Table of Contents
Advertisement
Flight Management System (FMS) for the Agusta AW139/AB139 Helicopter
1L -- The current or pilot entered values for pressure altitude (P ALT)
D
and outside air temperature (OAT) are displayed at 1L. Pilot entered
pressure altitudes and outside air temperatures are used for what--if
scenarios. The values displayed for P ALT and OAT defaults to the
values obtained from air data from the ACDB.
When the pressure altitude is greater than 14,000 ft, the message
CHECK T/O ENVELOPE is displayed in the scratchpad. When the
pressure altitude is greater than 20,000 ft, the OAT is less than
--40°C, or the OAT is greater than the value obtained from the HD
Limit ISA +35 Table, the message CHECK FLIGHT ENVELOPE is
displayed in the scratchpad.
Default values are displayed in small font and pilot--entered values
displayed in large font.
1R -- The density altitude (DENS ALT) associated with the P ALT and
D
OAT displayed at 1L is displayed at 1R. Pilot--entry is not permitted
at 1R.
When the density altitude is greater than 14,000 ft, the message
CHECK T/O ENVELOPE is displayed in the scratchpad. When the
density altitude is greater than 20,000 ft, the OAT is less than --40°C,
or the OAT is greater than the value obtained from the HD Limit
ISA +35 Table, the message CHECK FLIGHT ENVELOPE is
displayed in the scratchpad.
2L -- The hover ceiling in ground effect (HOV CEIL IGE) is the
D
maximum allowable density altitude for hovering when the
helicopter is in ground effect at maximum takeoff power and is
displayed at 2L. The HOV CEIL IGE is determined from Agusta
performance tables using gross weight and OAT.
When the HOV CEIL IGE is lower than the DENS ALT displayed at
1R, the HOVE CEIL IGE altitude at 2L is displayed in reverse video
and pilot entry is not permitted.
When the cargo HOOK load is > 0, HOV CEIL IGE is displayed in
reverse video to identify the cargo hook and hover ceiling in ground
effect are not consistent with the presence of the load on the cargo
hook.
2R -- The HOV CEIL OGE (hover ceiling out of ground effect) is the
D
maximum allowable density altitude for hovering when the
helicopter is out of ground effect at maximum takeoff power and is
displayed at 2R. The OV CEIL OGE is determined from Agusta
performance tables using gross weight and OAT.
When HOV CEIL OGE is lower than the DENS ALT displayed at 1R,
the HOV CEIL OGE altitude at 2R is displayed in reverse video and
pilot entry is not permitted.
Performance
5-18
Honeywell International Inc. Do not copy without express permission of Honeywell.
A28- - 1146- - 181
REV 3 Mar 2009
Advertisement
Table of Contents
