Ice and Rain Protection Flashcards
when would an engine bleed valve fail and does it fail open or closed
it fails open if either electrical or pressure signals are not present
What is included in the ice and rain protection system
- Wing anti-ice system.
- Engine anti-ice system.
- Windshield heating system.
- Air Data Smart Probe (ADSP)/TAT heating system.
- Windshield wiper system
If one bleed air source fails, how is the crossbleed valve opened
automatically
what happens when the ice detectors detect an icing condition
the ice detectors command the wing and engine anti-ice valves to open and remain activated for 5 minutes after the icing condition is no longer detected.
how long will the anti-ice system be commanded open after an icing condition is detected
5 minutes
what happens if one of the ice detectors fails
system redundancy is lost however the remaining detector will allow for normal system operation
what is required for the windshield heating system to operate normally
2 AC power sources
If only one AC power source is available in flight, what happens to the windshield heating system
Only the left windshield heat is powered. If the left windshield heating system fails, the right windshield heat will operate
How many Air Data Smart Probes and TAT probes are installed on the nose
4 ADSP and 2 TAT probes
how are the ADSP and TAT probes heated
Electrically, automatically, when an engine is running or while airborne.
which ADSP will be heated if in manual mode and the batteries are the only power source
ADSP 3
when does the anti-ice system test itself
10 min after takeoff or at 10000 ft AGL, whichever occurs first.
how long is the SAI-IBIT test
60 seconds (maximum). The test can be finished earlier if all slat temperature sensors have an increase of 10°F
what is the standard windshield warm up while on the ground and when
When one AC power source is available, each windshield heat system does a BIT test and warms its windshield for 120 secs
