PA.VIII.A.K1cFAA-S-ACS-6C · Nov 2023Knowledge
c. Function and operation
Flight instruments as they relate to: c. Function and operation
Bottom line
Whether an aircraft has analog or digital (glass) instruments, the instrumentation falls into three categories: performance, control, and navigation. The performance instruments indicate the aircraft's actual performance, determined by reference to the altimeter, airspeed or vertical speed indicator, 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 |
|---|---|
| 5 satellites in view, or 4 with baro-aiding, to detect an integrity anomaly | RAIM detect |
| 6 satellites in view, or 5 with baro-aiding, to isolate a corrupt satellite signal | RAIM isolate |
| at least 95 percent of total flight time | RNP accuracy |
FAA references
- PHAK ch. 3 (p. 3-12) — FAA-H-8083-25C (2023)
- IFH ch. 6 (p. 6-4) — FAA-H-8083-15B
- IFH ch. 9 (p. 9-26) — FAA-H-8083-15B
- IFH ch. 9 (p. 9-44) — FAA-H-8083-15B
- AFH ch. 13 (p. 13-8) — FAA-H-8083-3C
- AFH ch. 18 (p. 18-15) — FAA-H-8083-3C
- RMH Glossary — FAA-H-8083-2A
- RMH ch. 7 (p. 7-2) — FAA-H-8083-2A
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