# NTSB CEN21LA407: Aeromot AMT-100, N69FW, Menomonie, WI, September 7, 2021

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Class 4 · Limited · Final report
- Date: September 7, 2021, 12:15 local (17:15 UTC)
- Place: Menomonie, WI
- Coordinates: 44.892333, -91.867806 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=44.8923&lon=-91.8678&mi=10
- Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping)
- Defining event: [Landing: Landing gear not configured](https://openairdocs.org/ntsb-events/095)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed
- Report: Approved by Office Director
- Investigation class: Class 4 - Basic report with no Prelim publish
- NTSB office: Central Region
- Parties: Federal Aviation Administration, Minneapolis FSDO
- NTSB case key (mKey): 103823
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=CEN21LA407
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/103823/pdf
- NTSB docket: https://data.ntsb.gov/Docket?ProjectID=103823
- Page: https://openairdocs.org/ntsb/CEN21LA407

## Probable cause

The pilot’s failure to extend the landing gear.

## Findings

NTSB's coded findings; those marked are part of the probable cause.

- [Landing gear system: gear extension and retract sys](https://openairdocs.org/ntsb-findings/01023230): Aircraft › Aircraft systems · Not used/operated (probable cause); cases with it: [Aeromot AMT-100, 1 case](https://openairdocs.org/ntsb-findings/01023230/cases.md?model=0160003), [All aircraft, 416 cases](https://openairdocs.org/ntsb-findings/01023230/cases.md)
- [Use of equip/info: use of equip/system](https://openairdocs.org/ntsb-findings/02063015): Personnel issues › Task performance · Pilot (probable cause); cases with it: [Aeromot AMT-100, 1 case](https://openairdocs.org/ntsb-findings/02063015/cases.md?model=0160003), [All aircraft, 1,391 cases](https://openairdocs.org/ntsb-findings/02063015/cases.md)
- [Action: forgotten action/omission](https://openairdocs.org/ntsb-findings/02041035): Personnel issues › Action/decision · Pilot (probable cause); cases with it: [Aeromot AMT-100, 1 case](https://openairdocs.org/ntsb-findings/02041035/cases.md?model=0160003), [All aircraft, 440 cases](https://openairdocs.org/ntsb-findings/02041035/cases.md)

## Sequence of events

The events NTSB coded, in order, by phase of flight. The defining event best describes what happened.

- [Landing: Landing gear not configured](https://openairdocs.org/ntsb-events/095) (defining event); cases with it: [Aeromot AMT-100, 1 case](https://openairdocs.org/ntsb-events/095/sequence.md?model=0160003), [All aircraft, 584 cases](https://openairdocs.org/ntsb-events/095/sequence.md)

## Analysis

The pilot reported that, during a straight in approach, he forgot to extend the landing gear and he landed with the landing gear retracted. Subsequently, the glider slid for about 500 ft before it came to rest in the grass off the left side of the runway. The glider sustained substantial damage to the lower fuselage and left wing. The pilot reported that there were no preaccident mechanical failures or malfunctions with the glider that would have precluded normal operation.

## Aircraft

- Registration: [N69FW](https://openairdocs.org/deregistered/N69FW-2023-08-04), registration cancelled 2023-08-04, S/N 100005, built 1987 (OpenAirDocs)
- Reported make and model: AEROMOT AMT-100 (NO SERIES)
- Registry model: [Aeromot AMT-100](https://openairdocs.org/model/aeromot-amt-100) (registry code 0160003) (OpenAirDocs)
- Registry engine: [Limbach LIMBACH L2000](https://openairdocs.org/engine/limbach-limbach-l2000) (registry code 38601, 4 cycle) (OpenAirDocs)
- Category: Glider
- Serial number: 100005
- Year built: 1987
- Airframe hours: 797.95
- Engines: Limbach L2000E01 80 horsepower reciprocating
- Damage: Substantial damage
- Flight: Personal, Part 91
- Airworthiness certificate: Standard, Normal
- Last inspection: Annual, October 7, 2020, 19.5 hours before
- Airport: LUM, Menomonie Municipal, runway 27, 5,074 × 75 ft, asphalt
- Equipment: Unknown

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 75; injuries: none; airline transport; airplane ratings: multi-engine land, single-engine land, single-engine sea; instrument ratings: airplane; medical: basicmed, without waivers/limitations; last flight review July 8, 2020; seat: left; restraint: 5-point; flight hours: 4,032 total, 170 in this make and model, 3,660 as pilot in command, 4 in the last 90 days, 0 in the last 30 days, 0 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: 290° at 12 knots, gusting 19
- Visibility: 10 statute miles
- Temperature: 32 °F, dew point 32 °F
- Altimeter: 2992.00 inHg
- Observed at: KLUM
- METAR: SA	08/09/2021 18:35->	
METAR KLUM 081835Z AUTO 29012G19KT 10SM 18/10 A2989 RMK AO2 T01790101=

## FAA reports on this event (1)

The FAA's own accident and incident reports, matched to the aircraft by N-number and date (OpenAirDocs).

- [Accident 20210907015459A](https://openairdocs.org/incident/20210907015459A), Sep 7, 2021: Aeromot AMT-100, Menomonie, WI, Substantial damage. 2021-09-07 N69FW Aeromot AMT-100 gear up landing klum New variable pitch propeller installed on 09/03/2021 at aircraft hangar on [privacy data…

## Docket (3 files)

The files NTSB released with the investigation on April 6, 2022, on NTSB's docket system: https://data.ntsb.gov/Docket?ProjectID=103823. 2.5 MB in all.

- Pilot/operator aircraft accident report, NTSB form 6120.1 (item 1, PDF, 9 pages, 1.7 MB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=13408676&FileExtension=pdf&FileName=02%20-%20Pilot%20Report_Redacted-Rel.pdf
- FAA record of conversation with pilot (item 2, PDF, 2 pages, 50 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=13408686&FileExtension=pdf&FileName=03%20-%20FAA%20Record%20of%20Conversation%20with%20Pilot-Rel.pdf
- Accident report photos (item 3, PDF, 3 pages, 752 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=13409169&FileExtension=pdf&FileName=04%20-%20Photos-Rel.pdf

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.

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