Diversion — UAL636
KRFD · 072026-01-30 22:16 UTC· KHDN → KRFD· UMB BANK NA TRUSTEE· B38M
UAL636 (UMB Bank NA) was operating from KHDN to KORD (Chicago O'Hare International Airport) on 2026-01-30. SkyMeter detected a diversion to Chicago Rockford International Airport (KRFD) on runway 07 at 22:16 UTC. Peak cruise altitude FL371, turnaround area near Merrick, US. Approach stability score: 39/100. 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 12 kt wind, 12 kt crosswind component, 16,093 m visibility. Detection algorithm and known limitations: see SkyMeter methodology.
Pilot review data
- Runway 07
- 735 ft AGL at event
- 120 kt ground speed
- 0 fpm vertical
- Approach stability 39/100
- 12 kt wind
- 12 kt crosswind component
- 16,093 m visibility
- KRFD 092354Z 10004KT 10SM FEW060 BKN110 18/13 A3004 RMK AO2 SLP173 60003 T01830133 10200 20156 55012 $
Flight context
- UAL636
- UMB Bank NA
- B38M
- KHDN → KRFD
- 2026-01-30 22:16 UTC
- KRFD runway 07
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