Genesys IDU-450 8.0H, Pilot'S Manual, Page: 102 / 396

Section 3 Display Symbology
3-28 IDU-450 EFIS Software Version 8.0H (Rotorcraft) 1 st Ed Nov 2018
1) Manual RNP: The pilot may override the automatic accuracy types by
setting a manual RNP value.
2) Automatic RNP: These are based upon RNP values, which are coded
in the navigation database. The EFIS looks at the leg coding on all legs
other than those on the final approach segment. On the final approach
segment, the EFIS looks at the “Level of Service” record for those
approaches, which have RNP transition legs, and then goes to LP or
LPV minima for the final approach.
3) Default TSO-C146C operation: As specified as per Table 3-10 for
enroute, terminal, and various approach modes according to the “Level
of Service” record.
Table 3-10: CDI Behavior and Color
CDI Pointer and Condition Color or Behavior
Full Scale Deflection Flash
Slaved to GPS/SBAS Scale is appropriate FSD value for
mode of flight:
Enroute: ±2NM
From Enroute to Terminal:
Change from ±2 NM FSD to ±1 NM
FSD over distance of 1 NM; start
transition when entering terminal
mode.
From Terminal to Enroute:
Change from ±1 NM FSD to ±2 NM
FSD over distance of 1 NM; start
transition when entering enroute
mode.
From Terminal to Approach: If
VTF, switch immediately.
Otherwise, change from ±1 NM
FSD to approach FSD over
distance of 2 NM; start transition at
2 NM from FAWP.
From Approach to Terminal:
Change to

1 NM.
From Departure to Terminal : If
initial leg is aligned with runway,
change from ±0.3 NM FSD to ±1
NM FSD at the turn initiation point