systems 3 - Auxiliary system + ESIS Flashcards
The purpose of the APU is to _________.
Provide a pneumatic air source and an electrical power source.
What is the primary function of the ESU?
Automatic starting and continuous operational monitoring.
What is the minimum accumulator pressure, prior to beginning the APU start sequence?
2,800 psi
What should be done if during ground operation at high ambient temperatures the APU OIL HOT caution appears or the OIL HOT capsule illuminates?
The APU should be shut down immediately to prevent damage, and after a 30-minute cooling period, the oil level should be checked
The ESU will shut down the APU for any detected problems except for an _____ caution
The ESU will shut down the APU for any detected problems except for an APU OIL HOT caution
During emergency start override mode, all fault conditions are masked, except for:
overspeed
underspeed
short during start
start fuel
main fuel
max fuel outputs
Emergency override is obtained by cycling the APU start switch at least _____ times within _____ seconds
5 , 5
The DESU will remain in emergency mode for a maximum of _____ minutes, after which time the APU will revert to normal mode.
If the original fault still exists, the APU will _____
2
Shut down
What happens when you pull the APU T Handle?
Arms the directional valve
Sends stop signal to the DESU
Cuts of fuel to the APU
What function does the thermal protection switch provide?
Activates the shut off switch between 90° and 96° C to prevent cabin overheating
What are the three possible heated air sources for the aircraft on the ground?
Bleed air from the engines, APU, or external source.
What would you do to get outside air into the cockpit?
Turn on the vent blower
The Fire Detection System provides fire warning in the cockpit in case of what?
Fire in either engine compartment or the APU compartment.
Describe the fire detectors?
The fire detectors are solid state photoconductive cells that react to infrared radiation.
Upon an impact of 10 g or more, the omni directional impact switch automatically fires both containers releasing fire extinguishing agent into what?
Both engine compartments
If no AC power is available _____ fire ext must be used. Also the No. ____ Engine can not be extinguished without AC power
Reserve
2
What does a broken or missing red thermal discharge safety port indicate?
What does a broken or missing red thermal discharge safety port indicate?
When AC power is not available, fire fighting capability is lost on which engine?
2 Engine.
At airspeeds greater than _____ KIAS or during periods of reduced rain intensity the windshield wipers may _____ noticeably. If this occurs, wipers must be parked immediately to avoid wiper motor failure.
120 KIAS
Slow
Once finished with the windshield wipers the switch should be placed into what position to return the wipers to the normal position?
PARK
To prevent damage to the windshield, do not operate the windshield wipers when?
The windshield is dry
What could be used on the windshield to help improve the visibility?
Rain repellent.
The temperature of each windshield anti ice panel is controlled to a heat level of about _____°C
43
How many windshield anti-ice switches are there?
Three. COPILOT, CTR, PILOT.
If the APU is the sole source of power the ______ and ______ can’t be used simultaneously
Windshield anti-ice, Backup pump.
If ice accumulates on the windshield what could happen?
Ice shedding can cause engine FOD
To prevent unintentional discharge of the cargo hook explosive cartridge, the pilot shall call off each procedural step of which test?
The emergency release circuit test
What are the three modes of release?
Normal, Manual, and Emergency
What is the maximum weight that may be suspended from the cargo hook?
9,000 pounds.
Pitot static pressure is sent to what aircraft components?
ADC’s
Pitot heat and anti-ice shall be on during operations in visible moisture with ambient temperature of ________and below?
4°C
The brake wear indicator provides a ______ means of checking the level of wear on the brake pads (pucks)?
Visual
How many Weight on Wheel (WOW) switches are installed on the landing gear?
2, one on each
Do not exceed a touchdown sink rate of ___feet-per-minute on level terrain and ___ feet-per-minute on slopes with gross weights of up to 16,825 pounds; above 16,825 pounds gross weight do not exceed ___feet-per-minute on level terrain and ___ feet-per-minute on slopes?
540, 360, 300, 180
The two external components that provide display information to the ESIS are:
ADC & Magnetometer
The BATTERY STBY INST switch is located where in the cockpit?
Upper Console
A beeping tone can be heard when the the aircraft is on the ground with AC power removed if the BATTERY STBY INST switch is in which position?
ARM
The ESIS battery should supply power to the instrument for at least ______ Min
30
