# NTSB ANC84FA094: Cessna A185F, N1047F, Talkeetna, AK, June 17, 1984

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Field investigation · Final report
- Date: June 17, 1984, 10:30 local (18:30 UTC)
- Place: Talkeetna, AK
- Coordinates: 62.450305, -149.78923 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=62.4503&lon=-149.7892&mi=10
- Phase of flight: [Takeoff](https://openairdocs.org/ntsb-phases/300) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 4 uninjured
- Status: Completed
- Report: Approved by Office Director
- NTSB office: Alaska Regional Office
- NTSB case key (mKey): 4215
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=ANC84FA094
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/4215/pdf
- Page: https://openairdocs.org/ntsb/ANC84FA094

## Sequence of events

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

- Airframe/component/system failure/malfunction, takeoff
  - terrain condition - rough/uneven
  - landing gear,main gear - fatigue (cause)
- Main gear collapsed, landing
  - landing gear,main gear strut - overload

## Analysis

THE ACFT WAS BEING USED TO TRANSPORT MOUNTAIN CLIMBERS FROM A GLACIER. DURING TAKEOFF FROM THE GLACIER, THE RIGHT LANDING GEAR STRUT FAILED AT THE AXLE POINT & THE WHEEL/SKI DANGLED FREE. WHEN HE LANDED ON A GRAVEL RWY, THE PLT HELD OFF THE RIGHT SIDE AS LONG AS POSSIBLE. WHEN THE RIGHT STRUT TOUCHED DOWN, IT DUG IN, THEN COLLAPSED. AN EXAM REVEALED A FATIGUE CRACK THRU APRX 65% OF THE STRUT, PN 0741001-8, WHERE 2 BOLT HOLES WERE DRILLED, APRX 1 1/2 INCHES FROM THE LOWER END. THE CRACK ORIGINATED IN THE BOTTOM OF CORROSION PITS (RUST) LOCATED AT THE INBOARD SIDE OF THE UPPER AFT SPINDLE ATTACHMENT BOLT HOLE.

## Aircraft

- Registration: [N1047F](https://openairdocs.org/aircraft/N1047F), registered now, S/N 18502704 (OpenAirDocs)
- Reported make and model: CESSNA A185F
- Registry model: [Cessna A185F](https://openairdocs.org/model/cessna-a185f) (registry code 2072821) (OpenAirDocs)
- Registry engine: [Continental IO-520 series](https://openairdocs.org/engine/continental-io-520-series) (registry code 17032, reciprocating) (OpenAirDocs)
- Category: Airplane
- Serial number: 18502704
- Airframe hours: 6000
- Engines: CONTINENTAL IO-520 300 horsepower reciprocating
- Damage: Substantial damage
- Flight: Part 135
- Registered owner: Talkeetna Air Taxi, Inc.
- Airworthiness certificate: Standard, Normal
- Last inspection: 100 hour, March 2, 1984, 31 hours before
- Departed: KAHILTNA GLACER, AK
- Flight plan: VFR
- Airport: TKA, Talkeetna, runway 36, 4,000 × 60 ft, asphalt

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 30; commercial, flight instructor; airplane ratings: single-engine land, multi-engine land, single-engine sea; instrument ratings: airplane; medical: class 2, valid medical--no waivers/lim.; seat: left; flight hours: 9,860 total, 6,000 in this make and model, 9,850 as pilot in command, 150 in the last 90 days, 75 in the last 30 days, 6 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: calm
- Visibility: 50 statute miles
- Lowest ceiling: none
- Temperature: 64 °F, dew point 10 °F

## Other investigations on N1047F (3)

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 ANC95LA059](https://openairdocs.org/ntsb/ANC95LA059), May 26, 1995: Cessna 185 (N1047F), Talkeetna, AK, substantial damage. Probable cause: THE FAILURE OF THE PILOT-IN-COMMAND TO IDENTIFY UNSAFE SNOW CONDITIONS AT THE SITE. A FACTOR ASSOCIATED WITH THE ACCIDENT IS THE SOFT SNOW IN THE TAKEOFF AREA.
- [NTSB ANC92FA069](https://openairdocs.org/ntsb/ANC92FA069), May 9, 1992: Cessna 185 (N1047F), Ruth Glacier, AK, minor damage. Probable cause: THE FAILURE OF THE PILOTS OF BOTH AIRPLANES TO MAINTAIN AN ADEQUATE VISUAL LOOKOUT. FACTORS WHICH CONTRIBUTED TO THE ACCIDENT WAS THE FAILURE OF THE PILOT OF THE CE-172 TO BECOME AWARE OF AND TO USE…
- [NTSB ANC89LA081](https://openairdocs.org/ntsb/ANC89LA081), May 29, 1989: Cessna 185F (N1047F), Kahiltna Glac, AK, substantial damage. Probable cause: THE PILOT'S DECISION TO COMMIT HIMSELF TO A LANDING BEFORE COMPLETING AN EVALUATION OF THE WEATHER IN THE VICINITY OF THE LANDING SITE. CONTRIBUTING TO THE SEVERITY OF THE ACCIDENT WAS THE SNOWBANK…

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.