Center Section

The center section of the left console controls fuel and navigation related settings.

Fuel Control Panel

Fuel Control Panel

Internal Wing Dump Switch

Two position switch (1) which, when placed in DUMP, closes off the wing fuel cells from transfer into the fuselage fuel cells and dumps fuel from the valves at the wing fold trailing edge. Placing the switch back to the NORM position closes the dump valves and reconnects the wing cells for transfer to the fuselage.

The entire fuel is dumped in roughly 15 minutes.

Internal Wing Transfer Switch

A two position switch (2) which controls flow of wing cell stored fuel to the fuselage fuel tanks; NORMAL permits transfer, whereas STOP TRANS ceases flow from the wings to the fuselage feed tanks.

Transfer only occurs without weight on wheels and if the internal tanks have reached a certain fuel level already.

Refueling Select Switch

This covered switch (3) determines which tanks will be refuelled during an air-to-air refueling cycle: internal (INT ONLY) or all tanks (ALL).

Air Refueling Switch

Two position toggle switch (4) used for extending (EXTEND) and retracting (RETRACT) the air-to-air refueling door. Placing the switch into EXTEND also illuminates the air-to-air refueling receptacle lamp to assist the tanker boom operator.

If, during AAR, the boom disconnects and the DISENGAGED light illuminates, this switch has to be flipped to RETRACT and back to EXTEND to reset the system and allow the boom to connect again.

External Transfer Switch

A three position toggle switch (5) determining which externally mounted tanks are currently transferring fuel to the fuselage tanks: CENTER (centerline tank), OFF (none), or OUTBD (outboard wing tanks).

Transfer only occurs without weight on wheels and if the internal tanks have reached a certain fuel level already.

It is not possible to transfer from the wing tanks and external tanks at the same time. If both are selected, the external tanks will take priority.

Boost Pump Check Switches

A pair of two position spring-loaded switches (6) are provided to confirm function of the fuel boost pumps. Can only be checked with the engine master switches OFF. Holding either switch will energize the respective boost pump, thus showing a positive pressure value on the fuel pressure indicator.

VOR/ILS Control Panel


The nav vol knob (1) controls the volume of the VOR/ILS audio system that indicates being tuned to the desired frequency by repeating the morse code identifier of the selected station.

Must be moved out of the full CCW position to provide power to the VOR/ILS system.

MB Vol Knob

The MB vol knob (3) controls the volume of the tone played when flying over a marker-beacon transmitter, for example on the final approach during landing.

Frequency Knobs

A set of two knobs (2) for tuning the VOR/ILS frequency. The outer knob controls the first three digits, while the inner knob sets the two decimal digits.

Valid frequencies range from 108.00 to 117.95 MHz.


A button (4) to initiate a built-in test of the VOR system. See VOR/ILS Test for details.

AFCS Control Panel


Stability Augmentation Channel Switches (Yaw/Roll/Pitch)

Three two-position switches (1) enable individual channels of stability augmentation for Yaw, Roll, and Pitch. ENGAGE (forward) sets the respective chanel stability augmentation on.

See 3.1.2 Flight Controls & AFCS for further information.

AFCS Mode Switch

The two position switch (2) enables AFCS mode, which can maintain and hold maneuvers and attitudes at up to ±70 degrees of pitch, 70 degrees of bank, and in all 360 degrees of azimuth. If engaged when the airplane is less than ± 5° from wings level, then the airplane will maintain a wings level attitude, and will hold the engaged heading. Deactivated by selecting the switch aft, or with a rapid control input.

Altitude Hold Switch

The two position switch (3) activates the altitude hold function of the AFCS which will maintain current baromertic altitude.