Ice & rain - Fire Protection - Electrical Flashcards
(50 cards)
What is the source of heating for wing and cowl anti-ice?
6th or 10th stage bleed air
When is cowl anti-ice required to be ON during ground operations?
OAT ≤ 10°C
- in visible moisture
(fog with visibility 1 sm or less, rain, snow, sleet, ice crystals), - on contaminated ramps, taxiways or runways
When is cowl anti-ice required to be ON during flight?
TAT ≤ 10°C
- in visible moisture (such as clouds, rain, snow, sleet,
or ice crystals) (except when SAT is ≤ -40°C),
or when ICE is annunciated
When is wing anti-ice required to be ON during ground operations?
OAT ≤ 5°C in visible moisture
(fog with visibility 1sm or less, rain, snow, sleet, ice crystals),
OAT ≤ 5°C on contaminated runways.
If Type II, Type III or Type IV deicing fluid has been applied,
select wing anti-ice ON just prior to thrust increase for takeoff.
When is wing anti-ice required to be ON during flight operations?
TAT ≤ 10° C in visible moisture (such as clouds,
rain, snow, sleet, or ice crystals)
with airspeed < 230 KIAS
except when SAT is ≤ -40° C, or when ICE is annunciated.
What is a good ICE detector test indication?
ICE caution message
ICE switchlight illuminated
ADS HEAT TEST OK advisory message.
What is the purpose of the Wing A/I cross-bleed switch?
To allow the bleed air from one engine to anti-ice
the opposite wing
What occurs with the Windshield Heat on LOW?
All 4 panels are heated to 24°C.
What occurs with the Windshield Heat on HIGH?
Side windows are heated to 24°C and both windshields
are heated to 41°C.
How many fire detection loops are installed on each engine?
Two, dual loops mounted in parallel.
How many firex bottles are available for an engine fire?
Two
What type of Halon is in the engine firex bottles?
Halon 1301 pressurized with dry nitrogen.
How is an engine fire detected by the crew?
Appropriate ENG FIRE PUSH switchlight illuminates,
fire bell sounds, and an EICAS warning message
What occurs when the ENG FIRE PUSH switchlight is pushed?
Fuel SOV closes,
HYD SOV closes,
Bleed air SOVs close,
generator is de-energized
and the appropriate squibs are armed
Can we blow both bottles into one engine, if necessary?
Yes.
How many fire detection loops are inside the APU containment case?
Two, dual loops
mounted in parallel.
How is an in-flight APU fire detected by the crew?
APU FIRE PUSH switchlight illuminates,
fire bell sounds,
APU FIRE warning message on EICAS.
How many firex bottles are available for an APU fire?
One.
What type of extinguishing agent is used in the APU firex bottle?
Halon 1301 pressurized with dry nitrogen.
What occurs during an unattended APU fire on the ground?
APU ECU shuts down the APU.
5 seconds later, the APU bottle will discharge automatically.
What occurs during an APU fire in flight?
The APU ECU shuts down the APU.
The bottle does not discharge automatically, the crew must discharge the bottle.
How many smoke detectors are there in the aft cargo compartment?
Two.
How many smoke detectors are there in the fwd cargo compartment?
Three
What are the flight deck indications of cargo smoke?
Triple chime Master warning flashers, “SMOKE” aural, SMOKE AFT CARGO warning message, or SMOKE FWD CARGO warning message. Either FWD or AFT CARGO SMOKE PUSH switchlights illuminate.
