PA.VI.B.S2FAA-S-ACS-6C · Nov 2023Skills
Determine the airplane’s position using the navigation system.
Determine the airplane’s position using the navigation system.
Bottom line
A minimum of four satellites is necessary to establish an accurate three-dimensional position. The GPS receiver verifies the integrity (usability) of the signals received from the GPS constellation through receiver autonomous integrity monitoring (RAIM) to determine if a satellite is providing corrupted information. Without RAIM capability, the pilot has no assurance of the accuracy of the GPS position.
FAA references
- PHAK Glossary (p. G-25) — FAA-H-8083-25C (2023)
- PHAK ch. 16 (p. 16-31) — FAA-H-8083-25C (2023)
- AIM 1-1-13 (User Reports Requested on NAVAID Outages) — AIM Basic 2/20/25 w/ Change 1 (8/7/25) & Change 2 (1/22/26)
- PHAK ch. 16 (p. 16-23) — FAA-H-8083-25C (2023)
- AIM 1-2-4 (Recognizing, Mitigating, and Adapting to GPS Jamming and/or Spoofing) — AIM Basic 2/20/25 w/ Change 1 (8/7/25) & Change 2 (1/22/26)
- PHAK ch. 16 (p. 16-34) — FAA-H-8083-25C (2023)
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