KV ERJ Hydraulic Panel (9) Flashcards
How do you initiate a hydraulic PBIT?
The hydraulic PBIT is initiated by pressurizing all 3 hydraulic systems.
(AOM V1 3-05.3)(SOPM 4-1.13)
List the ways a hydraulic PBIT can be interrupted?
The hydraulic PBIT is interrupted by moving any flight control surface.
(AOM V1 3-05.3)(SOPM 4-1.12)
What temperature will inhibit the hydraulic PBIT? Why?
1) Hydraulic reservoir temperature greater than +10°C (50°F) or the hydraulic PBIT may be inhibited.
2) This inhibition is removed if the hydraulic PBIT is expired.
(SOPM 4-1.12)(AOM V2 14-08-10.8) The
3) temperature inhibition is in place due to increased hydraulic fluid viscosity observed at lower temperatures which has the potential to damage flight control components.
When is a hydraulic warm up test required?
-18°C (0°F) - Hydraulic Systems Warm-Up must be accomplished before starting the engines
(SOPM 4-1.14)
What is the purpose of the PTU?
The PTU assists in landing gear retraction or extension, should a right engine 2 or right EDP 2 failure occur.
(AOM V2 14-11-10.5)
What is the EICAS message associated with a hydraulic PBIT?
1) FLT CTRL TEST IN PROG status message is displayed while hydraulic PBIT is in progress. (AOM V1 3-05.3)
2) > 50 hours - FLT CTRL BIT EXPIRED message
(SOPM 4-1.12) This message is inhibited while airborne.
When will the engine driven hydraulic pump shutoff valves automatically close?
125°C, fluid temp - the shutoff valve will automatically actuate, thus isolating the EDP 1(2) from the respective hydraulic flow line. (AOM V2 14-11-10.1)
How is normal hydraulic pressure, temperature and quantity determined during the Originating Checklist?
1) Hydraulic Synoptic Page on the MFD
2) and turning on HYDRAULIC SYS 1, 2, and 3A ON.
(SOPM 4-1.35)
When must a hydraulic PBIT be completed without interruption?
+ 50 hours since last successful PBIT - Hydraulic PBIT must be completed, or if it is believed the PBIT will expire prior to becoming airborne.
