2103/A Horizontal Situation Indicator
1. Brief Description: The ID-2103/A Horizontal .
2. Applicable Tools and Test Equipment: Not
Situation Indicator is installed in the AH-1S and CH-
need at the time of this printing.
47D aircraft. It receives its inputs from selected
3. Applicable Publications:
3vigation sets and displays various readouts utilizing
11-1520-236-23P (Pertains to AH-1)
a compass card, glideslope printer, course divation
11-1 520-240-23P-1 (Pertains to CH-47D)
bearing printers, and digital range/course readout.
It also includes heading and course selector knobs.