Unstable approach — N473VL
KO88 · 152026-09-02 17:36 UTC· KCCR → KCCR· AIRPLANE FACTORY INC· SLG4
N473VL (Airplane Factory) was operating from KCCR to KCCR on 2026-09-02. SkyMeter detected a low approach-stability score at Rio Vista Municipal Airport (KO88) on runway 15 at 17:36 UTC. Trace data at the event: 623 ft AGL, 65 kt GS. Approach stability score: 70/100. Scores in this band are observed on roughly 25% of approaches at this runway: one or more gates outside the per-runway tightest envelope, but still inside the typical operating range. METAR at the time reported 5 kt wind, 4 kt crosswind component. 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)- SECURITY6/6491 2026-07-20 07:01Z – 2026-09-16 06:59Z SFC–1,499 ft
Concord, CA, Monday, July 20, 2026 through Tuesday, September 15, 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 15
- 623 ft AGL at event
- 65 kt ground speed
- 0 fpm vertical
- Approach stability 70/100
- 5 kt wind
- 4 kt crosswind component
Flight context
- N473VL
- Airplane Factory
- SLG4
- KCCR → KCCR
- 2026-09-02 17:36 UTC
- KO88 runway 15
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