NYC07LA146 · Bell-Carson 47G-Super C-4
Bell-Carson 47G-Super C-4 · Accident: total loss of engine power (mechanical failure) on approach
From Monmouth Executive Airport (BLM) to Muñoz Landing Airstrip (BLM)
Event
- NTSB case
- NYC07LA146
- 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
Bell-Carson 47G-Super C-4
- Aircraft type
- Bell Carson 47
- 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
- N867Z
- Operator
- Unknown
- Onboard fatalities
- Unknown
- Route
- From Monmouth Executive Airport (BLM), Wall Township, NJTo Muñoz Landing Airstrip (BLM)
- 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
- Approach · VFR pattern final
- First occurrenceThe 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
- Total loss of engine power (mechanical failure)
- 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
- Engine assembly, connecting rod › Failure, total
Approximate · Coordinates from the NTSB case API, which marks them as estimated or does not say; no uncertainty radius is established.
NTSB narrative
While on a 2-mile final approach to a runway, at 700 feet above ground level (agl), the helicopter pilot heard a loud "bang," which was followed by a total loss of engine power. The pilot performed an autorotation to a residential area, and the helicopter sustained substantial damage. The helicopter was manufactured in 1962, and the exact age of the engine could not be determined. The engine was last overhauled in 1990, and had accumulated about 224 hours of operation since that overhaul. Subsequent examination of the engine revealed that the number one connecting rod experienced a total failure, which also damaged the engine case.
Probable cause
A total failure of the number one connecting rod during approach.
Verbatim NTSB analysis and probable cause from the NTSB dataset
Sources
NTSB record NYC07LA146
- Event ID
- 20070626X00812
- Case number
- NYC07LA146
- Dataset
- historical-pre2008
- Source SHA-256
- 89e2df6d848e7ab3b42e7d7c7a03ff403303057a26ca04c95b3ea67201c3ce74
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: 988f4e53287a66d30ed10598446cb3f3d631826fd3cfc8c843efdc0de5d47d7e; retrieved 2026-09-22T03:44:22.232Z.