Ata 80 cfm56 3

START AND IGNITION

START AND IGNITION

PNEUMATIC SOURCES FOR STARTING

ENGINE START SYSTEM

START VALVE

28 VDC POWER FROM

BATTERY BUS

(80 PSI)

3/8”

ENGINE STARTER

ENGINE STARTER INSTALLATION

5TH STAGE START BLEED VALVE

5TH STAGE START BLEED VALVE

ENGINE START CIRCUIT

STARTING WITH APU

STARTING WITH APU

MINIMUM

30 PSI

STARTING WITH GROUND CART

CROSS BLEED START

ENGINE START SWITCH

ENGINE START SEQUENCE

FUEL AND PNEUMATIC PRESSURE …………………….. CHECK

IGNITION SELECT SWITCH ……………………………... IGN L/R

START SWITCH ……………………………………………… GRD

N2 RPM INDICATOR …………………………………. INCREASING

N1 RPM INDICATOR …………………………………. INCREASING

START LEVER

(N2 = 25% O

MAXIMUM MOTORING & MINIMUM N2 = 20%) ……….. IDLE

ENGINE START SEQUENCE (CONT)

FUEL FLOW INDICATOR ………………………………. INDICATION

EGT INDICATOR ………….……………………………... NORMAL

START SWITCH (N2 = 46% RPM) …………………….. OFF

OIL PRESURE INDICATOR ……………………………. INDICATION

ENGINE INSTRUMENTS …………………………. STABLE AT IDLE

ENGINE START SEQUENCE

FUEL PUMPS …….ON MINIMUM…….30 PSI

SELECT RIGHT/LEFT IGNITER

ENGINE START SEQUENCE

N1 ROTATION

BEFORE

ENGINE START

LEVER TO

IDLE

ENGINE START SEQUENCE

ENGINE START SEQUENCE