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AGUSTA AB 139 TRAINING MANUAL

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CHAPTER 80 - STARTING

SECTION 80-10 - CRANKING

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OPERATION

To start the engines in AUTO mode, the pilot uses theEngine Control Panel.

To start the engines in MANUAL mode, the pilot uses boththe Engine Control Lever and the Engine Control Panel.

The engine starting AUTO or MANUAL mode is selectedvia the 1 (2) ENG GOV switch on the pilot collective grip.

Besides the engine start, cranking is required to perform thedry motoring run for engine washing / ventilation and the wetmotoring run to check for fuel leak or engine preservation /depreservation during maintenance operation.

To start the engine in AUTO mode proceed as follows:

set the 1 (2) ENG GOV switch on the pilot collectivegrip to AUTO

set the Engine Control Lever 1 (2) to FLIGHT positionto allow the engine fuel flowing

set the FUEL PUMP 1 (2) switch of the FUEL CON-TROL PANEL to ON

set the FUEL SHUT-OFF VALVE 1 (2) of the FUELCONTROL PANEL to ON

set the ENG 1 (2) MODE selector switch of the ECP to

IDLE/FLIGHT position to open the shutdown solenoidand so to allow the engine fuel flowing and to providethe electrical power to start and spark igniters

the green legends START/IGN are displayed on left/right side of NG and ITT scale respectively

the EEC de-energizes the start-ignition relays at 50

1% NG.

NOTE The quick engine start procedure (AUTO mode)

may be carried out to speed up the take off.Set the ENG 1 (2) MODE selector switch toFLIGHT directly, then the second engine to FLTwhen NG No. 1 (2) is above 25%.

NOTE The engine start duty cycle is the following: 30 seconds on, 1 minute off 30 seconds on, 1 minute off

30 seconds on, 30 minutes off.To start the engine in MANUAL mode proceed as follows:

set the 1 (2) ENG GOV slector switch on the pilot col-lective grip to MANUAL and note the amber legendMAN in view on TQ/PI scales

set the ENGINE CONTROL LEVER 1 (2) to OFF posi-tion

set the FUEL PUMP 1 (2) switch of the FUEL CON-TROL PANEL to ON

set the FUEL SHUT-OFF VALVE 1 (2) of the FUELCONTROL PANEL to ON

set the ENG 1 (2) MODE selector switch of theENGINE CONTROL PANEL to IDLE position to openthe fuel shutdown solenoid to allow the subsequentengine fuel flowing

press the START push-button switch on the ENGINECONTROL LEVER 1 (2) and advance the ECL as nec-essary to allow the engine fuel flowing

the green legends START/IGN are displayed on left/right side of NG/ITT scales respectively

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once the engine reaches the 49 1% NG, the GCU dis-

engages automatically the starter-ignition relaysTo start the engine for the dry motoring run, following anaborted start shutdown, allows a 30 sec fuel drain periodbefore re-starting.The procedure is used to clear internally trapped fuel andvapor or if there is evidence of a fire within the engine.Observe the starter-generator duty cycle limitations duringthe re-start attempts.Proceed as follows:

set the 1 (2) ENG GOV selector switch either to AUTOor MANUAL

set the ECL 1 (2) to OFF either to AUTO or MANUAL

set the FUEL PUMP/VALVE 1/2 switches to OFF

pop the IGN 1 (2) circuit breaker out

set the ENG 1 (2) MODE selector switch to IDLE if

AUTO otherwise OFF press the start push-button switch if MANUAL

press a second time the start push-button switch tostop the dry motoring run sequence if MANUAL

set the ENG 1 (2) MODE selector switch to OFF to stopthe dry motoring run sequence if AUTO.

To start the engine for the wet motoring run proceed asfollows:

set the 1 (2) ENG GOV selector either to AUTO orMANUAL

set the ECL 1 (2) to FLIGHT either to AUTO or MAN-UAL

set the FUEL PUMP/VALVE 1 (2) switches to ON

pop the IGN 1 (2) circuit breaker out

set the ENG 1 (2) MODE selector switch to IDLE press the start push-button switch if MANUAL. The fuel

flows is delivered to the engine as fuel pump speedincreases

press a second time the start push-button switch tostop the wet motoring run sequence if MANUAL

set the ENG 1 (2) MODE selector switch to OFF to stop

the wet motoring run sequence if AUTO.

CONTROL AND INDICATORS

The ECP housed on the console and the pilot collectivelevers are involved in the starting when the auto mode isperformed.The ECL housed on the overhead panel, the ECP and the

pilot collective levers are instead involved in the startingwhen the manual mode is performed.The MFD provides the green legend START during thestarting.The malfunctions are displayed in the CAS message win-dow #1.

The ECP provides the following functions:

ENG 1 (2) MODE selector switch : OFF - when the N. 1 (2) engine not running or it

shuts down the engine or during the N. 1 (2) enginedry motoring procedure when Manual selected

IDLE - allows the N. 1 (2) engine starting, the mini-mum on ground (65% NF) and the N. 1 (2) engine

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stabilization for a period of 60 sec. during the shut-

down phase or during the N. 1 (2) engine wet motor-ing procedure both Auto and Manual mode.

FLT - allows the N. 1 (2) engine quick starting at theflight nominal speed (100% NF)

NOTE The MFD and PFDs display the green legendIDLE on the left side of NF scale of the tripletachometers. The amber legend FAIL is displayed

on the triplo tachometer in case of TQ/NF sensorsfailure. It replaces the green legend IDLE.

NOTE During the starting phase, the NG digital readoutwith the associated pointer are white until the49% NG is reached.The two green legend START / IGN are removedat the same percentage.

The pilot collective stick provides the following functions:

ENG 1 (2) GOV AUTO/MANUAL selector switch :

AUTO - allows the N. 1 (2) engine automatic startingand provides the N. 1 (2) engine automatic control

MANUAL - allows the N. 1 (2) engine manual start-ing / wet motoring / dry motoring and provides the N.

1 (2) engine manual control

NOTE When in MANUAL, the amber legend MAN inreverse video is displayed on the left side of TQscale (MFD Main and Cruise pages) and PI scale(PFDs).

The ECL provides the following functions:

ENG 1 (2) START push-button switch : when pressed the N. 1 (2) engine manual starting /

wet motoring / dry motoring is engaged in Manualmode

CAPTIONS

The caution provided in the CAS message window is as

follows: 1 (2) HOT START :

the N. 1 (2) engine ITT exceeds limits during enginestarting

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N. 1 STARTER-GENERATOR LOCATION

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N. 2 STARTER-GENERATOR LOCATION

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CRANKING CONTROLS

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CRANKING INDICATING (SHEET 1 OF 2)

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CRANKING INDICATING (SHEET 2 OF 2)

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