CSP–900RFM206E–1
ROTORCRAFT FLIGHT MANUAL
MD900 With PW 206E
Systems Description
Original
7–41
Torque display:
Displayed in % torque. The IIDS obtains engine torque
from the EEC. If the EEC fails, the IIDS calculates torque by using
N
G
, OAT, and pressure altitude measurements. The vertical bargraphs
and three digit indicators on this display indicate torque in percent
(%). The vertical bar has four ranges as defined below:
Green segments indicate continuous operating range including Maxi
mum Continuous Power (MCP).
Yellow segments indicate:
Transient Take Off Power (TOP) operating range (5 minute limit)
OEI operating range (2.5 minutes)
Top red segments − do not exceed limit.
NOTE
:
Even though the IIDS displays engine torque, the transmission sets the torque
limit for helicopter operations, and therefore, the displayed torque limits are
lower than those for the engine as stated in the Pratt & Whitney Maintenance
Manual.
EGT
is indicated by two vertical bargraphs and a three digit indicator
showing EGT in 1
°
C increments. Displayed on the IIDS as EGT. Pratt
& Whitney refers to this measurement as MGT (Measured Gas Tempera
ture). The vertical bargraph has four ranges as defined by the display
mode; they are:
Green segments: continuous operating range (MCP operating range)
Yellow segments: transient operating range (TOP or OEI)
Top red segment: do not exceed limit
NOTE
:
The IIDS provides a time count–down on the alphanumeric display when the
pilot enters TOP, OEI, or transient flight conditions. Should the pilot exceed
the count–down, the IIDS then provides an time overcount, and exceedance
and data logs are created.
Red warning annunciators on the primary display are for EGT, Torque,
N
R
, N
P
,
and EEC FAIL. Yellow caution annunciators
are for EEC noncriti
cal fault and EEC MAN (manual mode).
Содержание MD900 with PW206E
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