# Accident 20160718011239A: Brandt Leroy E SONEX, Lodi, WI, July 18, 2016

- Type: FAA accident report (Accident/Incident Data System), as reported
- Date: July 18, 2016, 19:15 local time
- Place: Lodi, WI
- Airport: Lodi Lakeland
- Damage: Substantial damage
- Phase of flight: Climb
- Operating rules: General operating rules (Part 91)
- Location: 43.3333° N, 89.5208° W: From the FAA
- Nearby events: https://openairdocs.org/map.md?lat=43.3333&lon=-89.5208&mi=10
- Aircraft: N393SX, a cancelled registration (https://openairdocs.org/deregistered/N393SX-2020-03-06) (OpenAirDocs)
- Registry model: Brandt Leroy E SONEX (registry code 05633MY, https://openairdocs.org/model/brandt-leroy-e-sonex) (OpenAirDocs)
- Registry engine: Aerovee 2.1 (registry code 01402, https://openairdocs.org/engine/aerovee-2-1) (OpenAirDocs)
- Reported make and model: BRANDT LEROY E SONEX
- Reported engine: AEROVEE 2.1
- People aboard: 1
- Fatal injuries: 0
- Other injuries: 0
- Pilot certificates: Sport pilot
- Pilot flight hours: 180 total, 43 in this make and model, 7 in the last 90 days
- NTSB investigation: [NTSB CEN16LA273](https://openairdocs.org/ntsb/CEN16LA273) (OpenAirDocs)
- FAA source: FAA Aviation Safety Information Portal (https://asip.faa.gov/)
- Page: https://openairdocs.org/incident/20160718011239A

## Narrative

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

ON JULY 18, 2016, AT 1915 CDT A SONEX, N393SX, MADE AN EMERGENCY LANDING AT 9WN5 FOLLOWING A PARTIAL POWER LOSS.  AFTER TOUCHDOWN THE NOSE GEAR COLLAPSED REARWARD INTO THE FIREWALL AND THE LEFT MAIN GEAR WAS SHEARED OFF.  THE FIREWALL SUSTAINED DAMAGE TO THE LOWER PORTION FROM CONTACT WITH THE NOSE STRUT.  THE SPORT PILOT WAS THE SOLE OCCUPANT AND RECEIVED NO INJURIES.  THE AIRCRAFT RECEIVED SUBSTANTIAL DAMAGE.  THE AIRCRAFT WAS BEING OPERATED BY THE SPORT PILOT ON A LOCAL FLIGHT FROM 9WN5, AND WAS APPROXIMATELY 3.5 MILES NORTHWEST OF THE AIRPORT WHEN THE POWER LOSS OCCURRED.  VISUAL METEOROLOGICAL CONDITIONS PREVAILED AT THE TIME.  UPON INSPECTION OF THE ENGINE, THE #2 CYLINDER INTAKE VALVE ADJUSTING SCREW WAS FOUND TO BE BROKEN.  THIS RESULTED IN THE INTAKE VALVE MOVING TO THE CLOSED POSITION WHICH CAUSED A LOSS OF ENGINE 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 CEN16LA273](https://openairdocs.org/ntsb/CEN16LA273), Jul 19, 2016: Brandt Sonex (N393SX), Lodi, WI, substantial damage. Probable cause: The separated rocker arm assembly for undetermined reasons, which resulted in the partial loss of engine power and led to the landing gear collapsing during the subsequent forced landing.

## Other reports on N393SX (1)

Matched to the same aircraft by N-number and date.

- [Accident 20181215022239A](https://openairdocs.org/incident/20181215022239A), Dec 15, 2018: Brandt Leroy E SONEX (N393SX), Lodi, WI, Substantial damage. On December 15, 2018 an experimental amateur built Sonex aircraft N393SX with a single pilot on board left Lodi Lakeland (9WN5) airport for a pleasure flight.…

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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