To enable temperature compensation of the minimum altitude, select the TEMP
COMP, option for
the minimum altitude reference type (in addition to OFF, BARO,
and RAD ALT). The temperature at the destination airport is used for this purpose.
The temperature at the destination airport is invalidated when a different approach
is loaded into the active flight plan or when the system powers up. This disables
temperature compensation of both the published approach waypoint altitudes on
the active flight plan page and the minimum altitude.
The minimum altitude selection type changes to BARO if it was previously set to
TEMP COMP.
Temperature compensation of the minimum altitude is not dependent on use of
barometric altitude for vertical guidance on the FAS, and is therefore available for
any type of approach; in fact, only the destination airport and temperature are
required.
Compensating the approach minimums bug simply determines where the
minimums reference is displayed on the altimeter.
No adjustment to the barometric altitude is made as a result of temperature
compensating the minimums reference.
Approach Level Downgrade
Some automatic approach service downgrade may be performed automatically
upon loss of SBAS or when GPS approach alarm limits are exceeded, depending
on the approach service level that has been loaded in the flight plan and activated.
This automatic downgrade is annunciated to the pilot through the display of
APR DWNGRADE in the CAS window and a change in the annunciated service
level in the HSI.
As APR DWNGRADE may not be triggered under certain circumstances, the HSI
annunciation shall be
considered as the primary means to annunciate any
approach downgrade.
Under certain circumstances when the GNSS integrity requirement is not met, the
approach may be aborted. This is annunciated through the display of
ABORT APR , while the service level annunciation is no longer displayed on the
HSI.
If SBAS becomes unavailable
on an RNAV LNAV/VNAV approach,
L/VNAV is
displayed in yellow,
the system switches to LNAV/VNAV (Baro-VNAV) service level
and
APR DWNGRADE will be displayed (the VDI will be flagged "NO GP" until
APR DWNGRADE has been acknowledged).
If APR DWNGRADE is acknowledged, L/VNAV is displayed in magenta.
Section 7
Description
Pilot's Information Manual
PIM TBM 960 - Edition 0
Rev. 01
Page 7.15.12
PIM - DO NOT USE FOR FLIGHT OPERATIONS
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