PA.VIII.D.K1cFAA-S-ACS-6C · Nov 2023Knowledge
c. Function and operation
Flight instruments as they relate to: c. Function and operation
Bottom line
Performance is determined by reference to the altimeter, airspeed or vertical speed indicator (VSI), heading indicator, and turn-and-slip indicator. The attitude indicator gives a direct and immediate indication of the pitch attitude of the aircraft.
Key numbers
| Number | What it means |
|---|---|
| three categories: performance, control, and navigation, for analog or digital (glass) instruments | Instrument categories |
| one bar width off center equals one ball width displacement | Slip/skid bar |
| tick marks left and right of the lubber line denote standard-rate versus half standard-rate | Turn rate ticks |
FAA references
- PHAK ch. 3 (p. 3-12) — FAA-H-8083-25C (2023)
- IFH ch. 6 (pp. 6-4–6-5) — FAA-H-8083-15B
- PHAK ch. 8 (p. 8-13) — FAA-H-8083-25C (2023)
- RMH Glossary — FAA-H-8083-2A
- AFH ch. 18 (p. 18-15) — FAA-H-8083-3C
- AFH Glossary (p. G-16) — FAA-H-8083-3C
- AFH ch. 13 (p. 13-8) — FAA-H-8083-3C
Build understanding you can use
Unlock the full lesson and continue studying this element.
- Full teaching sections: What it is; Key points; Rules and numbers; How it is done
- Check your understanding with answers you can reveal
- Common mistakes paired with the FAA facts that correct them