# 4.2 Engine Start

### Objective

To safely start the engines while ensuring proper coordination with ground crew and maintaining full control of the aircraft during pushback or stand departure.

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</div>### General Principle

Engine start must only be performed when:

- Aircraft is correctly configured
- Area around aircraft is clear
- Ground crew confirms readiness

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</div>### Mandatory Condition

👉 **Engine start is only permitted after “CLEAR TO START” from ground crew**

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</div>## Engine Start WITH Pushback

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</div>### Preconditions

- Pushback clearance received
- Ground crew connected (headset)
- Beacon → ON
- APU BLEED → ON
- Fuel Pumps → ON

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</div>### Procedure

**PF:**

- “Request pushback and start”

**PM:**

- Communicates with ground

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</div>### Pushback Initiation

- Parking Brake → RELEASE (on instruction)
- Pushback begins

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</div>### Engine Start Sequence

After **“CLEAR TO START”**:

**PF:** “Start Engine 1”  
**PM:** “Starting Engine 1”

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</div>**PM:**

- ENG MODE Selector → IGN/START
- ENG 1 MASTER → ON

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</div>### ECAM Monitoring (PM)

- N2 rotation
- Fuel Flow at ~20% N2
- EGT rise
- Stable parameters

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</div>### Callouts

- “N2 increasing”
- “Fuel Flow”
- “EGT rising”
- “Engine 1 stabilized”

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</div>- Repeat for Engine 2

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</div>### During Pushback

- Monitor aircraft movement
- Maintain communication with ground crew
- Avoid distractions during engine start

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</div>### After Pushback

- Parking Brake → SET (on instruction)
- Ground crew disconnect confirmed

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</div>## Engine Start WITHOUT Pushback (Self Maneuvering Stand)

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</div>### Preconditions

- Area around aircraft visually confirmed clear
- No ground crew in hazard area
- Beacon → ON
- APU BLEED → ON
- Fuel Pumps → ON

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</div>### Procedure

**PF:**

- Confirms: “Area clear”

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</div>### Engine Start

**PF:** “Start Engine 1”  
**PM:** “Starting Engine 1”

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</div>**PM:**

- ENG MODE Selector → IGN/START
- ENG 1 MASTER → ON

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</div>### ECAM Monitoring

- N2 rotation
- Fuel Flow
- EGT rise
- Stabilization

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</div>- Repeat for Engine 2

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</div>### Key Difference

- No pushback coordination required
- PF responsible for visual clearance

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</div>## After Start Actions (Both Cases)

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</div>**PM Flow:**

- ENG MODE Selector → NORM
- APU BLEED → OFF
- APU → OFF (if not required)
- Anti-Ice → AS REQUIRED
- Flaps → SET
- Pitch Trim → SET

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</div>### Key Principles

- Engine start is a controlled and monitored process
- Ground crew safety has priority
- Standard sequence must always be followed

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</div>### Core Rule

**“No clear area – no engine start.”**

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</div>### Outcome

- Engines started safely
- Aircraft ready for taxi
- Full coordination between cockpit and ground

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### Single Engine Taxi Policy

To improve fuel efficiency and reduce engine wear, single engine taxi should be used when operationally feasible.

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</div>### Application

Single engine taxi is required when:

- Expected taxi time exceeds **10 minutes**

Applicable airports are defined in the respective **airport briefing**.

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</div>### Procedure

- Start **Engine 1 only** during engine start phase
- Keep **Engine 2 OFF**

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</div>### Considerations

- Maintain sufficient thrust for taxi
- Monitor aircraft handling (asymmetric thrust)
- Use additional thrust carefully if required