Boeing 777 FCOM Summary Guide
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Chapter 1 – Aircraft General
---------------------------- Twin■engine long■range widebody aircraft.
- Key systems: Electrical, Hydraulic, Pneumatic, Environmental, Avionics.
- Primary flight displays: PFD, ND, EICAS, standby instruments.
Chapter 2 – Flight Controls
--------------------------- Primary controls: Ailerons, Elevators, Rudder.
- Secondary: Flaps, Slats, Speedbrakes.
- Fly■by■wire with multiple flight control computers.
- Normal, Secondary and Direct modes.
- Roll control augmented by spoilers and flaperons.
Chapter 3 – Hydraulics
---------------------- Three independent hydraulic systems: Left, Center, Right.
- Power flight controls, landing gear, brakes, nose wheel steering, and thrust reversers.
- RAT provides limited hydraulic power in dual failure cases.
- EICAS alerts: HYD PRESS, QTY, TEMP messages.
Chapter 4 – Electrical
---------------------- Two engine■driven generators + APU generator.
- AC primary system with automatic load shedding.
- DC power through TRUs.
- Backup: RAT deployment provides essential AC power.
- Bus tie logic: automatic closing/opening for power source management.
Chapter 5 – Engines & APU
------------------------- Large high bypass turbofan engines.
- FADEC-controlled.
- N1 primary reference for thrust.
- APU provides pneumatic and electrical power on ground and limited electrical in flight.
Chapter 6 – Fuel System
----------------------- Main wing tanks + center tank.
- Fuel pumps: primary AC pumps, backup suction feed.
- Automatic fuel balancing.
- Crossfeed valve for single■engine operations.
- EICAS: FUEL IMBALANCE, LOW FUEL, FUEL PRESS.
Chapter 7 – Pneumatic / Bleed Air
--------------------------------- Sources: engines and APU.
- Provides bleed for packs, anti-ice, hydraulic reservoir pressurization.
- Isolation valves for manifold separation.
- EICAS: BLEED, DUCT LEAK, PACK messages.
Chapter 8 – Environmental Control & Pressurization
--------------------------------------------------
- Two PACs (air conditioning packs).
- Cabin pressure controlled automatically by CPC with manual backup.
- Outflow valves regulate cabin altitude.
- CABIN ALT, AUTO FAIL alerts.
Chapter 9 – Fire Protection
--------------------------- Engines: dual-loop fire detection.
- Fire handle: closes fuel, hydraulic, bleed, and discharges extinguishers.
- APU: auto shutdown + fire bottle.
- Cargo: smoke detectors + extinguishing bottles.
Chapter 10 – Landing Gear & Brakes
---------------------------------- Electronically controlled, hydraulically actuated.
- Normal + alternate gear extension.
- Autobrakes: RTO, 1–4, MAX.
- Brake temperature monitoring.
- Anti-skid + locked wheel protection.
Chapter 11 – Avionics & FMS
--------------------------- Dual FMC, triple IRS.
- LNAV/VNAV for lateral/vertical navigation.
- MCP: mode control (SPD, LVL CHG, VNAV, HDG, V/S).
- Autoland capability depending on operator.
Chapter 12 – Ice & Rain Protection
---------------------------------- Wing anti■ice uses bleed air.
- Engine anti■ice protects nacelle.
- Windshield heat always on in flight.
- Probe heat automatic.
Chapter 13 – Performance
------------------------ Takeoff: V1, VR, V2 computed by FMC or performance software.
- Derated + assumed temperature thrust available.
- Landing: autobrake selection, flap selection, landing distance calculations.
- Contaminated operations require additional margins.
Chapter 14 – Non■Normal Operations
---------------------------------- QRH procedures prioritized by memory items first.
- Key memory items: Engine Fire/Severe Damage, Rejected Takeoff, Cabin Altitude, Unreliable
Airspeed.
- Use NNC flows + cross■check EICAS status pages.
End of Summary