# NTSB LAX86LAMS1: Cessna U206C, N144FP, Maunaloa, HI, March 21, 1986

- Type: NTSB accident investigation
- Classification: Accident · Fatal · Final report
- Date: March 20, 1986, 14:42 local (Mar 21, 1986, 00:42 UTC)
- Place: Maunaloa, HI
- Coordinates: 21.130424, -157.210021 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=21.1304&lon=-157.2100&mi=10
- Phase of flight: [Unknown](https://openairdocs.org/ntsb-phases/990) (OpenAirDocs' grouping)
- Highest injury: Fatal
- Injuries: 1 fatal
- Status: Completed, report March 30, 1988
- Report: Approved by Office Director
- NTSB case key (mKey): 25269
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=LAX86LAMS1
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/25269/pdf
- Page: https://openairdocs.org/ntsb/LAX86LAMS1

## Sequence of events

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

- Missing aircraft, unknown
  - reason for occurrence undetermined (cause)

## Analysis

WHILE ON AN INTER-ISLAND CARGO FLIGHT CONDUCTED UNDER 14 CFR 135, THE PILOT REPORTED TO THE HONOLULU ARTCC THAT THE AIRPLANE WAS EXPERIENCING A LOSS OF PROPELLER RPM; HE DID NOT REPORT THAT THE ENGINE WAS LOSING POWER. THE AIRPLANE CRASHED INTO THE PACIFIC OCEAN SHORTLY THEREFORE. NEITHER THE AIRPLANE NOR THE PILOT WAS RECOVERED AFTER A 2-DAY SEARCH. THE PROPELLER WAS RECENTLY OVERHAULED AND INSTALLED ONTHE AIRPLANE. THE PROPELLER HAD ACCRUED ABOUT 10 HOURS SINCE OVERHAUL AT THE TIME OF THE ACCIDENT.

## Aircraft

- Registration: [N144FP](https://openairdocs.org/deregistered/N144FP-1989-02-06), registration cancelled 1989-02-06, S/N U2060956 (OpenAirDocs)
- Reported make and model: CESSNA U206C
- Registry model: [Cessna U206C](https://openairdocs.org/model/cessna-u206c) (registry code 2073332) (OpenAirDocs)
- Category: Airplane
- Serial number: U2060956
- Airframe hours: 3272
- Engines: CONTINENTAL IO-520F 300 horsepower reciprocating
- Damage: Destroyed
- Flight: Part 135
- Operator: Hutchinson Auto & Air
- Registered owner: Hutchinson Auto & Air
- Airworthiness certificate: Standard, Normal
- Last inspection: Annual, January 17, 1986, 10 hours before
- Departed: OGG, KAHULUI, HI
- Destination: HNL, HONOLULU, HI

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 37; commercial; airplane ratings: single-engine land, multi-engine land; instrument ratings: airplane; medical: class 2, valid medical--no waivers/lim.; seat: left; flight hours: 830 in this make and model, 80 in the last 90 days, 40 in the last 30 days, 20 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: 5° at 16 knots, gusting 22
- Visibility: 25 statute miles
- Lowest ceiling: none
- Temperature: 81 °F, dew point 63 °F
- Altimeter: 29.00 inHg
- Observed at: HNL, 16 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 19860320007089A](https://openairdocs.org/incident/19860320007089A), Mar 20, 1986: Cessna U206C, Maunaloa, HI, Destroyed. Loosing power and rough engine over water. Ditched 3 miles offshore. Pilot nor aircraft 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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