TRIMMABLE HORIZONTAL STABILIZER Flashcards Preview

Spirit Oral Study Guide > TRIMMABLE HORIZONTAL STABILIZER > Flashcards

Flashcards in TRIMMABLE HORIZONTAL STABILIZER Deck (4):
1

How is the THS normally operated in flight?

The flight control computers control trim functions automatically

2

If NO hydraulic power is available can the THS be positioned?

No. The THS requires hydraulic power from at least one of the Green or Yellow systems

3

If a complete flight control computer failure occurs can the THS be positioned?

Yes, mechanical trimming is possible by manually positioning the Pitch Trim Wheel

4

What happens to the THS after landing?

The trim automatically resets to zero if pitch attitude is < 2.5° in < 5 seconds