7.11 - Emergency Oxygen System
See
.
The gaseous oxygen system is to be used by the crew and the passengers when
the cabin altitude is greater than 10,000 ft following a loss of pressurization, or if
there is smoke or fumes in the cabin.
USE OXYGEN MASK
is displayed in the CAS window and the
"Use oxygen
mask / Use oxygen mask"
voice alert sounds when the cabin altitude is greater
than 10,000 ft.
The oxygen reserve is contained in an oxygen cylinder made of composite
material and located outside of the pressurized cabin, in a compartment in the
right wing's fairing. Its capacity is 50.3 cu.ft (1,425 liters) STPD and the use limit
pressures are:
-
maximum pressure 1,850 PSIG (127 bars) at 70 °F (21 °C). The maximum
pressure for different outside temperatures is provided in
, as
well as on a placard on the inside of the cylinder service door,
-
minimum pressure 217 PSIG (15 bars).
CAUTION
If the oxygen cylinder pressure falls below the minimum, the cylinder must be
purged before refilling.
If this occurs, inform the maintenance department.
The oxygen cylinder head is equipped with:
-
a hand-controlled isolation valve to permit cylinder installation and removal,
-
a microswitch that triggers
O2 CYL CLOSED
. This message is ON when
the isolation valve is closed,
-
a graduated pressure gauge,
-
a charging valve; refer to the replenishment procedure in
,
-
an overpressure system consisting of a safety disc. This disc is designed to
rupture between 2,500 and 2,775 PSIG (172 and 191 bars) discharging the
cylinder contents overboard,
-
a pressure-reduction valve that regulates oxygen pressure to the oxygen
masks at between 64 and 85 PSIG (4.4 and 5.9 bars),
-
a low-pressure safety valve calibrated to 116 PSIG (8 bars).
A control panel located in the cockpit's overhead panel includes:
Section 7
Description
Pilot's Information Manual
PIM TBM 960 - Edition 0
Rev. 00
Page 7.11.1
PIM - DO NOT USE FOR FLIGHT OPERATIONS