IR.VI.A.K1FAA-S-ACS-8C · Nov 2023Knowledge
Procedures and limitations associated with a non-precision approach, including the diff...
Procedures and limitations associated with a non-precision approach, including the differences between Localizer Performance (LP) and Lateral Navigation (LNAV) approach guidance.
Bottom line
RNAV approaches without approved vertical guidance and conventional NPAs should be flown, whenever possible, using a CDFA technique.
Key numbers
| Number | What it means |
|---|---|
| approximately 50 ft (15 meters) above the landing runway threshold | CDFA end point |
| level flightpath as low as 250 feet above the ground in IMC | Dive and drive |
| MDA approximately 800 feet above the ground at Northampton | LNAV example |
FAA references
- AC 120-108 ch. 4 List of Tables — AC No: 120-108A
- RMH App. D (p. D-4) — FAA-H-8083-2A
- 14 CFR 91.175 (Takeoff and landing under IFR.) — eCFR current as of 2026-03-05
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