CEN12CA464 · Bertram William J BERTRAM 2000
Bertram William J BERTRAM 2000 · Accident: low altitude operation/event while maneuvering
From Shiocton Airport (W34) to Shiocton Airport (W34)
Event
- NTSB case
- CEN12CA464
- Event typeAccident: someone killed or seriously injured, or the aircraft substantially damaged (NTSB definition). Incident: an occurrence that affected or could have affected safety, short of that. Glossary
- Accident
- InvestigationHow far the investigation had got when the record was published: preliminary, ongoing, final or completed. Unknown where the source does not say. Glossary
- Completed
- API-reported fatalities
- 0 · all aircraft and ground
- Ground fatalities
- Unknown
- OperationWhat kind of flying it was, grouped by the rules it flew under: airline (US Part 121), air taxi and commuter (Part 135), general aviation (Part 91 and similar), military or government. Glossary
- General aviation
- WeatherVisual meteorological conditions (VMC): good enough to fly by looking outside. Instrument conditions (IMC): cloud or low visibility, flying by instruments. Glossary
- Visual Meteorological Cond
Bertram William J BERTRAM 2000
- Aircraft type
- Bertram William BERTRAM 2000
- Category
- Helicopter
- RegistrationThe aircraft's tail number, such as N12345 or G-ABCD. Registrations are reissued, so the same one years apart can be a different aircraft. Glossary
- N115WB
- Operator
- William J. Bertram · private individual
- Onboard fatalities
- Unknown
- Route
- From Shiocton Airport (W34), Shiocton, WITo Shiocton Airport (W34), Shiocton, WI
- Aircraft age
- Not recorded
- Flight rulesThe regulations the flight operated under: in the US, Part 91 (general aviation), Part 121 (airlines), Part 135 (air taxi and commuter) and others; for flights abroad, the NTSB's coarser commercial or non-commercial code. Glossary
- Part 91: General Aviation
- Phase of flightThe stage of the flight when things started to go wrong: standing, taxi, takeoff, initial climb, en route, maneuvering, approach or landing. Glossary
- Maneuvering · low-altitude flying
- Defining eventThe single coded event the NTSB judges best describes what happened (records from 2008 on). Older records name the first occurrence in the sequence instead. Glossary
- Low altitude operation/event
- DamageDestroyed: beyond practical repair. Substantial: damage that affects the structure, performance or handling and normally needs major repair. Minor: less than that. Glossary
- Substantial
Cause areas
- Aircraft › Aircraft oper/perf/capability
- Personnel issues › Psychological
Approximate · Coordinates as recorded by the NTSB; no uncertainty radius is established.
NTSB narrative
The pilot of the gyrocopter reported that he was taking aerial photos of the airport. He stated he was flying toward the airport and trying to take photos when he realized he was getting too close to the airport. He initiated a turn downwind away from the airport at which time the gyrocopter lost altitude. The lower right side of the fuselage and the right landing gear strut contacted a guy wire attached to a utility pole alongside the highway that bordered the south side of the airport. The gyrocopter then descended, impacted terrain, and came to rest in a ditch alongside the highway, which resulted in substantial damage to the vertical tail surfaces and the main rotor blades. The pilot stated that he was distracted by trying to use the camera and that he was not paying attention to the surroundings when the accident occurred.
Probable cause
The pilot’s distraction with taking photographs, which resulted in his failure to maintain sufficient altitude to avoid the guy wire.
Verbatim NTSB analysis and probable cause from the NTSB dataset
Sources
NTSB record CEN12CA464
- Event ID
- 20120722X00131
- Case number
- CEN12CA464
- Dataset
- full-current
- Source SHA-256
- 5cf380f0061817c0331a6b2d8cc7e0ee3a79bea469a1001dc5c10e56f35f5ab3
Source notes (5)
- Unreviewed is an editorial label, not an investigation status. API-sourced is not report-checked or human-reviewed. Explicit event totals are used without summing aircraft injury tables; onboard allocation is withheld. Unknown values remain unknown. The operation category is mapped from the NTSB-reported FAR part and has not been reviewed.
- Filled from the NTSB case API where the bulk record had no value: investigation status. Values present in the bulk record are kept.
- The date is the local date, which is the same as the UTC date the NTSB stores.
- API snapshot SHA-256: d90e2df143f77057584f48bd4900551970cf35632264fd1c9735c04c178468b7; retrieved 2026-09-15T19:01:56.603Z.
- Corrected after a review of the NTSB narrative, which states these values explicitly: departure, destination. Misspelled city name; W34 is Shiocton Airport, Shiocton, WI, as the location field spells it. Misspelled city name; W34 is Shiocton Airport, Shiocton, WI, as the location field spells it.