG(O): APU must run to prove valve closed; APU Bleed ON for build-up; wait ≥ 30 s then duct < 10 PSI. If > 10 PSI → NOGO(M).

In FLT : thrust Eng 1 > idle seulement si Bleed 1 OFF, Isolation CLOSED, DUAL BLEED éteint.In FLT: Eng 1 thrust > idle only if Bleed 1 OFF, Isolation CLOSED, DUAL BLEED extinguished.

Duct à zéro sans BLEED TRIP OFF → Trip Reset avant descente rapide. Split max typique ≈ 24 PSI. High Stage INOP : TOD ≈ 4 × (Alt÷1000) ; tweaks FMC (TW +100 kt, EAI ON Descent Forecast).Duct at zero without BLEED TRIP OFF → Trip Reset before rapid descent. Typical max split ≈ 24 PSI. High Stage INOP: TOD ≈ 4 × (Alt÷1000); FMC tweaks (TW +100 kt, EAI ON Descent Forecast).

Prévol : vérifier airflow belly. Valve coincée → coups juste devant l’échappement. Vibrations Flow Control ≠ tab/LED. BAT BUS fail = cooling perdu sans voyant OFF. Cargo OFF → nearest suitable. EFIS both fans > 90 min → avionics.Preflight: check belly airflow. Stuck valve → bangs just forward of exhaust. Flow Control vibration ≠ tab/LED. BAT BUS fail = cooling lost with no OFF light. Cargo OFF → nearest suitable. EFIS both fans > 90 min → avionics.

CPCS : préférer MAN DC. TFR BUS 2 perdu → STBY + MAN AC morts sans voyant → MAN DC. STBY malfunc non indiqué.CPCS: prefer MAN DC. TFR BUS 2 lost → STBY + MAN AC dead with no light → MAN DC. STBY malfunction not indicated.

Été : warmer / pack opposé / APU un seul pack / RECIRC OFF (cargo ouvert) + HIGH. Hiver : cooler malgré NNC warmer si duct excessif. Un pack INOP dispatch FL250 ; en vol NNC = ceiling. PACK seul (pas TRIP OFF) → Pack Valve peut rester ouverte → OFF manuel.Summer: warmer / opposite pack / APU one pack / RECIRC OFF (cargo open) + HIGH. Winter: cooler despite NNC warmer if duct excessive. One pack INOP dispatch FL250; in flight NNC = ceiling. PACK alone (not TRIP OFF) → Pack Valve may stay open → manual OFF.

Compound WBOH / Eng fail opposé : Isolation OPEN manuelle, Pack (côté en panne) en AUTO/HIGH pour sauver la pressu. Sinon OFV close, cabine +1–2k fpm, fuel ≈ 10× distance à 10 000 ft.Compound WBOH / opposite eng fail: manual Isolation OPEN, Pack (failed side) AUTO/HIGH to save pressurization. Else OFV close, cabin +1–2k fpm, fuel ≈ 10× distance at 10,000 ft.

Reste allumé en vol → heat exchanger dirty. Ne s’allume pas en descente + wet runway → Isolation CLOSE + Pack OFF short final (MEL 21-05 O). Actuator commande door + deflector + louvers.Stays on in flight → dirty heat exchanger. Does not illuminate in descent + wet runway → Isolation CLOSE + Pack OFF short final (MEL 21-05 O). Actuator drives door + deflector + louvers.

Aucune valve auto ; TRIP RESET inutile. Cool 1–2 min après Bleed OFF. OVHT TEST confiance (les deux allumés = OK). BOTH souvent soft/module E1. (400) aussi Trim Air leak.No auto valve; TRIP RESET useless. Cool 1–2 min after Bleed OFF. OVHT TEST confidence (both on = OK). BOTH often soft/E1 module. (400) also Trim Air leak.

Fuel unpress 10k ≈ 10 × distance. Right → FL170 + APU ; Left → 10k. Fausses alarmes détecteurs/vibrations fréquentes. Wing AI : Bleed ON momentané ≤ 1 min, pas one-side.Fuel unpress 10k ≈ 10 × distance. Right → FL170 + APU; Left → 10k. False alarms from detectors/vibration common. Wing AI: momentary Bleed ON ≤ 1 min, not one-side.

Avec PACK allumé : NNC [PACK] d’abord. On recall = dispatchable ; w/o recall + duct chaud = > 88 °C / 190 °F. Trim Air OFF avant retrait AC → moins de nuisance ZONE au prochain power-up.With PACK illuminated: do NNC [PACK] first. On recall = dispatchable; w/o recall + hot duct = > 88 °C / 190 °F. Trim Air OFF before AC removal → fewer nuisance ZONE at next power-up.