# NTSB SEA86LA226: Hegsted S16B, N10LH, Kelso, WA, August 27, 1986

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: August 27, 1986, 16:05 local (23:05 UTC)
- Place: Kelso, WA
- Coordinates: 46.140125, -122.799011 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=46.1401&lon=-122.7990&mi=10
- Phase of flight: [Approach](https://openairdocs.org/ntsb-phases/500) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 2 uninjured
- Status: Completed
- Report: Approved by Office Director
- NTSB case key (mKey): 40487
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=SEA86LA226
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/40487/pdf
- Page: https://openairdocs.org/ntsb/SEA86LA226

## Sequence of events

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

- Loss of engine power(partial) - mech failure/malf, approach - vfr pattern - final approach
  - fuel system,carburetor - inoperative (cause)
  - maintenance - improper, other maintenance personnel (cause)
- Forced landing, descent - emergency
- Undershoot, landing
- Hard landing, landing - flare/touchdown
- Nose over, landing - flare/touchdown

## Analysis

THE STUDENT PILOT WAS ON FINAL WHEN THE ENGINE CEASED OPERATING. A FORCED LANDING WAS ACCOMPLISHED WITH TOUCHDOWN BEING ABOUT 100 YARDS SHORT OF THE RUNWAY. A HARD LANDING WAS MADE WITH THE AIRCRAFT COMING TO REST INVERTED. THE NEEDLE VALVE TO THE CARBURETOR WAS FOUND TO HAVE BACKED OUT 1/2' WITH NO SAFETY WIRING PRESENT.

## Aircraft

- Registration: [N10LH](https://openairdocs.org/deregistered/N10LH-2013-08-05), registration cancelled 2013-08-05, S/N G-1, built 1970 (OpenAirDocs)
- Reported make and model: HEGSTED S16B
- Registry model: [Hegsted H1](https://openairdocs.org/model/hegsted-h1) (registry code 05611DZ) (OpenAirDocs)
- Registry engine: [Continental A&C65 series](https://openairdocs.org/engine/continental-a-c65-series) (registry code 17003, reciprocating) (OpenAirDocs)
- Category: Airplane, amateur-built
- Serial number: G-1
- Engines: CONTINENTAL C-65 65 horsepower reciprocating
- Damage: Substantial damage
- Flight: Personal, Part 91
- Registered owner: Lyle H. Nitschke
- Airworthiness certificate: Special, Experimental (Special)
- Departed: KLS, KELSO, WA
- Airport: KLS, Kelso, runway 29, 4,395 × 65 ft, asphalt

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 28; student; airplane ratings: single-engine land; medical: class 3, valid medical--w/ waivers/lim; seat: front; flight hours: 75 total

## Weather

- Conditions: Visual (VMC), Day
- Wind: calm
- Visibility: 50 statute miles
- Lowest ceiling: none
- Temperature: 81 °F

## 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 19860827045139A](https://openairdocs.org/incident/19860827045139A), Aug 27, 1986: Amtrsa STITSSA6B, Kelso, WA, Substantial damage. The aircraft impacted short of the runway. Carburetor found improperly installed. Student carrying a passenger.

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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