# NTSB WPR27LA008: Hakala John Charles Lancair IV-P-T, N5UC, Ontario, OR, October 4, 2026

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Class 3 · Limited · Investigation open
- Date: October 4, 2026, 18:30, time zone not recorded
- Place: Ontario, OR
- Location: 44.0253° N, 116.9774° W: Placed by OpenAirDocs: center of Ontario, OR, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=44.0253&lon=-116.9774&mi=10
- Phase of flight: [Initial climb](https://openairdocs.org/ntsb-phases/350) (OpenAirDocs' grouping)
- Defining event: [Initial climb: Loss of engine power (partial)](https://openairdocs.org/ntsb-events/342)
- Highest injury: No injuries
- Injuries: 2 uninjured
- Status: Investigation ongoing
- Investigation class: Class 3
- NTSB office: Western Pacific Region
- NTSB case key (mKey): 203948
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=WPR27LA008
- Latest NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/203948/pdf
- Page: https://openairdocs.org/ntsb/WPR27LA008

## Sequence of events

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

- [Initial climb: Loss of engine power (partial)](https://openairdocs.org/ntsb-events/342) (defining event)

## Aircraft

- Registration: [N5UC](https://openairdocs.org/aircraft/N5UC), registered now, S/N LIV-524, built 2004 (OpenAirDocs)
- Reported make and model: HAKALA JOHN CHARLES LANCAIR IV-P-T
- Registry model: [Hakala John Charles LANCAIR IV-P-T](https://openairdocs.org/model/hakala-john-charles-lancair-iv-p-t) (registry code 05617DJ) (OpenAirDocs)
- Registry engine: [Walter M601 series](https://openairdocs.org/engine/walter-m601-series) (registry code 64002, reciprocating) (OpenAirDocs)

From the NTSB's public API. Aircraft are matched to registry aircraft by N-number and event date; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model.

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