3.5
ARMSacquisitioncycles
..................... 51

3.6
ARMSdecision.ow
....................... 52

4.1
HUMSanalysisprocess.
..................... 60

4.2
Basicdatatypes........................... 60

4.3
Datainterfacelayers.
....................... 61

4.4
Globaldata.ow........................... 63

4.5
Discrepancy
reporting
and
follow-up.
. . . . . . . . . . . . . . 64
4.6
Condition
indicator
with
discrepancy
markers.
. . . . . . . . . 65
5.1
LH
Free
Wheel
Gear
RMS
versus
indicate
airspeed.
.
.
.
.
.
.
70
5.2  
LH
Free
Wheel
Gear
RMS
versus
lateral
pitch.
.
.
.
.
.
.
.
.
.
70
5.3  
LH
Free
Wheel
Gear
RMS
versus
pitch
attitude.
.
.
.
.
.
.
.
.
70
5.4  
LH
Free
Wheel
Gear
RMS
raw
and
corrected
for
environmen-
talchanges.
............................ 71
5.5  
Magnitude
PSD
of
fwd
gear
acquisitions
order
by
speed.
. . . 73
5.6  
Fwd
gear
H(pe)(ω).
........................
75

5.7  
Fwd
gear
H.(ias)(ω)......................... 76

5.8  
PSD
of
corrected
fwd
gear
acquisitions
order
by
speed.
. . . . 77
6.1  
Normalindicatorbehavior..................... 81

145

6.2
Stepchangeduetomaintenance.
. . . . . . . . . . . . . . . . 81
6.3
Trendduetocomponentdegradation............... 81

6.4
Indicatormodeloverview.
.................... 84

6.5
Normalindicatorbehavior..................... 86

6.6
Normalprogressioncomponents.. . . . . . . . . . . . . . . . . 86
6.7
Stepchangeduetomaintenance.
. . . . . . . . . . . . . . . . 87
6.8
Stepprogressioncomponents.
.................. 87

6.9
Trendduetocomponentdegradation............... 88

6.10
Trendprogressioncomponents.
. . . . . . . . . . . . . . . . . 88
6.11
Progression
generated
by
the
con.guration
(Tab.
6.4)
.
.
.
.
.
89

6.12Indicatordecomposition.
　
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