Narco Avionics NAV122D, Installation Manual

Page: 39 / 41

INSTALLATION
SECTION 2
2.5.2 Continued
C. Flying at an altitude of 6000ft AGL, channel the NAV Receiver to a VOR facility 25nm
away and fly inbound.
1. Operate the communication transceiver: VOR left-right indicator transient deviations
should not exceed 2 dots and steady state errors should not exceed 0.5 dot.
D. Engage autopilot and couple to VOR. Check tracking and intercept performance.
LOC and GS
Flying at an altitude of 3000ft AGL, channel the NAV Receiver to a LOC frequency and fly
inbound to intercept ILS.
1. From point of interception to termination of test neither LOC or GS warning flags should
appear.
2. Establish glide path and fly the ILS approach: request ground control confirmation of on-
glide path condition.
3. While on-glide path, maneuver aircraft through normal pitch and roll altitudes: Left-right
and up-down indicators should perform normally and a warning flag should not be visible at
any time.
4. Engage autopilot and fly a coupled ILS approach.
2.6 AIRCRAFT LICENSE REQUIREMENTS
A. Form 337
NAV122D or NAV122D/GPS was installed in accordance with NARCO Avionics
Manual part number 03128-0620. Enter electrical load as specified in Table 2.5. Enter
actual circuit breaker or fuse values used.
B. Log Book
Calculate weight and balance using values from Table 2.5 plus cable and accessory weights.
TABLE 2.5 GENERAL SPECIFICATIONS
GENERAL NAV122D NAV122D/GPS
A. Mechanical
Physical Dimensions
Weight
Figure 2-3
2.5 lbs.
Figure 2-3
2.6 lbs.
B. Electrical
NAV, P810, pins 7 and 26
Supply Voltage
Current, less pilot lamps, 14V
Current, less pilot lamps, 28V
Pilot lamp current 14V
28V
Circuit Breaker Rating
13.75 VDC
350 MA
400 MA
250 MA
250 MA
2 AMPS
13.75 VDC
350 MA
400 MA
250 MA
250 MA
2 AMPS
2-25