Automatic Flight Operations . . . . . . . . . . . . . . . . . . . . . . . . . . . 4.20.11 Automatic Flight Takeoff and Climb . . . . . . . . . . . . . . . . . . 4.20.11 Automatic Flight Takeoff Profile . . . . . . . . . . . . . . . . . . . . . 4.20.14 Automatic Flight En Route . . . . . . . . . . . . . . . . . . . . . . . . . . 4.20.14 Automatic Flight Approach and Landing . . . . . . . . . . . . . . . 4.20.15 Automatic Flight Approach . . . . . . . . . . . . . . . . . . . . . . . . . . 4.20.17 Automatic Flight Approach Profile . . . . . . . . . . . . . . . . . . . . 4.20.19 Go–Around . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4.20.20 Automatic Flight Go–Around Profile . . . . . . . . . . . . . . . . . . 4.20.23
AFS Operation in Windshear . . . . . . . . . . . . . . . . . . . . . . . . . . . 4.20.24 General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4.20.24 Takeoff or Go–Around . . . . . . . . . . .. . . . . . . . . . . . . . . . . . 4.20.24 Approach and Landing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4.20.24
Command Speed Limiting and Reversion Modes . . . . . . . . . . . 4.20.24 Command Speed Limiting . . . . . . . . . . . . . . . . . . . . . . . . . . 4.20.25 Reversion Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4.20.26
Copyright . The Boeing Company. See title page for details.
4.TOC.0.2 December 1, 2000
Mode Control Panel (MCP)
As installed
GLARESHIELD
Speed Controls
Autothrottle (A/T) ARM Switch
ARM – Arms A/T for engagement. Magnetically held at ARM. A/T engages automatically when following AFDS modes are engaged:
.
LVL CHG
.
ALT ACQ
.
V/S
Copyright . The Boeing Company. See title page for details.
December 1, 2000 4.10.1
Automatic Flight -Controls and Indicators 737 Operations Manual
.
VNAV
.
ALT HOLD
.
G/S capture
.
TO/GA. OFF – disengages A/T and prevents A/T engagement.
Autothrottle Indicator Light
Illuminated (green) – A/T ARM switch in ARM position.
Changeover (C/O) Switch
Push –
.
changes IAS/MACH display between IAS and MACH
.
automatic changeover occurs at approximately FL260.
MCP Speed Condition Symbols
Overspeed or underspeed limiting symbol appears when commanded speed
cannot be reached.
Underspeed limiting (flashing character “A”) – minimum speed
Overspeed limiting (flashing character “8”) –
.
Vmo or Mmo limit
.
landing gear limit
.
flap limit
IAS/MACH Display
Displays speed selected by IAS/MACH selector
.
display is blank when:
.
VNAV mode engaged
.
A/T engaged in FMC SPD mode
.
during 2 engine AFDS go–around
.
displays 110 knots when power is first applied
.
display range is:
.
110 KIAS – Vmo in 1 kt increments
.
.60M – Mmo in .01M increments.
Copyright . The Boeing Company. See title page for details.
4.10.2 December 1, 2000
Automatic Flight -Controls and Indicators 737 Operations Manual
N1 Switch
Push – (light not illuminated)
.
engages A/T in N1 mode if compatible with AFDS modes already
engaged
.
illuminates N1 switch light
.
annunciates N1 autothrottle mode.
Push – (light illuminated)
.
deselects N1 mode and extinguishes switch light
.
engages autothrottles in ARM mode.
N1 Mode
A/T maintains thrust at N1 limit selected from FMC CDU. N1 mode engaged manually by pushing N1 switch if N1 mode is compatible with existing AFDS modes. N1 mode engages automatically when:
.
engaging LVL CHG in climb (except during period for 2 1/2 minutes after
lift-off)
.
engaging VNAV in climb.
SPEED Switch
Push – (light not illuminated)
.
engages A/T in SPEED mode if compatible with engaged AFDS modes
.
illuminates SPEED switch light
.
annunciates MCP SPD autothrottle mode
.
maintains speed in MCP IAS/MACH display.
Push – (light illuminated)
.
deselects speed mode and extinguishes switch light
.
engages A/T in ARM mode.
Speed Mode
Autothrottle holds speed in IAS/MACH display or a performance or limit speed. Speed mode engaged manually by pushing SPEED switch if speed mode is compatible with existing AFDS modes. Speed mode engages automatically when:
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