# NTSB ANC85LA017: Cessna 310J, N313SL, Tok, AK, November 12, 1984

- Type: NTSB accident investigation
- Classification: Accident · Minor injuries · Limited investigation · Final report
- Date: November 12, 1984, 19:56 local (23:56 UTC)
- Place: Tok, AK
- Coordinates: 63.180065, -143.099899 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=63.1801&lon=-143.0999&mi=10
- Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping)
- Highest injury: Minor injuries
- Injuries: 1 minor
- Status: Completed
- Report: Approved by Office Director
- NTSB office: Alaska Regional Office
- NTSB case key (mKey): 4445
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=ANC85LA017
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/4445/pdf
- Page: https://openairdocs.org/ntsb/ANC85LA017

## Sequence of events

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

- Loss of engine power(total) - mech failure/malf, cruise - normal
  - engine assembly,other - blocked(total) (cause)
  - lubricating system,oil line - ice (cause)
  - lubricating system,oil seal - failure,total
  - lubricating system,oil cooler - failure,total
- Forced landing, descent - emergency
  - in-flight planning/decision - improper, pilot in command (cause)
  - not performed, pilot in command (cause)
  - procedures/directives - not followed, pilot in command (cause)
  - overconfidence in aircraft's ability, pilot in command (cause)
- In flight collision with object, landing - flare/touchdown
  - object - tree(s) (cause)

## Analysis

THE ACFT CRASHED DURING AN EMERG NIGHT LANDING AFTER THE LOSS OF PWR ON BOTH ENGINES. INVESTIGATION REVEALED THE RT ENG WAS SECURED BECAUSE OF DECREASING OIL PRESSURE & A VISIBLE OIL LEAK. THERE WERE SEVEN AIRPORTS WITHIN REACH OF THE ACFT WHEN THIS ENG WAS SECURED. HOWEVER, THE PLT INFORMED THE ATC SPECIALIST AT NORTHWAY THAT HE INTENDED TO CONTINUE ON TOWARD HIS FAIRBANKS DESTINATION & WOULD LAND AT BIG DELTA IF HE HAD FURTHER PROBLEMS. THERE WERE NO SUITABLE LANDING AREAS BETWEEN TANACROSS & BIG DELTA, A DISTANCE OF 74 MILES. LATER WHEN THE PLT SECURED THE LT ENG, HE ATTEMPTED TO REACH THE ALASKA HWY BUT CRASHED IN A WOODED AREA. EXAMINATION OF THE ENGS REVEALED THAT BOTH ENG BREATHER TUBES WERE FROZEN FULL OF ICE FOR 5 INCHES ABOVE THE NORMAL DISCHARGE OPENING. THE ENG NOSE CASE SEAL WAS BLOWN OUT ON THE RT ENG. THE OIL COOLER ON THE LT ENG WAS RUPTURED. THERE WERE NO PRESSURE RELIEF HOLES IN EITHER OF THE ENG BREATHER TUBES/PIPES. AN ALTERNATE BREATER TUBE WAS NOT INSTALLED.

## Aircraft

- Registration: [N313SL](https://openairdocs.org/deregistered/N313SL-2012-09-06), registration cancelled 2012-09-06, S/N 310J0130, built 1965 (OpenAirDocs)
- Reported make and model: CESSNA 310J
- Registry model: [Cessna 310J](https://openairdocs.org/model/cessna-310j) (registry code 2074226) (OpenAirDocs)
- Registry engine: [Continental I0-470 series](https://openairdocs.org/engine/continental-i0-470-series) (registry code 17027, reciprocating) (OpenAirDocs)
- Category: Airplane
- Serial number: 310J-0130
- Airframe hours: 2929
- Engines: CONTINENTAL IO-470-U 260 horsepower reciprocating
- Damage: Substantial damage
- Flight: Personal, Part 91
- Operator: Chris Thomas Catalone
- Registered owner: Galvin Flying Service, Inc.
- Airworthiness certificate: Standard, Normal
- Last inspection: Annual, November 10, 1984, 14 hours before
- Departed: JNU, JUNEAU, AK
- Destination: FAI, FAIRBANKS, AK
- Flight plan: VFR
- Airport: 6K8, Tok Junction

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 44; commercial; airplane ratings: single-engine land, multi-engine land; instrument ratings: airplane; medical: class 1, valid medical--no waivers/lim.; seat: left; flight hours: 2,692 total, 14 in this make and model, 2,514 as pilot in command, 54 in the last 90 days, 13 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Night/dark
- Wind: 290° at 4 knots
- Visibility: 50 statute miles
- Lowest ceiling: none
- Temperature: -20 °F, dew point 37 °F
- Altimeter: 29.00 inHg
- Observed at: ORT, 34 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 19841112062719A](https://openairdocs.org/incident/19841112062719A), Nov 12, 1984: Cessna 310J, Tok, AK, Substantial damage. Lost oil pressure, shutdown. Bypassed suitable airports. Other engine quit. Hit trees. Breather tubes full of ice.

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.

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.