Honeywell FMZ Series Pilot's Manual page 129

Flight Management System (FMS) for the Agusta AW139/AB139 Helicopter
PERF MODE 1/1 -- The PERF MODE page, shown in Figure 5--5,
D
is displayed by pushing the OR prompt at 2R, as shown in
Figure 5--4. The PERF MODE page is used for selection of the
mode for performance calculations.
— 2L -- When CURRENT GS/FF (ground speed/fuel flow) is
selected, performance calculations are based on current ground
speed and current fuel flow. However, when on the ground, the
FMS default ground speed is used. The FMS default ground
speed is displayed at 1R on the first page of any stored flight plan.
Once airborne, the current ground speed is used. The current
fuel flow is displayed at 1R of the FUEL MGT 1/2 page. The fuel
flow value is permitted to be overridden by pilot entry and is then
used.
— 3L -- Selecting PILOT SPD/FF bases performance calculations
on pilot--entered speed schedules, winds and cruise fuel flow.
When using the PILOT SPD/FF option, the cruise fuel flow must
be entered at 2R on the PERFORMANCE INIT 2/3 page.
Automatic adjustments are made for the higher fuel flow in climb.
Entered winds and sensed winds (once airborne) are included in
the ground speed predictions used for time en route estimates.
A28- - 1146- - 181
REV 3 Mar 2009
Honeywell International Inc. Do not copy without express permission of Honeywell.
Figure 5- -5
PERF MODE 1/1
00546.06
Performance
5-9