37 Vacuum Flashcards
1
Q
What does the vacuum system supply?
A
Regulated vacuum to aircraft flight instruments.
2
Q
Main components of the vac system?
A
instrument air filter, vacuum reg and integrated filter
3
Q
Explain the vacuum system operation.
A
Vacuum is derived from the bleed air driven ejector pump, the ejector provides pressusisation control via the vacuum system regulated at 4.3 to 5.9 inches of hg through a reg valve located in the nose compartment.
4
Q
Where is your instrument air filter located?
A
nose compartment.
5
Q
What should be done to the vacuum filter regulator valve if the system exceeds 6.4 inches hg?
A
clean the filter and recheck vacuum to adjust, run engines at 70 to 80%. in to increase out to decrease.
