Refer to figure.
Regarding the FMA indications, what stage of flight is this?
Refer to figure.
EASA learning objective 022.06.04.01.02 states: 'Describe where the FMAs are normally shown and how the FMAs will be divided into sections (as applicable to aircraft complexity): vertical modes; lateral modes; autothrust modes; autopilot and flight director annunciators; landing capability.'
EASA learning objective 022.06.02.01.04 states: 'Explain the following lateral modes: heading (HDG)/track (TRK); VOR (VOR)/localiser (LOC); lateral navigation/managed navigation (LNAV or NAV).'
EASA learning objective 022.06.05.01.04 states: 'Describe the autoland sequence including the following: FMAs regarding the landing capability of the aircraft; the significance of monitoring the FMAs to ensure the automatic arming/engagement of modes triggered by defined radio altitudes or other thresholds; in the event of a go-around, that the aircraft performs the go-around manoeuvre both by reading the FMAs and supporting those readings by raw data; during the landing phase, that ‘FLARE’ mode engages at the appropriate radio altitude, including typical time frame and actions if ‘FLARE’ does not engage; after landing, that ‘ROLL-OUT’ mode engages and the significance of disconnecting the autopilot prior to vacating the runway.'
EASA learning objective 022.09.01.01.02 states:'Explain the operation of an autothrust system with regard to the following modes: take-off/go-around (TOGA); climb or maximum continuous thrust (MCT), N1 or EPR targeted (THR CLB, THR MCT, N1, THR HOLD, EPR); speed (SPEED, MCP SPD); idle thrust (THR IDLE, RETARD/ARM); landing (RETARD, THR IDLE).'
The figure in the question shows a B737 PFD with its associated flight mode annunciator (FMA). The FMA is divided into 3 columns which indicate, from left to right; Autothrust Mode, Lateral Mode and Vertical Mode.
RETARD - the autothrust has retarded the thrust to flight idle.
VOR/LOC - the autopilot/flight director is coupled to the ILS localiser for the approach. ROLL OUT is armed and will engage when the aircraft is on the runway to maintain the centreline.
FLARE - at 50 ft on an automatic approach the pitch channel starts flaring the aircraft for landing.
These FMA's indicate that the aircraft is in the latter stages of an autoland approach.
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