Chapter 7 - Magnetic Heading Reference System Flashcards
1
Q
What are the reasons for carrying out a compass swing?
A
- Serviceability of the compass system is suspect
- Periodically as laid down by the maintenance schedule
- When a new aircraft is received from the manufacturer
- For the issue of a CofA
- When certain components of the compass system are replaced
- After repair or modification that could affect the compass system
- If the aircraft is moved permanently to a new airfield, involving a large change in latitude
- Following a lightning strike
- After standing on the same heading for more than one year
2
Q
What determines a class 1 compass base?
A
Maximum permissible deviation is ±0.1°
3
Q
What determines a class 2 compass base?
A
Maximum permissible deviation is ±0.25°
4
Q
Where are the full details of compass base requirements laid out?
A
CAP 562
5
Q
What are the three main parts of a compass swing?
A
- Correcting swing
- Calibration swing
- Complete documentation
6
Q
What is the correcting swing measured against?
A
The compass’ cardinal points
7
Q
What headings are used for a calibration swing?
A
Every 45°
8
Q
What allows the pilot to navigate accurately?
A
Compass correction card
