# NTSB ERA12WA089: Piper PA-28-236, Mercedes, Argentina, November 21, 2011

- Type: NTSB accident investigation
- Classification: Accident · Fatal · Foreign investigation
- Date: November 21, 2011, 13:20 local (13:20 UTC)
- Place: Mercedes, Argentina
- Coordinates: -34.649444, -59.450553
- Nearby events: https://openairdocs.org/map.md?lat=-34.6494&lon=-59.4506&mi=10
- Phase of flight: [Approach](https://openairdocs.org/ntsb-phases/500) (OpenAirDocs' grouping)
- Defining events: [Approach: Midair collision](https://openairdocs.org/ntsb-events/250); [Approach: Midair collision](https://openairdocs.org/ntsb-events/250)
- Highest injury: Fatal
- Injuries: 2 fatal, 2 uninjured
- Status: Led by another country's authority
- NTSB office: Eastern Region Aviation
- Lead agency: Other
- NTSB case key (mKey): 82412
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=ERA12WA089
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/82412/pdf
- NTSB docket: https://data.ntsb.gov/Docket?ProjectID=82412
- Page: https://openairdocs.org/ntsb/ERA12WA089

## Sequence of events

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

- [Approach: Midair collision](https://openairdocs.org/ntsb-events/250) (defining event), aircraft 1; cases with it: [All aircraft, 196 cases](https://openairdocs.org/ntsb-events/250/sequence.md)
- [Approach: Midair collision](https://openairdocs.org/ntsb-events/250) (defining event), aircraft 2; cases with it: [All aircraft, 196 cases](https://openairdocs.org/ntsb-events/250/sequence.md)

## Factual narrative (aircraft 2)

On November 21, 2011, about 1320 coordinated universal time, a Piper PA-28-236, Argentine Air Force designation PF-449, and a Cessna 152, Argentine registration LV-OOF, collided while on approach to Mercedes Airfield (MRD), Mercedes, Buenos Aires Province, Argentina. The flight instructor and the pilot receiving instruction aboard the Cessna were fatally injured, while the 2 military pilots aboard the Piper were not injured. Both flights were conducted under Argentine flight regulations. The investigation is under the direction of the Argentine Republic. For further information contact: Junta de Investigaciones de Accidentes de Aviación Civil 1370 Belgrano Avenue 11th Floor Buenos Aires, República Argentina C1093AAO Fax - 54-11-4381-6333 Email - jiaaci@speedy.com.ar This report is for informational purposes, and only contains information that was released by the Argentine Republic.

## Aircraft 1

- Registration: PG-449 (not matched to a registry record)
- Reported make and model: PIPER PA-28-236
- Damage: Minor damage
- Flight: Public aircraft, Non-U.S., non-commercial
- Registered owner: Argentina Air Force
- Destination: MRD, Mercedes
- Flight plan: Unknown
- Airport: MRD, Mercedes Airfield

## Aircraft 2

- Registration: LV-OOF (not matched to a registry record)
- Reported make and model: CESSNA 152
- Serial number: 152-84645
- Damage: Substantial damage
- Flight: Instructional, Non-U.S., non-commercial
- Flight plan: Unknown
- Airport: MRD, Mercedes Airfield

## Docket (1 files)

The files NTSB released with the investigation on November 30, 2011, on NTSB's docket system: https://data.ntsb.gov/Docket?ProjectID=82412. 46 KB in all.

- Foreign Accident Statement (item 1, .PDF, 46 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40358900&FileExtension=.PDF&FileName=Foreign%20Accident%20Statement-Master.PDF

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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