Unstable approach — S421

S421 was operating from KMWH to KSLE on 2026-08-12. SkyMeter detected a low approach-stability score at Salem Municipal Airport/McNary Field (KSLE) on runway 34 at 01:06 UTC. Trace data at the event: 1295 ft AGL, 116 kt GS. METAR at the time reported 10 kt wind, 7 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.

• HAZARDS6/9351 2026-07-27 22:00Z – 2026-08-11 22:00Z SFC–8,000 ft

  4NM S FOSSIL, OR, Monday, July 27, 2026 through Tuesday, August 11, 2026 UTC

  View FAA NOTAM →
• HAZARDS6/0581 2026-07-31 05:30Z – 2026-08-14 04:00Z SFC–10,500 ft

  25NM SW THE DALLES, OR, Friday, July 31, 2026 through Friday, August 14, 2026 UTC

  View FAA NOTAM →
• HAZARDS6/1478 2026-08-04 05:00Z – 2026-08-18 05:00Z SFC–10,500 ft

  25NM SW THE DALLES, OR, Tuesday, August 4, 2026 through Tuesday, August 18, 2026 UTC

  View FAA NOTAM →
• HAZARDS6/1681 2026-08-04 16:00Z – 2026-08-19 05:00Z SFC–10,500 ft

  25NM SW THE DALLES, OR, Tuesday, August 4, 2026 through Wednesday, August 19, 2026 UTC

  View FAA NOTAM →
• HAZARDS6/2696 2026-08-06 19:30Z – 2026-08-21 03:00Z SFC–9,000 ft

  24NM NE VANCOUVER, WA, Thursday, August 6, 2026 through Friday, August 21, 2026 UTC

  View FAA NOTAM →
• HAZARDS6/2901 2026-08-08 00:45Z – 2026-08-21 05:00Z SFC–10,000 ft

  37NM SE TACOMA, WA, Saturday, August 8, 2026 through Friday, August 21, 2026 UTC

  View FAA NOTAM →
• HAZARDS6/2924 2026-08-08 05:00Z – 2026-08-22 05:00Z SFC–9,000 ft

  24NM NE VANCOUVER, WA, Saturday, August 8, 2026 through Saturday, August 22, 2026 UTC

  View FAA NOTAM →
• HAZARDS6/3168 2026-08-10 06:45Z – 2026-08-25 04:00Z SFC–10,500 ft

  40NM SE PORTLAND, OR, Monday, August 10, 2026 through Tuesday, August 25, 2026 UTC

  View FAA NOTAM →
• HAZARDS6/3608 2026-08-10 23:00Z – 2026-08-25 04:00Z SFC–9,500 ft

  39NM NW JOHN DAY, OR, Monday, August 10, 2026 through Tuesday, August 25, 2026 UTC

  View FAA NOTAM →
• HAZARDS6/3666 2026-08-11 02:00Z – 2026-08-26 05:00Z SFC–10,500 ft

  20NM SW THE DALLES, OR, Tuesday, August 11, 2026 through Wednesday, August 26, 2026 UTC

  View FAA NOTAM →
• HAZARDS6/3763 2026-08-11 15:45Z – 2026-08-26 04:00Z SFC–10,500 ft

  20NM SW THE DALLES, OR, Tuesday, August 11, 2026 through Wednesday, August 26, 2026 UTC

  View FAA NOTAM →
• HAZARDS6/4084 2026-08-12 00:45Z – 2026-08-27 04:00Z SFC–10,500 ft

  40NM SE PORTLAND, OR, Wednesday, August 12, 2026 through Thursday, August 27, 2026 UTC

  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.

All events on this flight

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