ConditionCondition
Approche ILS Autoland — dual-channel A/P (les deux FCC) requis ; A/T obligatoire pour CAT III (DH < 50 ft ou sans DH). Teaching Normal — Urgence/QRH séparé.ILS Autoland approach — dual-channel A/P (both FCCs) required; A/T mandatory for CAT III (DH < 50 ft or no DH). Normal teaching — Emergency/QRH separate.
ObjectifObjective
Enchaîner prérequis → FMA LOC/G/S/FLARE → RETARD 27 ft → logique G/A touchdown ; connaître impact perte d’un canal.Sequence prerequisites → FMA LOC/G/S/FLARE → RETARD 27 ft → G/A logic at touchdown; know single-channel impact.
PrérequisPrerequisites
- Les deux A/P (FCC) pour Autoland dual-channel.Both A/P (FCC) for dual-channel Autoland.
- ILS / G/S valides ; COURSE MCP = QFU ; APP armé.Valid ILS / G/S; MCP COURSE = QFU; APP armed.
- FMA : LOC puis G/S ; dual → FLARE.FMA: LOC then G/S; dual → FLARE.
- A/T : RETARD à 27 ft RA ; idle au touchdown.A/T: RETARD at 27 ft RA; idle at touchdown.
FLARE · ROLLOUT · G/A
- FLARE armé en approche dual — logique G/A A/P armée.armed on dual approach — A/P G/A logic armed.
- Logique G/A retirée au touchdown train principal.G/A logic removed at main-gear touchdown.
- TO/GA au touchdown n’initie pas le go-around.TO/GA at touchdown does not initiate go-around.
- G/A auto A/T : ~1 500 fpm ; 2e TO/GA → pleine poussée.Auto G/A A/T: ~1,500 fpm; 2nd TO/GA → full thrust.
- Un canal perdu → minima CAT I–II single-channel.One channel lost → CAT I–II single-channel minima.
Poussée · landingThrust · landing
Poussée manuelle pendant Autoland : ne pas couper brutalement à 27 ft → hard landing / tail-strike. FCTM : VREF+5 avec A/T (pas d’additive vent).Manual thrust during Autoland: do not slam idle at 27 ft → hard landing / tail-strike. FCTM: VREF+5 with A/T (no wind additive).
- A/T entre en RETARD à 27 ft RA même A/P OFF.A/T enters RETARD at 27 ft RA even with A/P off.
- Landing manuel + A/T engagé = rarement SOP 737 (standard 777/787).Manual landing + A/T engaged = rarely 737 SOP (standard on 777/787).
- Certaines cie : A/T ARM en finale manuelle (underspeed + G/A thrust).Some operators: A/T ARM on manual final (underspeed + G/A thrust).
- ΔTLA > 10° avec FLARE armé → A/T P/RST (vrai warn).ΔTLA > 10° with FLARE armed → A/T P/RST (real warn).
Checks LOC avant APPLOC checks before APP
- A/P engagé (dual si Autoland)A/P engaged (dual if Autoland)
- Fréquence ILS on-sideOn-side ILS frequency
- MCP Course = QFUMCP Course = QFU
- APP + FMA LOC/FAC arméAPP + FMA LOC/FAC armed
- Si tout OK mais pas de capture → ARINC/FCC → autre A/PIf all OK but no capture → ARINC/FCC → other A/P
Séquence FMA AutolandAutoland FMA sequence
| ÉtapeStep | A/T | Lat | Vert |
|---|---|---|---|
| APP armed | SPEED / N1 | LOC/FAC arm | G/S arm |
| LOC capture | SPEED | LOC | G/S arm |
| G/S capture | SPEED | LOC | G/S |
| Dual / FLARE | SPEED | LOC | FLARE |
| 27 ft RA | RETARD | LOC | FLARE |
| Touchdown | idle / off ~2 s | — | G/A logic OFF |
CAT minima — rappelCAT minima — reminder
- CAT III : A/T mandatory (DH < 50 ft / no DH). Fail A/T pendant (EASA) → continue possible poussée manuelle.CAT III: A/T mandatory (DH < 50 ft / no DH). A/T fail during (EASA) → may continue with manual thrust.
- Perte A/T path : NO CAT 3B (EASA) / NO CAT II–III (FAA).A/T disengage path: NO CAT 3B (EASA) / NO CAT II–III (FAA).
- MCP blank / un FCC : minima → CAT I.MCP blank / one FCC: minima → CAT I.
Go-around dual-channelDual-channel go-around
- A/P armé G/A seulement quand FLARE annunciated.A/P armed for G/A only when FLARE is annunciated.
- Après touchdown principal : TO/GA ne lance pas G/A AFDS.After main-gear touchdown: TO/GA does not start AFDS G/A.
- Si TO/GA n’avance pas les manettes (sans rouge) : switch levier ou N1 SET pas AUTO.If TO/GA does not advance levers (no red): lever switch or N1 SET not AUTO.
A/T · FMA · A/P disengage · Urgence → hub QRHA/T · FMA · A/P disengage · Emergency → QRH hub