# NTSB ANC93LA006: Cessna 150F, N8048F, Denali, AK, October 7, 1992

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: October 7, 1992, 13:30 local (21:30 UTC)
- Place: Denali, AK
- Coordinates: 63.779682, -148.519119 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=63.7797&lon=-148.5191&mi=10
- Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed, report September 14, 1993
- Report: Approved by Office Director
- NTSB office: Alaska Regional Office
- NTSB case key (mKey): 5846
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=ANC93LA006
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/5846/pdf
- Page: https://openairdocs.org/ntsb/ANC93LA006

## Probable cause

THE INADEQUATE PREFLIGHT PLANNING AND PREPARATION BY THE STUDENT PILOT, THE STUDENT PILOT'S CONTINUED FLIGHT INTO KNOWN ADVERSE WEATHER AND THE PILOT'S FAILURE TO MAINTAIN DIRECTIONAL CONTROL ON THE ROADWAY LANDING. FACTORS RELATING TO THE ACCIDENT WERE: THE WEATHER OBSCURATION, INADEQUATE STUDENT TRAINING IN CROSS COUNTRY PLANNING AND WEATHER AVOIDANCE BY THE INSTRUCTOR, THE TERRAIN (ROADWAY) SELECTED FOR FORCED LANDING, AND THE SNOWBANK BORDERING THE LANDING AREA.

## Sequence of events

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

- In flight encounter with weather, cruise - normal
  - weather condition - obscuration (contributing factor)
  - preflight planning/preparation - inadequate, pilot in command (cause)
  - inadequate initial training, flight instructor(on ground) (contributing factor)
- On ground/water encounter with terrain/water, landing - roll
  - terrain condition - roadway/highway (contributing factor)
  - flight into known adverse weather - continued, pilot in command (cause)
- Nose over, landing - roll
  - terrain condition - snowbank (contributing factor)
  - directional control - not maintained, pilot in command (cause)

## Analysis

THE STUDENT PILOT ON A SOLO CROSS COUNTRY ENCOUNTERED IMC WEATHER WITH VISIBILITY, OBSCURED WITH 1/4 MILE IN SNOW NEAR MOUNT MCKINLEY.  THE PILOT STATED THAT HE HAD 2 HOURS FLIGHT TIME EXPERIENCE IN 90 DAYS AND THAT HE WAS FLYING ON A STUDENT CROSS COUNTRY SOLO ENDORSEMENT.  HE SAID HIS PREFLIGHT PLANNING WAS A WEATHER BRIEFING AT GULKANA, BUT HE DID NOT FILE A FLIGHT PLAN. FLIGHT VISIBILITY REDUCED AND THE PILOT INITIATED AN EMERGENCY DESCENT AND PRECAUTIONARY LANDING ON A ROADWAY. DIRECTIONAL CONTROL WAS NOT MAINTAINED AND THE AIRCRAFT NOSED OVER IN A SNOW BANK.

## Aircraft

- Registration: [N8048F](https://openairdocs.org/aircraft/N8048F), registered now, S/N 15064148, built 1966 (OpenAirDocs)
- Reported make and model: CESSNA 150F
- Registry model: [Cessna 150F](https://openairdocs.org/model/cessna-150f) (registry code 2071814) (OpenAirDocs)
- Registry engine: [Continental 0-200 series](https://openairdocs.org/engine/continental-0-200-series) (registry code 17020, reciprocating) (OpenAirDocs)
- Category: Airplane
- Serial number: 150-64148
- Airframe hours: 2101
- Engines: CONTINENTAL O-200-A 100 horsepower reciprocating
- Damage: Substantial damage
- Flight: Instructional, Part 91
- Operator: Bjarke J. Bennedsen
- Registered owner: Bjarke J. Bennedsen
- Airworthiness certificate: Standard, Normal
- Last inspection: Annual, April 15, 1992, 105 hours before
- Departed: GKN, GULKANA, AK
- Destination: FAI, FAIRBANKS, AK

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 25; student; medical: class 3, valid medical--no waivers/lim.; seat: left; flight hours: 59 total, 59 in this make and model, 38 as pilot in command, 2 in the last 90 days, 2 in the last 30 days, 2 in the last 24 hours

## Weather

- Conditions: Instrument (IMC), Day
- Wind: 360° at 7 knots
- Temperature: 30 °F, dew point 28 °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 19921007041419A](https://openairdocs.org/incident/19921007041419A), Oct 7, 1992: Cessna 150F, Denali, AK, Substantial damage. Student encountered heavy snow shower on crosscountry. Landed on snow covered road. Lost control. Nosed over.

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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