Operating the NCS-31

JOINT ADVANCED MULTI-ENGINE T-44A

UHF:

NOTE: Several types of UHF radios are installed. Slight modification to procedures may be required. Checks

may be performed in any convenient order.

(1). Rotate DIM control. Verify display intensity is adjustable and set desired intensity. On some

radios, rotating control fully clockwise will activate test function.

(2).

Check mode selector.

Select READ. Verify preset frequency displayed.

Select MANUAL. Verify each knob changes a digit.

Select GUARD. Verify 243.0 displayed.

Select PRESET. Verify preset channel displayed.

(3).

Verify function switch BOTH (selected frequency + guard).

(4).

Activate TEST. Verify all 8's displayed. Return display to normal.

(5).

Select squelch OFF. P and CP adjust UHF volume as required, then select SQ (squelch on).

NAV 1, NAV 2

When performing all navigation checks, utilize the T-I-N-T method: Tune, Identify, Navigate, Test.

Normally, NGP and CONOR LOM are the only local NAVAIDs receivable on the ground at NGP.

At foreign fields, try to use NAVAIDs at the field or nearby fields to test the accuracy of your

NAVAIDs. If no NAVAIDs are available, use a VOT or just perform an internal test of each

NAVAID as applicable. Your IAP for the airport should be open for reference and properly secured

with an approach plate clip or other device.

OPERATING THE NCS-31

Enter and use a VOR or localizer in NAV 1:

Depress the WPT pushbutton on the CDPU, the desired number of the waypoint (1-10), then the

desired frequency. Final zeros are not required; i.e., 114.0 should be entered as 114. To use the

waypoint, D-U-D the waypoint by (D) releasing the DME HOLD pushbutton, (U) depressing the

USE pushbutton on the CDPU, and (D) depressing the DME HOLD pushbutton. The new frequency

will appear in the NAV 1 RRU and DME will appear in the DME readout (if DME is available).

Preset, recall, and use a VOR or localizer in NAV 1:

Depress the WPT pushbutton on the CDPU, the desired number of the waypoint (1-10), the desired

frequency, and then PRE. The frequency will go into the NCS-31 memory for later recall. Do not

"over-write" a waypoint, which may be required later in the flight. To recall a waypoint, depress

WPT, then the number of the stored waypoint. The recalled waypoint number and frequency will

appear on the CDPU display. To use the recalled waypoint, D-U-D the recalled waypoint using the

above procedures.

Enter and use a VOR or localizer in NAV 2:

Depress the NAV pushbutton on the CDPU, the desired frequency, then press USE. The new

frequency will appear in the NAV 2 RRU. The NAV pushbutton controls only NAV 2. DME is

never available from NAV 2.

Preset, recall, and use a VOR or localizer in NAV 2:

Depress the NAV pushbutton on the CDPU, the desired frequency, then press PRE. The frequency

will go into the NCS-31 memory for later recall. Only one preset frequency is available in NAV 2.

To recall the preset waypoint, depress the NAV pushbutton, then PRE (the frequency will appear in

the CDPU display), then USE. The preset frequency will then appear in the NAV 2 RRU.

COCKPIT PROCEDURES

E-15