HURIV is a stepdown waypoint for which approach type for the 28J RNAV 27?

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BlackTom AI · Accepted Answer

Question restatement: The problem asks which approach type uses HURIV as a stepdown waypoint for the 28J RNAV 27 at Palatka (28J). Answer options: LNAV, LNAV/VNAV, LPV, CIRCLING.

Option 1 — LNAV: This is a non-precision approach path that uses lateral navigation without vertical guidance. If HURIV is listed as a stepdown waypoint along the final segment of the RNAV (GPS) RWY 27 approach, it typically serves to define a lower altitude constraint along a path that provides only lateral guidance. Since the chart provides a single-stepdown fix rather than a published vertical descent path, LNAV is consistent with a stepdown fix on a non-precision path. This makes LNAV a plausible use for HURIV.

Option 2 — LNAV/VNAV: This option involves lateral navigation with vertical guidance (dap/altitude steps and a vertical descent path). If HURIV were a dedicated stepdown fix for a LNAV/VNAV procedure, you would expect to see a published vertical path or a stated altitude constraint tied to a VNAV descent. On this plate, HURIV is not shown as part of a published VNAV glidepath or vertical descent angle; the vertical guidance is not depicted as coincident with a VNAV path at this fix. Therefore, LNAV/VNAV is unlikely to be the intended role for HURIV.

Option 3 — LPV: This provides a choice with a precision-like glidepath (LPV) with a lateral and vertical path that typically relies on WAAS. LPV procedures usually have a specified glideslope angle and vertical guidance shown on the approach chart or in the minimums/notes section. If HURIV were part of an LPV path, you would expect an explicit reference to a glideslope or LPV segment on the plan view or profile view. The chart’s labeling and the absence of an LPV-specific vertical path around HURIV argue against LPV.

Option 4 — CIRCLING: A circling-only procedure applies when the instrument approach does not provide straight-in minimums for a particular runway and is not a straight-in, offset from final approach. A stepdown waypoint like HURIV on a straight-in RNAV (GPS) RWY 27 procedure would not typically be associated with a circling-only approach path. Therefore, CIRCLING is not a logical use for HURIV in this context.

Summary: Analyzing the role of HURIV on the 28J RNAV RWY 27 approach, the lack of a published vertical guidance path at that fix and the presence of a stepdown function align best with LNAV, which relies on lateral guidance with stepdown fixes on a non-precision path. The other options require vertical guidance or circling considerations that aren’t supported by the chart details around HURIV.

FA_221 Lesson 23 Quiz

HURIV is a stepdown waypoint for which approach type for the 28J RNAV 27?

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