# NTSB ANC86LA097: Cessna 305, N5312G, Figure Eight Lk, AK, July 3, 1986

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: July 2, 1986, 21:05 local (Jul 3, 1986, 05:05 UTC)
- Place: Figure Eight Lk, AK
- Phase of flight: [Initial climb](https://openairdocs.org/ntsb-phases/350) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 2 uninjured
- Status: Completed
- Report: Approved by Office Director
- NTSB office: Alaska Regional Office
- NTSB case key (mKey): 4691
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=ANC86LA097
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/4691/pdf
- Page: https://openairdocs.org/ntsb/ANC86LA097

## Sequence of events

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

- Loss of engine power(partial) - nonmechanical, takeoff - initial climb
  - reason for occurrence undetermined (cause)
- Forced landing, descent - emergency
- Nose over, landing - roll
  - aircraft handling - not maintained, pilot in command (cause)

## Analysis

THE PLT ATTEMPTED AN EMERGENCY LANDING ON A LAKE FOLLOWING A PARTIAL PWR LOSS IN-FLT. DURING TOUCHDOWN THE PLT LOST CONTROL OF THE ACFT WHICH NOSED OVER ON IT'S BACK AND SANK INTO THE LAKE. THE ACFT WAS NOT RECOVERED FROM THE WATER.

## Aircraft

- Registration: [N5312G](https://openairdocs.org/deregistered/N5312G-2018-05-10), registration cancelled 2018-05-10, S/N 22746, built 1951 (OpenAirDocs)
- Reported make and model: CESSNA 305
- Registry model: [Cessna 305A](https://openairdocs.org/model/cessna-305a) (registry code 2074002) (OpenAirDocs)
- Registry engine: [Continental O-470 series](https://openairdocs.org/engine/continental-o-470-series) (registry code 17026, reciprocating) (OpenAirDocs)
- Category: Airplane
- Serial number: 22746
- Engines: CONTINENTAL O-470-11B 213 horsepower reciprocating
- Damage: Substantial damage
- Flight: Personal, Part 91
- Operator: Donald D. Knight, doing business as Civil Air Patrol, Inc.
- Registered owner: Civil Air Patrol
- Airworthiness certificate: Standard, Normal
- Last inspection: 100 hour, January 17, 1986, 81 hours before
- Departed: ANCHORAGE, AK

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 44; commercial, flight instructor; airplane ratings: single-engine sea, single-engine land, multi-engine land; medical: class 1, valid medical--no waivers/lim.; seat: rear; flight hours: 3,200 total, 100 in this make and model, 3,200 as pilot in command, 36 in the last 90 days, 2 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: 270° at 15 knots
- Visibility: 40 statute miles
- Lowest ceiling: none
- Temperature: 61 °F, dew point 30 °F
- Altimeter: 29.00 inHg

## 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 19860703029839A](https://openairdocs.org/incident/19860703029839A), Jul 3, 1986: Cessna 305A, Figure Eight La, AK, Substantial damage. Crash occurred after power failure when emergency landing was attempted on a lake.

## Other investigations on N5312G (4)

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.

- [NTSB CEN16LA064](https://openairdocs.org/ntsb/CEN16LA064), Nov 24, 2015: Cessna 305A (N5312G), Sulphur, LA, substantial damage. Probable cause: The loss of engine power due to water and contaminants in the carburetor, which resulted in a forced landing to a wet field.
- [NTSB ERA10CA257](https://openairdocs.org/ntsb/ERA10CA257), May 6, 2010: Cessna 305A (N5312G), Fort Pierce, FL, substantial damage. Probable cause: The pilot's failure to maintain directional control during a crosswind landing.
- [NTSB ANC84FA192](https://openairdocs.org/ntsb/ANC84FA192), Sep 28, 1984: Cessna 305A (N5312G), Anchorage, AK, substantial damage
- [NTSB ANC73DAG76](https://openairdocs.org/ntsb/ANC73DAG76), Jan 23, 1973: Cessna 305A (N5312G), Anchorage, AK, substantial damage

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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