# NTSB CHI93LA174: Lake LA-4-200, N35HM, Springport, MI, May 16, 1993

- Type: NTSB accident investigation
- Classification: Accident · Minor injuries · Limited investigation · Final report
- Date: May 16, 1993, 18:30 local (22:30 UTC)
- Place: Springport, MI
- Coordinates: 42.370491, -84.689392 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=42.3705&lon=-84.6894&mi=10
- Phase of flight: [Takeoff](https://openairdocs.org/ntsb-phases/300) (OpenAirDocs' grouping)
- Highest injury: Minor injuries
- Injuries: 2 minor
- Status: Completed, report October 25, 1993
- Report: Approved by Office Director
- NTSB case key (mKey): 15718
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=CHI93LA174
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/15718/pdf
- Page: https://openairdocs.org/ntsb/CHI93LA174

## Probable cause

A PARTIAL LOSS OF ENGINE POWER FOR UNDETERMINED REASONS.

## Sequence of events

In NTSB's coding before 2008 (https://www.ntsb.gov/GILS/Documents/codman.pdf).

- Loss of engine power(partial) - nonmechanical, takeoff - roll/run
  - reason for occurrence undetermined (cause)
- In flight collision with terrain/water, takeoff - aborted
  - terrain condition - dirt bank/rising embankment

## Analysis

WHILE MAKING A TAKEOFF FROM A LAKE, THE PILOT THOUGHT THAT THE AMPHIBIAN AIRPLANE WAS NOT DEVELOPING TAKEOFF POWER AND ATTEMPTED TO ABORT THE TAKEOFF.  THE AIRPLANE IMPACTED A GRASSY MOUND DURING THE ABORTED TAKEOFF. AFTER THE AIRPLANE CAME TO A REST THE PILOT FOUND THAT THE THROTTLE WAS SET FULLY OPEN.  A POST-ACCIDENT EXAMINATION OF THE AIRPLANE FAILED TO REVEAL ANY MECHANICAL ANOMALIES.

## Aircraft

- Registration: [N35HM](https://openairdocs.org/aircraft/N35HM), registered now, S/N 1075, built 1983 (OpenAirDocs)
- Reported make and model: LAKE LA-4-200
- Registry model: [Lake LA-4-200](https://openairdocs.org/model/lake-la-4-200) (registry code 5110310) (OpenAirDocs)
- Registry engine: [Lycoming I0360 SER A&C](https://openairdocs.org/engine/lycoming-i0360-ser-a-c) (registry code 41511, reciprocating) (OpenAirDocs)
- Category: Airplane
- Serial number: 1075
- Airframe hours: 903
- Engines: LYCOMING IO-360-A1B6 200 horsepower reciprocating
- Damage: Substantial damage
- Flight: Personal, Part 91
- Operator: Legg, Thomas C.
- Registered owner: Legg, Thomas C.
- Airworthiness certificate: Standard, Normal
- Last inspection: Annual, October 24, 1992, 46 hours before

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 36; private; airplane ratings: single-engine land, single-engine sea; medical: class 3, valid medical--no waivers/lim.; seat: left; flight hours: 555 total, 127 in this make and model, 420 as pilot in command, 16 in the last 90 days, 16 in the last 30 days, 4 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: 310° at 14 knots
- Visibility: 20 statute miles
- Lowest ceiling: none
- Temperature: 57 °F, dew point 27 °F
- Altimeter: 29.00 inHg
- Observed at: BTL, 25 nm away

## 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 19930516013949A](https://openairdocs.org/incident/19930516013949A), May 16, 1993: Conaer LA4200, Springport, MI, Substantial damage. Beleived not normal power on water takeoff. Aborted late and struck a grassy mound. No defects found.

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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