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Section 7 IFR Procedures
7-34
IDU-450 EFIS Software Version 8.0H (Rotorcraft)
1
st
Ed Nov 2018
7.13.3. Loss of Integrity Caution Monitoring
The EFIS provides a caution, independent of any operator action, when the
equipment has a loss of integrity monitoring. When HPL (Horizontal
Protection Level) exceeds the applicable HAL (Horizontal Alert Limit) for
the longer than applicable time to alert and HPL
SBAS
exceeds the HAL for
the current navigation mode for longer than 2 seconds. There are two types
of HPL, HPL
FD
, or HPL
SBAS
but only one transmitted by the receiver as valid
at any time.
Table 7-11: Loss of Integrity Caution Monitoring
Mode of Flight
HAL
Time to Alert
(See Note 1)
As manually set
or automatically
retrieved
10 Seconds (RNP<2NM)
30 Seconds (otherwise)
Enroute
2 NM
30 Seconds
1 NM
10 Seconds
0.3 NM
10 Seconds
0.3 NM
10 Seconds
0.3 NM
10 Seconds
Departure
0.3 NM
10 Seconds
Note 1: Only applicable prior to sequencing FAWP. Meeting loss of
integrity criteria after sequencing the FAWP is defined as LON.
7.14. Manual Holding Patterns
Most waypoints within an active flight plan can have a manual holding
pattern created with the following parameters:
1) Inbound course to the holding fix with 1° increments relative to
magnetic or true north.
2) A left or right turn direction.
3) A turn distance, settable in either time (increments of 0.1 minutes from
0.5 minutes to 5.0 minutes) or distance (increments of 1 nautical mile
from 1 nautical mile to 25 nautical miles). When a time setting is used,
the speed used to calculate distance is the holding speed set in EFIS
limits.