FLOW pb (NORM/HI)
Norm: 22 psi
High: 30 psi
L and R packs
L: flight deck + cabin
R: cabin only
(one pack INOP –> mixing chamber)
Ground Turbo Fans
ON when:
*in case of ENG OIL LO PR: turbo fan starts on the opposite side when ≤ 150 kts, regardless of L/G position
Conditioned air enters the cabin via
OUTLET RAMPS (under the OVHD bins)
Avionics compartment ventilation is achieved by
extracting heated air to limit internal operating temperature
EXTRACT AIR FAN
extracts air from the FLT DCK and EE racks at diff. speeds, based on cockpit temp.
Rotational speed:
MIN when cockpit temp. = 20 °C
MAX when cockpit temp. > 52 °C
FWD SMK
can be contained by closing the EXTRACT AIR FLOW VALVE
PACK OVHT PROT
OVHT CAUTION: duct temp. > 92 °C
PACK VALVE closes auto. when air downstream of the PACK COMPR >204 °C
TEMP CONTROL VALVE: progressively closes if the duct temp. downstream of the MIXING CHAMBER > 88 °C
RECIRC FAN 1(2) pb + when does the FAULT LT come on
ON: recirculation of a part of the cabin air to supplement AIR COND is provided. FAN ROT SPD varies linearly from LO to HI speed depending on the position of the TEMP CONTROL VALVE. HI SPD auto. sel. if the temp. measured at cabin floor level < 13 °C
OFF: all the air is supplied by the packs without recirculation.
FAULT LT ON: FAN ROT SPD < 900 rpm or the fan’s elec. motor OVHT
EXHAUST MODE pb
NORM (GND/IN FLT)
OVBD:
-extract fan stops
-OVBD valve partially opens (IN FLT ONLY)
-U/F valve closes (cabin underfloor ventilation valve)
-OVBD LT ON
Pressurization LDG ELEV indicator
-1500 to 10’000 ft
indicate blanks when AUTO MODE FAIL or the system is in MAN/DUMP mode
MAN PRESS CONTROL
-Electropneumatic outflow valve: closed
-Pneumatic outflow valve: operated via the MAN RATE KNOB (-1500 to +2500 fpm)
DUMP FUNCTION
Only available in auto mode.
Fully depressurizes the aircraft
CAB PR. IND.
-Alt ind.
-Rate ind.
-Diff. ind. (DeltaPr Cabin/A/C static pr.)(-1 to 8 psi) OFF Flag appears in the RH corner if a loss of ELEC PWR occurs
the AFCS consists of
-AFCS computer
-Control panel
-ADU
-3 servo actuators (yaw, pitch, roll)
AFCS inputs
-ADCs
-AHRS
-SGU
-RA
-GPS
-Other sensors
BANK (AFCS button)
HI 27° (default)
LO 15°
ADU
Advisories
Caution
Armed mode
Captured mode
GA pb
GA mode: AP OFF + FD HDG HLD + predetermined safe pitch attitude
EADI FMA
Top L: ARM/ACT lateral modes
Top R ARM/ACT vertical modes
*= mode capture in progress
Mode change: 5s white box after the arm mode has been captured
TCS
tempo. manual control while AP ON
AP arrows ext. when ON
-in basic AP MODE: AP change PITCH and ROLL ref. New ref = new pitch + new roll
-during IAS or VS mode: generates dashed IAS/VS messages on the ADU
Pitch attitude limits: +- 15° (if released with > 15°, AP returns to 15°
Bank angle limits:
-if TCS is released at a bank angle of < 6°: AP levels wings
-if > 6° but < 35 °: AP maintains bank angle
-if > 35° AP returns to and keeps 35°
ALT ALERT
-C chord sound when within 1000 ft of sel. alt.
-any alt. dev. > 250ft triggers an alert
-visual alerts ext. when > 1000 ft of presel. alt
AP AUTO DISENG. conditions
-Stall warning
-AHRS dis.
-ADC dis.
-PITCH TRIM ASYM
-AP/YD conditions no longer valid
AP must be disconnected if the following adv. appear on the ADU
-AILERON MISTRIM
-PITCH TRIM FAIL
-PITCH MISTRIM