T B M
PILOT’S OPERATING HANDBOOK
850
SECTION 7
DESCRIPTION
Page 7.15.4
Edition 1 -- June 22, 2007
Rev. 14
If SBAS integrity is available, it will be used to provide vertical guidance.
During execution of a GPS approach with LNAV/VNAV service levels, while
the aircraft is between the FAF and MAP, excessive deviation indicators
appear as white vertical lines to indicate an area where the vertical deviation
exceeds 75 feet.
If the glide--path indicator is within an area of excessive deviation, the
glide--path indicator becomes yellow and the vertical lines also become
yellow.
RNAV (GPS) or RNAV (GNSS)
– LPV magenta annunciation in CDI
LPV approaches provide both localizer precision lateral guidance and a
vertical path definition.
SBAS integrity is required to execute the approach.
Approach level downgrade
Some automatic approach service downgrade may be performed
automatically upon loss of SBAS or GPS approach alarm limits being
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 an APR
DWNGRADE advisory message and a change in the annunciated service
level in the HSI.
As the APR DWNGRADE advisory message may not be triggered under
certain circumstances, the HSI annunciation shall be considered as the
primary mean to annunciate any approach downgrade.
Under certain circumstances, when the GNSS integrity requirement are not
met nor approach level is available the approach may be aborted.
This is annunciated through an ABORT APR advisory message and the
service level annunciation being removed from the HSI.
If SBAS becomes unavailable on an RNAV LNAV/VNAV approach, L/VNAV
yellow annunciation is shown, the system will downgrade to LNAV service
level (LNAV shown in magenta) and the APR DWNGRADE advisory
message will be generated. The VDI will be flagged NO GP.
PIM - DO NOT USE FOR FLIGHT OPERATIONS
Summary of Contents for TBM 850
Page 1: ...PILOT S INFORMATION MANUAL TBM 850 Edition 1 PIM DO NOT USE FOR FLIGHT OPERATIONS ...
Page 142: ...3 1 PIM DO NOT USE FOR FLIGHT OPERATIONS ...
Page 146: ...3 2 PIM DO NOT USE FOR FLIGHT OPERATIONS ...
Page 150: ...3 3 PIM DO NOT USE FOR FLIGHT OPERATIONS ...
Page 164: ...3 4 PIM DO NOT USE FOR FLIGHT OPERATIONS ...
Page 170: ...3 5 PIM DO NOT USE FOR FLIGHT OPERATIONS ...
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