# NTSB ANC89LA165: Cessna U206, N756NG, Nondalton, AK, September 15, 1989

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: September 14, 1989, 18:10 local (Sep 15, 1989, 02:10 UTC)
- Place: Nondalton, AK
- Coordinates: 59.960304, -154.870941 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=59.9603&lon=-154.8709&mi=10
- Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed, report September 5, 1991
- Report: Approved by Office Director
- NTSB office: Alaska Regional Office
- NTSB case key (mKey): 5260
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=ANC89LA165
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/5260/pdf
- Page: https://openairdocs.org/ntsb/ANC89LA165

## Probable cause

FAILURE OF THE PILOT TO ATTAIN THE PROPER TOUCHDOWN POINT FOR THE LANDING, HIS EXCESSIVE AIRSPEED, AND HIS MISJUDGEMENT OF RUNWAY DISTANCE REMAINING.  FACTORS RELATED TO THE ACCIDENT WERE: LOOSE/WET GRAVEL ON THE RUNWAY AND THE LOCATION OF THE PARKED AIRCRAFT NEAR THE END OF THE RUNWAY.

## Sequence of events

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

- Overrun, landing - roll
  - proper touchdown point - not attained, pilot in command (cause)
  - airspeed - excessive, pilot in command (cause)
  - distance - misjudged, pilot in command (cause)
  - airport facilities,runway/landing area condition - wet (contributing factor)
  - airport facilities,runway/landing area condition - loose gravel/sandy (contributing factor)
- On ground/water collision with object, landing - roll
  - object - aircraft parked/standing (contributing factor)

## Analysis

AFTER LANDING, THE PLT WAS UNABLE TO STOP THE ACFT BEFORE IT CRASHED INTO AN AIRPLANE PARKED AT THE DEPARTURE END OF THE RWY. HE STATED THAT THE AIRPLANE'S BRAKES FAILED DURING THE LANDING ROLL. HOWEVER, SEVERAL WITNESSES STATED THAT THE PLT LANDED LONG & FAST, THEN ABORTED AN ATTEMPTED GO-AROUND. SKID MARKS FROM THE MAIN WHEELS WERE FOUND ON THE RWY. NO PREIMPACT PART FAILURE OR MALFUNCTION OF THE BRAKES WAS FOUND.

## Aircraft

- Registration: [N756NG](https://openairdocs.org/aircraft/N756NG), registered now, S/N U20604219, built 1977 (OpenAirDocs)
- Reported make and model: CESSNA U206
- Registry model: [Cessna U206G](https://openairdocs.org/model/cessna-u206g) (registry code 2073356) (OpenAirDocs)
- Registry engine: [Continental IO-520 series](https://openairdocs.org/engine/continental-io-520-series) (registry code 17032, reciprocating) (OpenAirDocs)
- Category: Airplane
- Serial number: U20604219
- Airframe hours: 3396
- Engines: CONTINENTAL IO-520-F 300 horsepower reciprocating
- Damage: Substantial damage
- Flight: Positioning, Part 91
- Operator: Lake Clark Air Service
- Registered owner: Glen R. Alsworth Sr.
- Airworthiness certificate: Standard, Normal
- Last inspection: 100 hour, August 21, 1989, 72 hours before
- Departed: Z30, PORT ALSWORTH, AK
- Destination: 5NN
- Flight plan: Company VFR
- Airport: 5NN, Nondalton, runway 20, 2,700 × 75 ft, gravel

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 43; commercial, flight instructor; airplane ratings: single-engine land, multi-engine sea, single-engine sea, multi-engine land; medical: class 1, valid medical--no waivers/lim.; seat: left; flight hours: 14,000 total, 200 in this make and model, 13,600 as pilot in command, 250 in the last 90 days, 120 in the last 30 days, 6 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: 240° at 5 knots
- Visibility: 60 statute miles
- Lowest ceiling: 5,000 ft broken
- Temperature: 61 °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 19890914034919A](https://openairdocs.org/incident/19890914034919A), Sep 14, 1989: Cessna U206G, Nondalton, AK, Substantial damage. Landed long and fast,reported no brakes, hit parked aircraft off end of runway. Brakes found to work normally.

## Other investigations on N756NG (1)

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 ANC94LA102](https://openairdocs.org/ntsb/ANC94LA102), Aug 9, 1994: Cessna 206 (N756NG), Bethel, AK, substantial damage. Probable cause: THE PILOT MISJUDGED THE STRENGTH OF THE TAILWIND AND DID NOT PERFORM A GO-AROUND IN A TIMELY FASHION SO AS TO AVOID LANDING THE AIRPLANE HALFWAY DOWN THE STRIP. FACTORS IN THE ACCIDENT WERE THE WET…

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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