Oral Bank - HYDRAULICS Flashcards
What does the hydraulic system (SYS FAULT) flight light indicate?
- Low system pressure
- Low reservoir quantity
- Excessive high fluid temp
What does a hydraulic demand pump low PRESS light indicate? (2)
- Demand pump selector OFF or AUX
- Output pressure is low
When will the demand pumps operate when pump selector is in AUTO? (2)
- Engine pump output pressure low, OR fuel control switch CUTOFF
- Demand pumps 1 & 4 when Trailing edge flaps in transit on ground, OR when flaps extend past 1 in flight
On GE-400, which demand pumps are air driven and which are electric?
- 1 and 4 air driven
- 2 and 3 electric
On N480MC/N445/446MC which demand pump pumps are air driven and which are electric?
All 4 air driven, no electric
What does a magenta “RF” displayed next to a hydraulic quantity indicator on the Secondary EICAS mean?
Reservoir requires refill (only displayed on ground)
What’s is the purpose of the AUX pump
Used for ground handling operations
When is the engine driven hydraulic pump pressurised? (2)
- Engine is running
- Engine pump switch ON
What does a hydraulic reservoir quantity indication of 0.95 mean, as displayed on the Secondary EICAS?
Percentage of normal service level (1.00)
What degraded or inoperable systems can you expect from loss of hydraulic system 1?
- Nose and body gear steering INOP
- Center A/P INOP
- Left outboard elevator INOP
- Inboard trailing edge flap hydraulic operation INOP
- Nose and body gear hydraulic extension and retraction INOP
- System 1 alternate brake source INOP
What degraded or inoperable systems can you expect from loss of hydraulic system 4? (6)
- Autobrake INOP
- Right outboard elevator INOP
- Outboard trailing edge flap hydraulic operation INOP
- Two inboard spoiler panels on each wing INOP
- Wing gear hydraulic extension and retraction INOP
- System 4 normal brake source INOP
