BOEING 707 circa 1970
- Centre Panel
 |
The Main Engine Instruments
- Later-model 707-320Bs and -320Cs has 16 main engine dials for their JT3D engines, arranged in columns for each of
the four engines. From top to bottom they are Engine Pressure Ratio
(EPR), N1 RPM, Exhaust Gas Temperature and Fuel Flow.
- EPR is the main indication of thrust, and these gauges have
numeric readouts in addition to the needles.
- The 707-700 has CFM56 turbofan engines, which use N1 as the major thrust indication. From
top to bottom the gauges are N1 RPM, Exhaust Gas Temperature, N2 RPM and Fuel Flow. The
N1, N2 and EGT gauges are all fitted with electronic digital readouts.
- Above the dials, there are thrust reverser indicator lights.
The left 'REV OPT' light indicates comes on while the reverser is
extending or retracting, while the right blue light comes on when
the engine is established in reversed mode.
- The readouts on the Fuel Flow dials indicate the total fuel used
by each engine. These readouts may be reset to zero by clicking on
them.
- Fuel flow rates are given in pounds or kilograms per hour, depending
on your International preferences.
|
Main Panel Night Lighting
This Boeing 707 panel includes a full set of night lighting switches as
found in the real plane. Most of theses switches are found on the overhead
panel, but the most important switches, listed as follows, are on the main panel.
- CAPT- this lights the captain's primary flight
instrument panel.
- CENTER - this lights the central instrument panel.
- BACKGROUND - this lights the faces of the dials in
the panel.
- F/O -this lights the first officer's primary
flight instrument panel.
Below are some sample images of the night lighting available in this
panel:

Captain's panel, all lighting off |

First officer's panel, backlights only |

Captain's panel, captain and centre flood lighting |

First Officer's panel, first officer floodlight + back light + overhead
light
|
Left Side Instruments
True Airspeed Indicator- this indicates knots TAS, and is useful
for navigation purposes.
Backup Attitude Indicator - unlike the ADI, this can run from
battery power alone, and is used when AC electrical power is unavailable
(for example, failure of all engines).
 |
The Flight Control Positions Indicator
This instrument indicates the position of the flight controls. When the control column or autopilot
are commanding a roll to the left, the aileron position indicator
rolls right - this symbolizes the movement of the ailerons up on the
left hand side of the aircraft, and down on the right hand side. |
Right Side Instruments
Configuration Warning - this light flashes (and an audible
warning sounds) if the aircraft is put into a dangerous or illogical
configuration
- Throttle above 60%, on ground, with flaps not at take-off setting (14
or 25 degrees)
- Throttle above 20% with spoilers extended
- Gear down above 270 KIAS
- Flaps down above 223 KIAS
- Flaps less than 40 in a descent at less than 160 KIAS
- Flaps 40 or greater with gear up
- Speed below 135 KIAS with gear up
Flap Indicators - these indicate the position of the flaps.
Leading Edge Flap Lights- the leading edge flaps deploy
automatically when the trailing edge flaps are set to 14 degrees or
greater.
Flight Director Switches
 |
On this instrument panel, the flight director is completely independent of the autopilot. The Captain and First Officer flight directors are also controlled separately: |
- The Horizontal Mode Selector - This switch selects between
the autopilot's various horizontal modes:
- GA - go-around mode (+12 degrees pitch, wings level)
- OFF - flight director bars are cleared from ADI display
- HDG - finds and holds selected heading (you can alter the
selected heading using the knob on the HSI)
- NAV LOC - tracks a VOR beam, or an ILS localizer (horizontal
only)
- AUTO APP - the flight director will use the existing vertical mode
until the ILS glideslope is reached, then track the ILS beam.
- MAN GS - the flight director will capture an ILS beam
(horizontal and vertical), and then track this beam.
- BB (Back Beam) - gives guidance away from a VOR beacon.
- The Altitude Hold Switch - When this switch is ON, the
flight director commands the aircraft to maintain its current altitude. When the switch is
OFF, the flight director commands the angle of pitch on the Pitch Angle Selector.
- The Pitch Angle Selector - Sets pitch angle (for use with Altitude Hold off and horizontal mode in HDG, NAV LOC or BB). Range from +15 to -10 degrees.
Back to index