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Flight Management System (FMS) for the Agusta AW139/AB139 Helicopter
SPD/FF AND CURRENT GROUND SPEED/FF
METHOD
The performance initialization has three pages. Many items are recalled
from the previous flight to reduce the number of required inputs. These
items are permitted to be changed. The only items not retained from the
previous flight or over a power cycle and are required entries are:
Cruise fuel flow (in PILOT SPD/FF mode only)
D
Initial cruise altitude
D
Fuel quantity (unless gauge value is available)
D
Baggage weight
D
Pilot and passenger weight.
D
An average cruise wind is entered, when available.
Pilot Speed/Fuel Flow (SPD/FF) Method
The PILOT SPD/FF method of performance initialization has a total of
three pages.
PERFORMANCE INIT 1/3 -- The following information is displayed
D
on the PERFORMANCE INIT 1/3 page, shown in Figure 5--4:
— 1L -- Aircraft type (ACFT TYPE) is displayed at 1L. Pilot--entry
is not permitted. The aircraft type is loaded from the aircraft
database (ACDB).
When no aircraft database is loaded, 1L is blank.
The ACDB is loaded when the FMS is installed. The aircraft
database is retained from flight to flight.
The pilot verifies the ACFT TYPE data field has the correct
aircraft type. The system generates incorrect performance
predictions when the FMS contains the wrong ACDB.
A28- - 1146- - 181
REV 3 Mar 2009
Honeywell International Inc. Do not copy without express permission of Honeywell.
Performance
5-7
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