Unstable approach — ACA177

CYEG · 12

2026-07-18 05:32 UTC· CYYZ → CYEG· AIR CANADA· A321

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ACA177 (AIR Canada) was operating from CYYZ to CYEG on 2026-07-18. SkyMeter detected a low approach-stability score at Edmonton International Airport (CYEG) on runway 12 at 05:32 UTC. Trace data at the event: 3436 ft AGL, 168 kt GS. Approach stability score: 37/100. Scores below 50 occur on under 10% of approaches at this runway and indicate the v2 scorer flagged the approach as highly anomalous (three or more gates exceeded the runway's P90 envelope simultaneously). METAR at the time reported 10 kt wind, 3 kt crosswind component, 32,187 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)
  • SECURITY6/4348 2026-03-08 07:00Z – 2026-11-01 06:59Z SFC–2,400 ft

    GRAND FORKS AFB, ND, Sunday, March 8, 2026 through Sunday, November 1, 2026 Local

    View FAA NOTAM →
  • HAZARDS6/6435 2026-07-17 13:56Z – 2026-07-18 02:00Z SFC–3,200 ft

    16 NM NE GRAND MARAIS, MN, Friday, July 17, 2026 through Saturday, July 18, 2026 UTC

    View FAA NOTAM →
  • SECURITY6/5882 2026-07-17 16:30Z – 2026-07-20 04:00Z SFC–400 ft

    MINNEAPOLIS, MN, Friday, July 17, 2026 through Sunday, July 19, 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 12
  • 3436 ft AGL at event
  • 168 kt ground speed
  • 0 fpm vertical
  • Approach stability 37/100
  • 10 kt wind
  • 3 kt crosswind component
  • 32,187 m visibility
  • CYEG 151800Z 18008KT 150V230 20SM BKN032 19/11 A3019 RMK CU7 SLP233 DENSITY ALT 3100FT

Flight context

  • ACA177
  • AIR Canada
  • A321
  • CYYZ → CYEG
  • 2026-07-18 05:32 UTC
  • CYEG runway 12

All events on this flight

Unstable approach 05:32:50 UTC · CYEG runway 12 · 3,436 ft AGL · 168 kt GS
Unstable approach 05:32:50 UTC · CYEG runway 12 · 3,436 ft AGL · 168 kt GS
Unstable approach 05:32:50 UTC · CYEG runway 12 · 3,436 ft AGL · 168 kt GS
Unstable approach 05:32:50 UTC · CYEG runway 12 · 3,436 ft AGL · 168 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· CYEG