# NTSB DCA25WA304: Boeing 737, Near MAR holding fix within Algiers TMA, Algeria, July 29, 2025

- Type: NTSB incident investigation
- Classification: Incident · Class 5 · Foreign
- Date: July 29, 2025, 13:22 local (13:22 UTC)
- Place: Near MAR holding fix within Algiers TMA, Algeria
- Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping)
- Defining event: [Enroute-holding (IFR): Near midair/TCAS alert/loss of separation](https://openairdocs.org/ntsb-events/260)
- Status: Led by another country's authority
- Investigation class: Class 5 - No publish
- NTSB office: Major Investigations Division
- NTSB case key (mKey): 200878
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=DCA25WA304
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/200878/pdf
- Page: https://openairdocs.org/ntsb/DCA25WA304

## Sequence of events

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

- [Enroute-holding (IFR): Near midair/TCAS alert/loss of separation](https://openairdocs.org/ntsb-events/260) (defining event), aircraft 1; cases with it: [All aircraft, 96 cases](https://openairdocs.org/ntsb-events/260/sequence.md)

## Aircraft 1

- Registration: 7T-VCE (not matched to a registry record)
- Reported make and model: BOEING 737 (800)
- Category: Airplane
- Damage: No damage
- Flight: Part 121
- Operator: Air Algérie

## Aircraft 2

- Registration: TS-INM (not matched to a registry record)
- Reported make and model: AIRBUS A220N
- Category: Airplane
- Damage: No damage
- Flight: Part 121
- Operator: Nouvelair

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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