CEN14LA487 · Robinson Helicopter Company R44 II
Johnson Helicopter Services Robinson Helicopter Company R44 II · Accident: low altitude operation/event while maneuvering
From Red Oak Municipal Airport (RDK) to Red Oak Municipal Airport (RDK)
Event
- NTSB case
- CEN14LA487
- 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
- 1 · all aircraft and ground
- Ground fatalities
- 0
- 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
Robinson Helicopter Company R44 II
- Aircraft type
- Robinson R44
- 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
- N699TQ
- Operator
- Johnson Helicopter Services
- Onboard fatalities
- Unknown
- Route
- From Red Oak Municipal Airport (RDK), Red Oak, IATo Red Oak Municipal Airport (RDK), Red Oak, IA
- Aircraft age
- About 10 years (built 2004)
- 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 137: Agricultural
- 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
- Also codedOther events the NTSB coded in the sequence, such as a wire strike after a loss of power. Flight Findings uses them for its kinds of event. Glossary
- Wire
- 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
- Environmental issues › Physical environment
- Personnel issues › Action/decision
- Personnel issues › Psychological
Approximate · Coordinates from the NTSB case API, which marks them as estimated or does not say; no uncertainty radius is established.
NTSB narrative
The pilot was conducting agricultural spray operations in a helicopter. He had sprayed three fields earlier in the day and was en route to the next field when the accident occurred. Witnesses reported observing the helicopter heading north and then colliding with a suspended static line. The helicopter subsequently pitched up, descended, and impacted terrain. Larger transmission lines were located above the smaller static lines. A witness who was about 1/4 mile from the accident site stated that he could see the larger transmission lines but that he did not see the smaller static lines until the helicopter struck one of them. He also stated that it did not appear that the pilot took any evasive action to avoid the line. A postaccident examination of the helicopter did not reveal any anomalies that would have precluded normal operation.
Probable cause
The pilot’s inadequate visual lookout, which resulted in a collision with a static line.
Verbatim NTSB analysis and probable cause from the NTSB dataset
Sources
NTSB record CEN14LA487
- Event ID
- 20140908X10448
- Case number
- CEN14LA487
- Dataset
- full-current
- Source SHA-256
- 5cf380f0061817c0331a6b2d8cc7e0ee3a79bea469a1001dc5c10e56f35f5ab3
Source notes (4)
- 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, coordinates. 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: 439742fc7300c569ed5c2e89749c7146adc3130f7d5e039149ae0d02cc2ff1a5; retrieved 2026-09-14T17:25:33.650Z.