SECTION 7
DESCRIPTION
TBM
850
PILOT’S OPERATING HANDBOOK
Page 7.12.1
Edition 1 -- June 22, 2007
Rev. 8
7.12 -- VACUUM SYSTEM AND INSTRUMENTS
Pre--MOD70--0335--34 (ESI--2000) (Figure 7.12.1)
The airplane is fitted with a vacuum system providing the suction necessary
to operate the stand--by attitude indicator, the cabin pressurization and the
leading edge deicing.
Vacuum system includes :
-- A pressure regulator
-- An ejector
-- A regulating and relief valve
-- A pressure switch
-- A suction gage indicator
Compressed air necessary for the ejector to create decompressed air is
taken from the powerplant. The air flow is regulated before going into the
ejector which creates necessary vacuum by venturi effect.
A relief valve fixed in cabin to frame C2, maintains the vacuum for
pressurization and instrument systems. In case of pressure drop, a pressure
switch, installed in the system, indicates the failure by causing the ”VACUUM
LOW” CAS message to light on.
STAND--BY ATTITUDE INDICATOR
The stand--by attitude indicator, equipped with a slip indicator, provides a
visual reference of actual airplane flight attitude. An index at the top of the
indicator shows bank attitude relative to the bank scale which has index
marks at 10
°
, 20
°
, 30
°
, 60
°
and 90
°
either side of the center mark.
Pitch and roll attitudes are shown by a miniature airplane superimposed over
a symbolic horizon area divided into two sections by a white horizon bar. The
upper ”sky blue” area and the lower ”ground” area have arbitrary pitch
reference lines useful for pitch attitude control.
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 ...
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