SIA421 was operating from VABB to WSSS (Singapore Changi Airport / Changi Air Base (West)) on 2026-07-19. SkyMeter detected a diversion to Hang Nadim International Airport (WIDD) on runway 22 at 12:55 UTC. Peak cruise altitude FL374, turnaround area near North 24 Parganas, IN. METAR at the time reported 0 kt wind, 9,994 m visibility. Detection algorithm and known limitations: see SkyMeter methodology.
Pilot review data
- Runway 22
- 0 ft AGL at event
- 0 kt ground speed
- 0 fpm vertical
- 0 kt wind
- 0 kt crosswind component
- 9,994 m visibility
- WIDD 282330Z 18003KT 9999 FEW014 28/25 Q1009 NOSIG
Flight context
- SIA421
- B78X
- VABB → WIDD
- 2026-07-19 12:55 UTC
- WIDD runway 22
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