# NTSB OPS26LA019: Learjet 45, N91SU, West Milford, NJ, February 13, 2026

- Type: NTSB incident investigation
- Classification: Incident · Class 4 · Limited · Investigation open
- Date: February 13, 2026, 14:34 local (19:34 UTC)
- Place: West Milford, NJ
- Coordinates: 41.1269, -74.3926 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=41.1269&lon=-74.3926&mi=10
- Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping)
- Defining events: [Enroute-descent: Near midair/TCAS alert/loss of separation](https://openairdocs.org/ntsb-events/260); [Enroute-cruise: Near midair/TCAS alert/loss of separation](https://openairdocs.org/ntsb-events/260)
- Status: Investigation ongoing
- Investigation class: Class 4 - Basic report with no Prelim publish
- NTSB office: Operational Factors Division
- Parties: FAA - PC
- NTSB case key (mKey): 202458
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=OPS26LA019
- Latest NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/202458/pdf
- Page: https://openairdocs.org/ntsb/OPS26LA019

## Sequence of events

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

- [Enroute-descent: Near midair/TCAS alert/loss of separation](https://openairdocs.org/ntsb-events/260) (defining event), aircraft 1
- [Enroute-cruise: Near midair/TCAS alert/loss of separation](https://openairdocs.org/ntsb-events/260) (defining event), aircraft 2

## Aircraft 1

- Registration: [N91SU](https://openairdocs.org/aircraft/N91SU), registered now, S/N 528, built 2015 (OpenAirDocs)
- Reported make and model: LEARJET INC 45
- Registry model: [Learjet 45](https://openairdocs.org/model/learjet-45) (registry code 5170805) (OpenAirDocs)
- Registry engine: [Honeywell TFE731-40BR-1](https://openairdocs.org/engine/honeywell-tfe731-40br-1) (registry code 34001, turbo-fan) (OpenAirDocs)
- Category: Airplane
- Serial number: 528
- Year built: 2015
- Damage: No damage
- Flight: Part 91
- Operator: Stockmeier Urethanes USA, Inc.
- Registered owner: Stockmeier Urethanes USA, Inc.
- Airworthiness certificate: Unknown
- Destination: TEB, Teterboro, NJ
- Flight plan: IFR
- Equipment: Unknown

## Aircraft 2

- Registration: [N657MW](https://openairdocs.org/aircraft/N657MW), registered now, S/N 9138, built 2023 (OpenAirDocs)
- Reported make and model: CIRRUS DESIGN CORP SR22
- Registry model: [Cirrus Design SR22](https://openairdocs.org/model/cirrus-design-sr22) (registry code 2130001) (OpenAirDocs)
- Registry engine: [Continental IO-550-N](https://openairdocs.org/engine/continental-io-550-n) (registry code 17215, reciprocating) (OpenAirDocs)
- Category: Airplane
- Serial number: 9138
- Year built: 2023
- Damage: No damage
- Flight: Part 91
- Airworthiness certificate: Unknown
- Equipment: Unknown

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

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