Test 3 Flashcards
What engine is used on Delta’s A220-100s? A220-300s?
PW1521GA
PW1524G-3
In what order should the cowls be opened?
Fan cowls then thrust reversers
In what order should the thrust reverser latches be released?
BLS, 5, 4, 3, 2, 1
What is the primary safety concern prior to opening thrust reversers?
The slats will contact the inboard thrust reverser if lowered while I/B TR is raised.
The coating on one of the fan blades has eroded.
Can the aircraft be dispatched?
Yes. In most cases, the blade can be placed on monitor for 83 days.
What does the fan drive gear system do for the PW1500 engines?
Reduces the speed of the fan to 1/3 of N1
What indication is the primary thrust reference?
N1 speed
What provides power to the EEC?
PMAG when engines are running. (N2 > 45%)
Aircraft Power with engines off. (N2 < 45%)
What unit connects to the EEC and stores thrust rating and fan trim data?
Data Storage Unit
What component provides monitoring of vibes,
2.5 temp and pressure, oil debris, and fan drive gear system oil?
The Prognostic and Health
Monitoring Unit (PHMU)
What is the servicing window for engine oil?
5-60 minutes.
The engine must be run at idle for 5 minutes if outside the window.
Where can we check oil quantity?
Status synoptic page and tank sight gauge.
Engine Bleed air is supplied from what stages?
4th and 8th
What component controls which stage is supplying bleed air?
HPV
What prevents 8th stage air from back-flowing into stage 4?
Intermediate Pressure Check Valve (IPCKV)
What are the major components of BALODS?
Shrouded Ducts, Manifolds, Dual Loops
How is BALODS selected in the flight deck?
No controls, always active
The 3 ECS Subsystems are:
Air conditioning
Avionics cooling
Cabin pressure control
High-Flow Mode gives pilots the ability to:
Remove smoke from the cabin
The ISACs monitor what sensors for flow control?
Pack outlet temperature is adjusted to provide…
The pack temperature control valve is also known as…
Flow control valve
L/R PACK OVHT will result with what = exceedances?
Compressor discharge temperature
Pack discharge temperature
What prevents the throttle levers from being moved to full reverse thrust until the thrust reverser sleeves have fully deployed?
The Baulk Solenoids
What does a N1 amber “rev”
indication represent?
Thrust reverser system fault
What stages supply engine bleed air?
4th and 8th of HPC
What is the controlling
LRU for bleed air?
IASCs 1 & 2
What will an IASC do in response to a failure of the active channel?
It will automatically switch to the healthy channel
What will prevent the higher pressure 8th stage air from flowing into stage 4 of the HPC?
The Intermediate
Pressure Check Valve
(IPCKV)
The Left Bleed FAIL annunciation on the overhead Air Panel will be accompanied by what CAS message?
L Bleed Fail
What is the system that monitors for bleed leak and overheat? What are its major components?
BALODS:
• Dual loops
• Shrouds
• Manifolds
• Coupling cover manifolds
What are the 3 main subsystems of the Environmental Control
System (ECS)?
• Air Conditioning
• Avionics Cooling & Extraction
• Cabin Pressurization
What is the ECS provision for pilots to clear the cabin of smoke or odors?
Pack Hi Flow
How many outlet ducts come off the mix manifold?
Where do they go?
4 Outlets:
• Gaspers
• Flight Deck
• Fwd Cabin
• Aft Cabin
