Dash 8 Systems Flashcards
The main purpose of the fuel collector bay is:
to maintain a constant supply of fuel at all times to the engine-driven fuel pump regardless of airplane altitude
when the fuel in either collector bay drops below ____lbs, the TANK FUEL LOW Caution Light illuminates indicating there is ____ mins of fuel in the collector bay.
130lbs
10 min
prior to establishing electrical power or in the event of a power failure, the fuel quantity indicators will read ____.
zero
if the main pump inlet boost pressure drops below ____ PSI, the _____ caution light illuminates to indicate head pressure to the engine driven pump is low.
5.5 PSI
ENG FUEL PRESS caution light
*Try turning on the auxiliary boost pump to get the caution light to go out
what is the purpose of the tank auxiliary pump?
serves as a backup source of fuel boost pressure to the main pump
must be on for takeoff and landing
a FUEL FLTR BYPASS light indicates:
fuel may be bypassing the engine.
typically illuminates when there is fuel contamination
fuel transfer occurs at about ____ lbs/min?
50
takeoff with the fuel heater outlet temperature indication below ____C and above ____C is prohibited
below 11C
above 57C
what is contained in the nose compartment?
nose landing gear emergency landing gear reservoir crew O2 bottle main and aux batteries TRUs DC contractor relay box taxi light
what is the overhead bin weight limits
60 lb limit
20 lb above 1C
what does the right forward bulkhead contain?
1 first aid O2 bottle and mask 2 pax O2 bottles and masks first aid kit fire extinguisher shelf for AED and med kit
weight limits of both bag compartments
lower level: 2000lb at 125lbs/ft2
upper level: 1000lb at 75lbs/ft2
where are the baggage compartment smoke alarms located?
one above the passenger bulkhead
one in the ceiling
tail strikes can occur when pitch attitude exceeds ____ degrees while operating on or near the ground
8 degrees
max alternate gear extension speed
140kts
speed is limited because all wheel well doors remian open after the gear is fully down
max operating altitude
25000ft
mas operating altitude for takeoff and landing
10000ft
max runway slopes approved for takeoff and landing are?
+2% uphill
-2% downhill
what does the main battery switch do?
located on the DC control panel
when positioned to main BATT, the main battery is connected to the right main feeder bus if the battery master switch is on
what does the power source load display selector switch do?
located on the DC control panel
selects power source (TRU or generator) to be load-monitored on power source load display
battery temperature display scales Ranges: Normal Cautionary Overheat
Located on battery temperature panel
each scale is a row of vertical bar light segments which illuminate in a line from left to right to indicate the temp
normal (green) 15-50C
cautionary (amber) 50-65C
overheat (red) 65-80C
main battery load switch
located on the DC system panel
indicates existing battery charge or discharge rates in terms of decimal fraction of minimum battery rate
generator control switches
located on the DC control panel
when positioned to GEN 1 or GEN 2, the GCU is armed to activate its starter-generator to the generator mode. In off, the generator is shut down, or following shutdown by other manual or automatic means, resets the GCU for subsequent reactivation
auxiliary battery load
located on DC system panel
indicates existing battery charge or discharge rates in terms of decimal fraction of maximum battery rate
external power advisory light (green)
located on AC control panel
illuminates when external power is feeding the variable-frequency AC buses
external power switch
located on AC control panel
when positioned to ext. power, an AC external power source is connected to the variable frequency AC buses and the AC generators are isolated from the buses
battery master switch
located on DC control panel
when positioned to battery master, both batteries are connected to the essential buses
AC generator control switch
located on AC control panel
at Gen 1 or Gen 2 position, the associated GCU is armed to activate its generator when at operational speed. The off position shuts down the generator, or following shutdown by either manual or automatic means, resets the GCU for subsequent reactivation
inverter control switches
located on the AC control panel
3 switches control activation of respective inverter
PRIMARY - energizes the primary inverters to power the left 115-VAC, 400Hz bus
AUXILIARY - when positioned to L or R, energizes the auxiliary inverter and applies it to the left or right 115-VAC, 400Hz bus
SECONDARY - when positioned to secondary, energizes the secondary inverter to power the right 115-VAC 400 Hz bus
Inverter voltage display
located on AC system panel
display voltage output of selected inverter
inverter load display
located on AC system panel displays load (current) on selected inverter as a decimal fraction of its maximum load capacity
inverter selector
located on AC system panel
selects the inverter to be monitored
AC monitor system test button
located on AC system panel
when pressed and held, all volts and load display segments illuminate for 2 seconds followed by a calibration test
variable frequency load display
located on AC system panel displays load (current) at any one phase of either AC generators output selected on phase selector as a decimal fraction of maximum load capacity
variable - frequency voltage display
located on AC system panel
displays voltage at any one phase of either AC generators output as selected on phase monitored selector
variable - frequency phase selector
located on AC system panel
selects any one of the 6 variable - frequency AC phases to be monitored
where are all light-related circuit breakers located?
on the 3 bottom rows of the circuit breaker panels
what switches are located on the flight attendant light control panel?
baggage compt. cabin overhead cabin sidewall airstair door wardrobe buffet overhead lavatory P.S.U test emergency lighting
what is the most important light switch on the flight deck?
dome switch
powered by hot battery bus
flat switch for easy ID
what are the O2 mask regulator settings?
- Normal: O2 flows ONLY when user inhales
- Emergency: O2 flows continuously
- Dilute: mixes ambient air with incoming O2 (ideal only for extended use)
- 100%: O2 is released in mask
where are the PBEs located?
- Cockpit aft bulkhead
- cabin supply closet
- cabin aft wall
where are the D cell flashlights located?
two are located on the aft wall of the flight deck
one under the FA’s jumpseat
Auxiliary battery switch
located on DC control panel
when positioned to AUX BATT, the left main feeder bus charging circuit is connected to the auxiliary battery if the master switch is on
External power switch
located on DC control panel
when positioned to ext. power, a DC power source is connected to the left and right main feeder buses. At the same time, the batteries are disconnected from the buses
Main bus tie switch
located on DC control panel
lever-locked to OFF, when positioned to main bus tie, the left and right feeder buses are manually tied. The BBPU inhibits bus-tie operation on detection of a bus fault
Bus fault reset switch
located on DC control panel
when momentarily positioned to bust fault reset, the BBPU control over bus isolation following a bus fault is released and the BBPU is rearmed
bus voltage display selector switch
located on DC system panel selects bus (essential, main or secondary) to be voltage-monitored on voltage display
DC monitor system test button
located on DC system panel
when pressed and held, all volts and load display segments illuminate for 2 seconds, followed by a calibration test
volts display 30.5
load display 1.05%
bus voltage display
located on DC system panel
luminous digital indicator displays voltage of bus selected on bus voltage display selector switch
battery load displays
located on DC system panel
luminous digital indicators for each batteries display charge/discharge rates as a decimal fraction of maximum rate capacity.
Discharging is indicated by flashing minus sign
Charging at a rate greater than 1 is indicated by a flashing plus sign.
Power source load display
located on DC system panel
luminous digital indicator displays load (current) demand on selected power source (TRU or generator) as a decimal fraction of its max rated load capacity
MAIN BAT HOT
AUT BAT HOT
warning lights
illuminate to indicate that the temperature of related battery has exceeded 65C
MAIN Battery overheat sensor fail light
located on battery temperature panel
illuminates to indicate failure of main battery overheat sensor
Battery monitor test switch
located on battery temperature panel
3 position switch:
*Pressing in simulates a 70C temp in both batteries causing the main and aux scales to show 70C and illuminating BAT HOT caution lights
*pushing left simulates shorted circuits on all sensors causing sensor fail lights to illuminate and single light segment at the 60 degree point on both scales to illuminate
*pushing right simulates open circuits on all sensors, giving same indication as above
Auxiliary battery overheat sensor fail light
located on battery temperature panel
illuminates to indicate failure of auxiliary battery overheat sensor
External power advisory light
Located on DC control panel
illuminates when external power is feeding the DC busses
PCU
propeller control unit
ECU
Electronic Control Unit
HMU
Hydromechanical Unit
Enrichment solenoid
provides a fixed amount of enriched fuel to the engine.
The #1 and #2 ENG MANUAL lights indicate the enrichment solenoid is providing enriched fuel to the engine
