ENG

Automatic Start Sequence Abort

• The automatic start sequence on the ground is aborted under specific conditions.

Thrust Reversers

• Actuation of thrust reversers occurs automatically during the thrust computation.

FADEC Electrical Supply

• FADEC is supplied with electrical power to manage the engine functions efficiently.

Manual Mode Thrust Levers

• When thrust levers are positioned between the climb detent and idle, specific operational limits apply.

EGT Limits

• The EGT limit at TOGA power setting on the A320 CEO is critical for engine safety.

Oil Temperature and Limits

• The maximum continuous oil temperature limit can be exceeded under certain conditions, providing operational flexibility.
• Minimum starting oil temperature is required to ensure proper engine function.

Minimum Oil Requirements

• Minimum oil quantity for dispatch on the A320 CEO is vital for engine operation.
• Minimum oil pressure at ground idle must be maintained for safe engine performance.

N1 and N2 Limits

• Maximum N1 and N2 values are established for engine performance criteria.
• The maximum N2 for starter engagement is set to protect engine components during startup.

Starter Operation Restrictions

• During automatic starts on the ground, there are specific restrictions to starter operation to ensure safety.
• Starter cooling time requirements must be adhered to after multiple starts.

Reverse Thrust Usage

• The maximum reverse thrust may be deployed to certain speeds during landing.

A321 Flex Temperature

• The maximum allowable flex temperature for the A321 is established to optimize performance during takeoff.

Thrust Management

• Reduced thrust is restricted under specific operational conditions to maintain safety and performance.
• In cruise manual thrust, N1 should be limited to avoid engine overstress.

Flex Thrust Use

• At Toulouse conditions, if the corrected Flex TEMP is acceptable, flex thrust can be used for take-off.

EGT Indications

• EGT indication on the A320 CEO becomes red when exceeding predefined limits on the E/W display.

FADEC System

• FADEC (Full Authority Digital Engine Control) manages engine parameters for optimal performance and safety.

Fuel System Valves

• The HP shut-off valve closure is facilitated by a specific device to prevent fuel flow in emergencies.
• An adequate fuel flow is ensured by a designated valve during engine operation.

Engine Fuel Supply

• Engine continues to receive fuel even if the fuel filter becomes clogged, ensuring operational reliability.

Cranking Selection

• Cranking may be manually activated by specific cockpit controls.

Pack Valves During Start

• During an automatic starting sequence, pack valves close to redirect airflow.

Engine Start EGT

• Maximum EGT during engine start on the A320 CEO is defined to prevent engine damage.

Continuous Ignition

• FADEC automatically activates continuous ignition under critical flight conditions to ensure engine reliability.

Oil Cooling and Pressure

• Oil is cooled through an efficient cooling system; pressure indicators turn red below a certain threshold on the A320 CEO.

Autothrust Mode

• In autothrust mode, thrust calculated by FMGC is inherently limited based on flight parameters.

Thrust Reverser Conditions

• Activation of thrust reversers occurs when specific conditions are met, enhancing aircraft deceleration.

Engine Thrust Indications

• REV green appears on the N1 indicator when thrust reversers are ready for deployment.
• A TLA signal from the SECs is required for reverse thrust deployment; one system may be lost under certain conditions.

Low Pressure Rotor N1

• The low pressure rotor (N1) is designed to optimize engine performance efficiently.

A/THR Engagement

• A/THR can be engaged under specific operational conditions to maintain desired thrust levels.

Disconnect Procedures

• If the instinctive disconnect pushbutton is engaged for more than 15 seconds, including alpha floor, A/THR is initialized.

Take-off Power Settings

• At take-off, power settings such as FLX or TOGA are crucial for optimal performance.

Engine Failure Procedures

• After a FLX take-off with an engine failure, selecting MCT becomes necessary for safe operation.

Engine Fire Response

• Activation of the engine fire P/B switch on the engine fire panel results in the closure of relevant fuel flow systems.

FMA Messages

• ASYM amber message indicates asymmetrical thrust conditions requiring pilot attention.
• LVR MCT flashing white message on the FMA signals non-compliance with thrust lever positioning during specific flight phases.
• LVR CLB flashes white if throttles are not positioned correctly during climb, indicating a need for adjustment.

Thrust Rating Computation

• Thrust rating limits are computed based on several performance factors, ensuring safe operation of the aircraft.