CSP
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902RFM207E
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1
ROTORCRAFT FLIGHT MANUAL
MD900 (902 Configuration with PW 207E)
Systems Description
Original
7
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50
Reissue 2
The exceedance Log provides a ``snapshot'' record of the parameter data
at a particular moment in time. This type of record occurs whenever
a parameter exceedance is detected. This recording function is only
active when N
G
for either engine AND N
R
is greater than 50 % AND
EGT on either engine is greater than 400
°
C
This feature is capable of storing 100 exceedance Logs. Exceedances
are recorded for EGT, engine torque, transmission torque, N
G
, N
P
, N
R
(high), engine oil pressure (low), transmission oil pressure (low), and
cargo hook.
Exceedance logs maybe either recorded or downloaded to the GBMC.
Perform Exceedance Log Menu procedure (Ref. Figure 7-41) to access
cumulative usage data.
The Fault Log
contains data associated with fault discrete data from
the EEC's and a BIT failure that was detected in the IIDS, BMS, or
aircraft transducers/sensors. This type of log is recorded whenever an
IIDS, EEC, or aircraft sensor fault is detected. The system is capable
of storing 100 Fault Logs.
Fault logs maybe either recorded or downloaded to the GBMC.
Perform the Fault Log Menu procedure to access data (Ref. Figure 7-43).
IIDS setup contains (Ref. Figure 7-44) data that reflects the current
configuration of the aircraft, such as, aircraft serial number, engine
type installed, engine serial number, fuel calibration, operating soft
ware, etc.
On power up, the IIDS uses information in the setup log to compare
the current Torque and EGT trim values from the EEC to the values
stored in the IIDS setup log to assure the data collected by the IIDS
remains with the respective engine. If there is a discrepancy, a fault
log is created and certain engine ASCM functions are disabled for the
affected engine(s): Exceedance Logs for N
G
, N
P
, Torque, EGT; Power
Assurance function (including trend logs); and Cumulative Logs (cycle
counting, SSO, FSO, TSN, and engine run time).
To recover from this disable function, the Setup Log must be revised
to match the values from that specific engine(s) through the GBMC.
Once the Setup Log has been revised, a power-up of the IIDS will verify
the new data. If the new values match, all engine ASCM functions are
restored.
Exceedance
Log
Fault
Log
IIDS Setup Log
Summary of Contents for MD900 Explorer
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