Unstable approach — N987MP

KSTS · 14

2026-04-27 02:52 UTC· MASQUE PUBLISHING INC· EPIC

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N987MP (Masque Publishing) was inbound to KSTS on 2026-04-27. SkyMeter detected a low approach-stability score at Charles M. Schulz Sonoma County Airport (KSTS) on runway 14 at 02:52 UTC. Trace data at the event: 1224 ft AGL, 113 kt GS. Approach stability score: 56/100. Scores in this band occur on roughly 10-15% of approaches at this runway, with multiple gates outside the per-runway envelope. METAR at the time reported 4 kt wind, 4 kt crosswind component, 16,093 m visibility. The approach-stability score rates the final approach against stabilized-approach gates (glideslope, lateral deviation, descent rate, and IAS) at defined altitudes. A low score means one or more of those were outside the normal envelope for how the approach was flown. The score is graded by guidance type, so instrument approaches (ILS or an aligned straight-in) are held to the full gate set, while visual and pattern arrivals are surfaced only when the score is clearly low. The score is advisory and observational, a deviation measure, not an assertion of an accident. Detection algorithm and known limitations: see SkyMeter methodology.

Active FAA TFR during this flight

Source: FAA TFR archive (hourly snapshot)
  • SECURITY6/3475 2026-03-08 09:00Z – 2026-11-01 09:59Z SFC–180 ft

    BEALE AFB, CA, Sunday, March 8, 2026 through Sunday, November 1, 2026 Local

    View FAA NOTAM →
  • SECURITY6/5797 2026-04-03 00:01Z – 2026-09-28 23:59Z SFC–400 ft

    SACRAMENTO, CA, Thursday, April 2, 2026 through Monday, September 28, 2026 Local

    View FAA NOTAM →

SkyMeter cross-referenced this flight against FAA-published TFRs that were active during its window and within its geographic bounding box. Overlap doesn't necessarily mean violation — the aircraft may have been outside the TFR’s precise polygon or flying under air-traffic-control coordination.

Pilot review data

  • Runway 14
  • 1224 ft AGL at event
  • 113 kt ground speed
  • 0 fpm vertical
  • Approach stability 56/100
  • 4 kt wind
  • 4 kt crosswind component
  • 16,093 m visibility
  • KSTS 152153Z 20007KT 10SM CLR 24/14 A3009 RMK AO2 SLP181 T02390139

Flight context

  • N987MP
  • Masque Publishing
  • EPIC
  • 2026-04-27 02:52 UTC
  • KSTS runway 14

All events on this flight

Unstable approach 02:52:17 UTC · KSTS runway 14 · 1,224 ft AGL · 113 kt GS
Unstable approach 02:52:17 UTC · KSTS runway 14 · 1,224 ft AGL · 113 kt GS
Unstable approach 02:52:17 UTC · KSTS runway 14 · 1,224 ft AGL · 113 kt GS
Unstable approach 02:52:17 UTC · KSTS runway 14 · 1,224 ft AGL · 113 kt GS

Automated analysis. Events shown on this page (such as go-around, unstable approach, or runway events) are heuristic classifications produced by algorithms from publicly broadcast ADS-B data. They are intended to surface flights of interest for further review — they are not findings of fact, and they do not determine pilot fault, regulatory compliance, or the cause of any occurrence. Coverage gaps and sensor noise can affect accuracy. Only the relevant civil aviation authority or accident investigation body can make official determinations. How we detect events · Dispute or correct this data

SkyMeter · trace data observed via ADS-B· KSTS