# Accident 20210209001149A: Aero Commander S2R, Alamo, TX, February 9, 2021

- Type: FAA accident report (Accident/Incident Data System), as reported
- Date: February 9, 2021, 17:35 local time
- Place: Alamo, TX
- Damage: Substantial damage
- Phase of flight: Takeoff: Climb Out
- Operating rules: Agricultural (Part 137)
- Operator: MDQG
- Location: 26.1531° N, 98.1350° W: From the FAA
- Nearby events: https://openairdocs.org/map.md?lat=26.1531&lon=-98.1350&mi=10
- Aircraft: N5679X, registered now (https://openairdocs.org/aircraft/N5679X) (OpenAirDocs)
- Registry model: Aero Commander S2R (registry code 0143022, https://openairdocs.org/model/aero-commander-s2r) (OpenAirDocs)
- Registry engine: Pratt & Whitney R1340 series (registry code 52016, https://openairdocs.org/engine/pratt-whitney-r1340-series) (OpenAirDocs)
- Reported make and model: AERO COMMANDER S2R
- Reported engine: P&W R1340 SERIES
- People aboard: 1
- Fatal injuries: 0
- Other injuries: 0
- Pilot certificates: Commercial pilot
- Pilot flight hours: 19,845 total
- NTSB investigation: [NTSB CEN21LA133](https://openairdocs.org/ntsb/CEN21LA133) (OpenAirDocs)
- FAA source: FAA Aviation Safety Information Portal (https://asip.faa.gov/)
- Page: https://openairdocs.org/incident/20210209001149A

## Narrative

As the FAA filed it, in capitals; the FAA replaces private details with ^PRIVACY DATA OMITTED^.

ON FEBRUARY 9, 2021 AT 1735 CDT ALAMO TEXAS, N5679X AN AERO COMMANDER SR2 THRUSH OPERATING ON A PART 137 CERTIFICATE FROM (43TX) MID-VALLEY DUSTERS INC., AIRPORT INDICATED A LOSS OF POWER ABOUT 100 YARDS PAST THE DEPARTURE END OF THE RUNWAY. THE PILOT PERFORMED AN EMERGENCY LANDING  COLLIDING WITH BRUSH AND SMALL TREES. NO INJURIES REPORTED BY PILOT.

THE PILOT STATED HE ABORTED CLIMB OUT DUE TO AN ODD ENGINE SOUND, LANDING IN AN AREA BEFORE AN UPCOMING POWERLINE AND  HIGH TRAFFIC ROAD. THE PILOT LANDED LAND SHORT OF THE OBSTACLES AND COLLIDED WITH A TREELINE BEFORE STOPPING THE AIRCRAFT.

AIRCRAFT: SUBSTANTIAL DAMAGE TO BOTH OUTBOARD WING LEADING EDGES, RIBS AND  WING TIPS. LOWER SPRAY BOOM EQUIPMENT TORN FROM LOWER ATTACH POINTS.

POST ACCIDENT :  AT THE REQUEST OF THE NTSB, A LOCAL AGRICULTURAL OPERATOR WAS EMPLOYED TO PERFORM ENGINE AN RUN AND LIMITED INSPECTION OF THE ENGINE AND AIRCRAFT.

FAA IIC  EXCERPTS FROM THE REPORT:

A VISUAL INSPECTION OF THE ENGINE FOR MECHANICAL CONDITION WITH NO ABNORMALITIES REPORTED. NO FUEL CONTAMINATION WAS NOTED IN THE FUEL TANK SUMPS, HEADER TANK SUMPS, AND MANUAL AUXILIARY FUEL PUMP SUMP. THE REAR CARBURETOR BOWL DRAIN WAS REMOVED AND  REPORT NOTED, ?A SMALL AMOUNT OF WATER CONTAMINATED FUEL (LESS THAN ONE OUNCE) WAS OBSERVED.

"EVERYTHING FUNCTIONED NORMALLY DURING THE RUN UP TO 1800 RPM, MAGS CHECKED WITH NORMAL DROP, PROPELLER CYCLED PROPERLY". THE REPORT CONCLUDED: ?ONE POSSIBLE REASON FOR LOSS OF POWER ON TAKE-OFF COULD HAVE BEEN A SMALL AMOUNT OF WATER CONTAMINATION IN THE FUEL SYSTEM CAUSING MOMENTARY LOSS OF POWER?.

## The NTSB's investigation of this event (1)

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.

- [NTSB CEN21LA133](https://openairdocs.org/ntsb/CEN21LA133), Feb 9, 2021: Aero Commander S2R (N5679X), Alamo, TX, substantial damage. Probable cause: The partial loss of engine power due to water-contaminated fuel.

From the FAA Accident/Incident Data System. Reports are matched to registry aircraft by N-number and event date, checked against the reported make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model. For accidents, the NTSB's own investigation is the fuller record.

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