Lights

Question 1

Which lights have a memo when switched off in flight.

Answer 1

The aircraft is in flight, and the BEACON or STROBE sw is set to OFF.

Question 2

Power Source of Cabin Emergency Lights?

Answer 2

All cabin emergency lights (except the emergency slide lights) have an independent power supply:
The Emergency Power Supply Units (EPSUs).
A battery pack supplies the emergency slide lights

Question 3

How many EPSU?

Answer 3

There are 8 Emergency Power Supply Units (EPSUs): One for each door

Question 4

How long do EPSUs maintain power if aircraft supply not available?

Answer 4

The internal battery pack of the EPSU automatically takes over the power supply of the cabin emergency lights for at least 10 min

Question 5

Emergency Exit lights in ARM position.

Answer 5

The cabin emergency lights (except the emergency slide lights) are on if the aircraft is no more electrically powered