# NTSB FTW86LRG23: North American Rockwell S2-R, N34956, Mercedes, TX, June 2, 1986

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Final report
- Date: June 2, 1986, 12:20 local (17:20 UTC)
- Place: Mercedes, TX
- Coordinates: 26.139112, -97.9207 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=26.1391&lon=-97.9207&mi=10
- Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed
- Report: Approved by Office Director
- NTSB case key (mKey): 22157
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=FTW86LRG23
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/22157/pdf
- Page: https://openairdocs.org/ntsb/FTW86LRG23

## Sequence of events

In NTSB's coding before 2008 (https://www.ntsb.gov/GILS/Documents/codman.pdf).

- Loss of engine power, climb - to cruise
  - reason for occurrence undetermined (cause)
- Forced landing, descent - emergency
- Nose over, landing - roll
  - terrain condition - soft (cause)
  - terrain condition - none suitable (contributing factor)

## Analysis

THE ACFT EXPERIENCED A COMPLETE LOSS OF ENG POWER AT AN ALT OF 200 FT AGL SHORTLY AFTER TAKEOFF. THE PLT WAS FORCED TO LAND AGAINST THE ROWS IN A MUDDY COTTON FIELD. SHORTLY AFTER TOUCHDOWN, THE ACFT FLIPPED OVER. THE EXACT NATURE OF THE ENG FAILURE WAS NOT DETERMINED DURING THE INVESTIGATION.

## Aircraft

- Registration: [N34956](https://openairdocs.org/deregistered/N34956-2005-04-15), registration cancelled 2005-04-15, S/N 2003R, built 1974 (OpenAirDocs)
- Reported make and model: North American Rockwell Corp. S2-R
- Registry model: [Rockwell International S-2R](https://openairdocs.org/model/rockwell-international-s-2r) (registry code 7630202) (OpenAirDocs)
- Registry engine: [Pratt & Whitney R1340 series](https://openairdocs.org/engine/pratt-whitney-r1340-series) (registry code 52016, reciprocating) (OpenAirDocs)
- Category: Airplane
- Serial number: 2003R
- Engines: P&W R-1340-ANI 600 horsepower reciprocating
- Damage: Substantial damage
- Flight: Aerial application, Part 137
- Operator: Mercedes
- Registered owner: Mercedes Flying Service
- Airworthiness certificate: Special, Restricted (Special)
- Airport: 57R, Mercedes, Texas, runway 13, 3,000 × 40 ft, asphalt

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 28; commercial; airplane ratings: single-engine land; instrument ratings: airplane; medical: class 2, valid medical--w/ waivers/lim; seat: center; flight hours: 3,800 total, 2,700 in this make and model, 3,725 as pilot in command

## Weather

- Conditions: Visual (VMC), Day
- Wind: 150° at 7 knots
- Visibility: 12 statute miles
- Lowest ceiling: none
- Temperature: 91 °F
- Altimeter: 29.00 inHg

## FAA reports on this event (1)

The FAA's own accident and incident reports, matched to the aircraft by N-number and date (OpenAirDocs).

- [Accident 19860602027799A](https://openairdocs.org/incident/19860602027799A), Jun 2, 1986: Ayres S2RR1340REST, Mercedes, TX, Substantial damage. The engine lost power on takeoff. The aircraft flipped on the forced landing. Supercharger turbine had failed.

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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