Chapter 6.110 - Flight Management, Navigation Flashcards
1
Q
What does the IRS transfer switch control?
What is a limit with this switch out of NORMAL?
A
IRS selection
No CAT II/III approaches
2
Q
What is the primary and backup power source for the L IRS?
R IRS?
A
- Primary - AC standby bus
- Secondary - Switched hot battery bus
- Primary - AC transfer bus 2
- Secondary - Switched hot battery bus
3
Q
What causes the IRS ALIGN lights to flash?
A
- Significant difference between previous and entered positions ie; KORD when at KDEN
- Unreasonable present position ie; 95N, 185W
- No present position entry
4
Q
What does the amber DC FAIL light indicate?
A
- That individual IRS isn’t able to go to it’s backup power source (switched hot battery bus)
- If both DC FAIL lights are illuminated there could be something wrong with the battery charger and you will lose hot battery bus and fire protection, LAND!
5
Q
When will the amber ON DC light illuminate?
A
- The related IRS is operating on DC power from switched hot battery bus
- On momentarily during self-test when selector is moved out of OFF position
