| Date: | Sunday 22 March 2026 |
| Time: | 23:37 |
| Type: |  Bombardier CRJ-900LR |
| Owner/operator: | Air Canada Express, opb Jazz |
| Registration: | C-GNJZ |
| MSN: | 15052 |
| Year of manufacture: | 2005 |
| Engine model: | GE CF34-8C5 |
| Fatalities: | Fatalities: 2 / Occupants: 76 |
| Other fatalities: | 0 |
| Aircraft damage: | Destroyed |
| Category: | Accident |
| Location: | New York-La Guardia Airport, NY (LGA/KLGA) -  United States of America |
| Phase: | Landing |
| Nature: | Passenger - Scheduled |
| Departure airport: | Montreal-Pierre Elliott Trudeau International Airport, QC (YUL/CYUL) |
| Destination airport: | New York-La Guardia Airport, NY (LGA/KLGA) |
| Investigating agency: | NTSB |
| Confidence Rating: |  Information is only available from news, social media or unofficial sources |
Narrative:
Air Canada Express flight AC8646, a CRJ-900, from Montreal collided with a fire truck on runway 4 at LaGuardia Airport during landing.
The pilot and copilot were killed and 39 passengers of the airplane and 2 occupants of the fire truck were injured.
The fire truck, which was crossing the runway at Taxiway D to get to United 2384, a Boeing 737 MAX 8 that reported a sickening odor following two aborted takeoffs from runway 13. The controller at the time, working both ground and tower, cleared the truck to cross runway 04, but then told the truck to stop multiple times as the CRJ was on short final.
ADS-B data show a ground speed of the CRJ-900 at Taxiway D of 114 knots (211 km/h).
METAR:
METAR KLGA 230351Z 05007KT 4SM -RA BR FEW045 BKN090 OVC110 08/08 A2970 RMK AO2 SLP058 P0007 T00830078 $
METAR KLGA 230251Z 06007KT 7SM -RA SCT060 OVC095 09/08 A2973 RMK AO2 SLP067 P0003 60007 T00940078 50022 $
