BoredAviator
Automatic Flight
FCC
ConditionCondition
Deux Flight Control Computers — FCC L (A) / FCC R (B) — un par canal autopilot. Dual channel requis pour Autoland.Two Flight Control Computers — FCC L (A) / FCC R (B) — one per autopilot channel. Dual channel required for Autoland.
ObjectifObjective
Comprendre redondance, signes A/P P/RST + F/D flag, CBs AFCS, et matrice capacité après panne.Understand redundancy, A/P P/RST + F/D flag cues, AFCS CBs, and capability matrix after failure.
CanauxChannels
FCC L (A) CMD A · CWS A · F/D L FCC R (B) CMD B · CWS B · F/D R DUAL BOTH CHANNELS = AUTOLAND One channel OK for RVSM / P-RNAV (SOP) — not for dual Autoland
FCC L/R — dual channel pour Autoland.FCC L/R — dual channel for Autoland.
Panne d’un FCCSingle FCC failure
In FLT
On GND

MEL 22-01 MEL 22-02

Les deux FCCBoth FCCs
Si les deux FCC tombent : feux ambre MACH TRIM FAIL et SPEED TRIM. Pas d’A/P. Autoland impossible. Continuer teaching via hand-fly / F/D selon reste dispo.If both FCCs fail: amber MACH TRIM FAIL and SPEED TRIM lights. No A/P. Autoland impossible. Continue teaching via hand-fly / F/D per remaining capability.
Circuit breakersCircuit breakers
CBUsageUse
P18-3 AFCSChecks A/P n’engage pasA/P will-not-engage checks
P18-0 STAB TRIM A/PStab trim A/PA/P stab trim
P6-2C AFCS FCCCycle si un seul canal refuseCycle if single channel refuses
P18-1E AFCS ENGAGE INTERLINKAvec P6-2CWith P6-2C
P6-2B · P18-1DFCC / MCP AFDS — AFDS ne répond pasFCC / MCP AFDS — AFDS not responding
ARINC MCP → FCCARINC MCP → FCC

Troubleshoot MCP / engage

Engagement — checks rapidesEngage — quick checks
  1. A/P Disengage paddles MCP
  2. Control Wheel A/P Disengage switches
  3. IRS Both on 1 / 2 · EFI Both on 1 / 2
  4. A/P Stab Trim Cutout
  5. Hydraulique · IRS · Δ RA · commandes libresHydraulics · IRS · Δ RA · free controls
Rôles FCC détaillésFCC roles detailed

CommandesCommands

  • Reçoit sélections MCP (modes, course, altitude…).Receives MCP selections (modes, course, altitude…).
  • Calcule ordres surfaces + stab trim A/P.Computes surface orders + A/P stab trim.
  • Affiche modes sur FMA / barres F/D du côté associé.Displays modes on FMA / F/D bars for associated side.

RedondanceRedundancy

  • Canaux indépendants — panne unilatérale ≠ perte totale AFDS.Independent channels — unilateral fail ≠ total AFDS loss.
  • Engage interlink CB si un canal refuse l’engagement.Engage interlink CB if one channel refuses engagement.
  • Dual sync requis pour FLARE / Autoland.Dual sync required for FLARE / Autoland.
Capacité après panneCapability after failure
ÉtatStateRVSMP-RNAVAutoland
2 FCC OKBoth FCC OKOKOKDual OK
1 FCC fail1 FCC failsi autre A/Pif other A/P1 FCC suffit1 FCC enoughNO
2 FCC failBoth FCC failNONO A/PNO

Liens teachingTeaching links

Pitch transducer / hardover / LOC → troubleshoot. Trim aileron interdit → limitations. MCP blank / knobs → MCP faults.Pitch transducer / hardover / LOC → troubleshoot. Aileron trim prohibited → limitations. MCP blank / knobs → MCP faults.

Troubleshoot Limitations MCP faults QRH

A/P disengage · Autoland · Système · LimitationsA/P disengage · Autoland · System · Limitations