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Enstrom TH-28/480 Series Maintenance Manual Supplement 8
G1000H Integrated Flight Deck System
May
14/14
Page
1-49
J.
N1, N2, NR, TOT Miscompare CAS Alerts
(1)
Pull EIS 2 (CB151) circuit breaker.
(2) Verify that the
N1 MISCOMPARE
,
N2 MISCOMPARE
,
NR MISCOMPARE
,
and
TOT MISCOMPARE
CAS alerts and the
MASTER CAUTION
annunciator are flashing.
(3)
Verify an audible ping is heard in the crew headset.
(4)
Acknowledge by pressing the
MASTER CAUTION
annunciator/ switch.
(5)
Verify
the
MASTER CAUTION
annunciator is extinguished and
N1
MISCOMPARE
,
N2 MISCOMPARE
,
NR MISCOMPARE
, and
TOT
MISCOMPARE
CAS alerts are steady on.
(6)
Push in EIS 2 (CB151) circuit breaker.
(7)
Verify
the
N1 MISCOMPARE
,
N2 MISCOMPARE
,
NR MISCOMPARE
, and
TOT MISCOMPARE
CAS alerts are extinguished.
K. TOT Exceedance CAS Alert
(1) Drive TOT indication to 1,702°F/928°C using the TOT Calibration Check
(reference the TH-28/480 Series Maintenance Manual, paragraph 7-45).
(2) Verify that the
TOT EXCEEDANCE
CAS alert and the
MASTER CAUTION
annunciator is flashing.
(3)
Verify an audible ping is heard in the crew headset.
(4)
Acknowledge by pressing the
MASTER CAUTION
annunciator/ switch.
(5)
Verify
the
MASTER CAUTION
annunciator is extinguished and
TOT
EXCEEDANCE
CAS alert is steady on.
(6) Drive TOT indication down to ambient using the TOT Calibration Check
procedure.
(7)
Clear
the
TOT EXCEEDANCE
CAS alert from the CMC data log via the
configuration page. (Contact Enstrom Product Support for assistance.)
(8)
Verify
the
TOT EXCEEDANCE
CAS alert is extinguished.
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