# Lach BENSEN B-8M

- Type: Aircraft model (FAA registry)
- Registry codes: 1300804, 1302110
- Manufacturer (registry): LACH
- Model: BENSEN B-8M
- Aircraft type: Rotorcraft
- Category: Rotorcraft
- Engines: 1 · Reciprocating
- Seats: 1
- Weight class: Up to 12,499 lb
- Cruise speed: 45 mph
- Certification: Not type certificated
- Registered aircraft: 0
- Page: https://openairdocs.org/model/lach-bensen-b-8m

Model codes come from the FAA registry's reference file. ADs are matched to them by model name and maker. The FAA lists this model under more than one registry code, usually for different spellings of the maker. This page covers them all.

## ADs that may apply (OpenAirDocs)

Matched to this model by model name and maker. Each AD's applicability may narrow it by serial number, part number or equipment.

None matched.

## Registered aircraft

None registered with this model now.

## NTSB investigations (2)

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 BFO93LA149](https://openairdocs.org/ntsb/BFO93LA149), Sep 2, 1993: Lach Bensen B-8M (N8447), Fall River, MA, substantial damage. Probable cause: FATIGUE FAILURE OF THE GYROCOPTER'S MAIN ROTOR CONTROL ARM. fACTORS RELATED TO THE ACCIDENT WERE: A LOOSE CLAMP ON THE ROTOR CONTROL ARM, DUE TO INADEQUATE MAINTENANCE OR INSPECTION, WHICH RESULTED…
- [NTSB CHI79FEE72](https://openairdocs.org/ntsb/CHI79FEE72-134979), Jul 20, 1979: Lach/Bensen B8M (N8447), Rockford, IL, substantial damage

## FAA accident and incident reports (2)

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.

- [Accident 19930902032819A](https://openairdocs.org/incident/19930902032819A), Sep 2, 1993: Amtr B8M (N8447), Fall River, MA, Substantial damage. During landing flare gyrocopter went out of control. Rolled over. Rotor control arm had failed from fatigue.
- [Accident 19790720015979A](https://openairdocs.org/incident/19790720015979A), Jul 20, 1979: Amtrbx BENSENB8M (N8447), Rockford, IL, Substantial damage. Took off and climbed out in simi stall. Descended into a corn field at the end of the runway.

## The same model under other registry codes

Amateur-built copies and renamed makers get their own codes.

- [Zurawski Paul M BENSEN B-8M](https://openairdocs.org/model/zurawski-paul-m-bensen-b-8m): 1 registered aircraft, registry code 05606VH
- [Robertson William Scott BENSEN B8M](https://openairdocs.org/model/robertson-william-scott-bensen-b8m): 1 registered aircraft, registry code 05614O0
- [Neal Larry BENSEN B8M](https://openairdocs.org/model/neal-larry-bensen-b8m): 1 registered aircraft, registry code 05623D6
- [Goddard Dick Sim BENSEN B-8M](https://openairdocs.org/model/goddard-dick-sim-bensen-b-8m): 1 registered aircraft, registry code 05624KI
- [Burns Jerry D BENSEN B8M](https://openairdocs.org/model/burns-jerry-d-bensen-b8m): 1 registered aircraft, registry code 05638E3
- [Anthony H Goebel BENSEN B-8-M](https://openairdocs.org/model/anthony-h-goebel-bensen-b-8-m): 1 registered aircraft, registry code 13007H8
- [Fields Ralph BENSEN B8M](https://openairdocs.org/model/fields-ralph-bensen-b8m): 1 registered aircraft, registry code 1302043
- [Novotny BENSEN B-8M](https://openairdocs.org/model/novotny-bensen-b-8m): 1 registered aircraft, registry code 1302149
- [Goodknight BENSEN B-8M](https://openairdocs.org/model/goodknight-bensen-b-8m): 1 registered aircraft, registry code 1302158
- [Morgan Barney B BENSEN B-8M](https://openairdocs.org/model/morgan-barney-b-bensen-b-8m): 1 registered aircraft, registry code 13021DH
- [Castro Antonio J BENSEN B-8M](https://openairdocs.org/model/castro-antonio-j-bensen-b-8m): 1 registered aircraft, registry code 13021FX
- [Mitchell BENSEN B-8M](https://openairdocs.org/model/mitchell-bensen-b-8m): 1 registered aircraft, registry code 13021G6

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.