# NTSB DCA27LA013: Bombardier CL-600-2D24, N574NN, St. Louis, MO, October 17, 2026

- Type: NTSB accident investigation
- Classification: Accident · Serious injuries · Class 4 · Limited · Investigation open
- Date: October 17, 2026, 09:40 local (14:40 UTC)
- Place: St. Louis, MO
- Coordinates: 38.750236, -90.373388
- Nearby events: https://openairdocs.org/map.md?lat=38.7502&lon=-90.3734&mi=10
- Phase of flight: [Initial climb](https://openairdocs.org/ntsb-phases/350) (OpenAirDocs' grouping)
- Defining event: [Initial climb: Pressure/environ sys malf/fail](https://openairdocs.org/ntsb-events/331)
- Highest injury: Serious injuries
- Injuries: 1 serious, 2 uninjured
- Status: Investigation ongoing
- Investigation class: Class 4 - Basic report with no Prelim publish
- NTSB office: Major Investigations Division
- Parties: FAA
- NTSB case key (mKey): 204032
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=DCA27LA013
- Latest NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/204032/pdf
- Page: https://openairdocs.org/ntsb/DCA27LA013

## Sequence of events

The events NTSB coded, in order, by phase of flight. The defining event best describes what happened.

- [Initial climb: Pressure/environ sys malf/fail](https://openairdocs.org/ntsb-events/331) (defining event); cases with it: [Bombardier CL-600-2D24, 1 case](https://openairdocs.org/ntsb-events/331/sequence.md?model=1390016), [All aircraft, 116 cases](https://openairdocs.org/ntsb-events/331/sequence.md)
- [Emergency descent: Pressure/environ sys malf/fail](https://openairdocs.org/ntsb-events/331); cases with it: [Bombardier CL-600-2D24, 1 case](https://openairdocs.org/ntsb-events/331/sequence.md?model=1390016), [All aircraft, 116 cases](https://openairdocs.org/ntsb-events/331/sequence.md)
- [Other: Evacuation](https://openairdocs.org/ntsb-events/460); cases with it: [Bombardier CL-600-2D24, 1 case](https://openairdocs.org/ntsb-events/460/sequence.md?model=1390016), [All aircraft, 103 cases](https://openairdocs.org/ntsb-events/460/sequence.md)

## Aircraft

- Registration: [N574NN](https://openairdocs.org/aircraft/N574NN), registered now, S/N 15365, built 2015 (OpenAirDocs)
- Reported make and model: BOMBARDIER INC CL-600-2D24
- Registry model: [Bombardier CL-600-2D24](https://openairdocs.org/model/bombardier-cl-600-2d24) (registry code 1390016) (OpenAirDocs)
- Registry engine: [GE CF34-8C5](https://openairdocs.org/engine/ge-cf34-8c5) (registry code 30050, turbo-fan) (OpenAirDocs)
- Category: Airplane
- Serial number: 15365
- Year built: 2015
- Damage: No damage
- Flight: Part 121
- Operator: PSA Airlines
- Registered owner: American Airlines Inc
- Destination: Philadelphia, PA
- Flight plan: IFR

## Weather

- Conditions: Visual (VMC), Day
- Wind: 30° at 5 knots
- Visibility: 10 statute miles
- Lowest ceiling: none
- Temperature: 48 °F, dew point 37 °F
- Altimeter: 30.57 inHg
- Observed at: KSTL
- METAR: METAR KSTL 171451Z COR 03005KT 10SM CLR 09/03 A3057 RMK AO2 SLP356 T00890033 51015

From the NTSB's public API. Aircraft are matched to registry aircraft by N-number and event date, checked against the reported serial number, make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model.

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