# NTSB ANC85LA147: Cessna 172, N61684, Chickaloon Flat, AK, August 6, 1985

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: August 5, 1985, 18:30 local (Aug 6, 1985, 02:30 UTC)
- Place: Chickaloon Flat, AK
- Phase of flight: [Takeoff](https://openairdocs.org/ntsb-phases/300) (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): 4539
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=ANC85LA147
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/4539/pdf
- Page: https://openairdocs.org/ntsb/ANC85LA147

## Sequence of events

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

- On ground/water encounter with terrain/water, takeoff - roll/run
  - unsuitable terrain or takeoff/landing/taxi area - selected, pilot in command (cause)
  - terrain condition - soft (contributing factor)
  - terrain condition - ditch (contributing factor)
- Nose over, landing

## Analysis

THE PLT MADE AN OFF-ARPT LANDING ON AN AREA OF CLAY SILT WITH SPARSE GRASS. AFTER SLOWING THE ACFT TO ABOUT 20 TO 25 MPH, THE NOSEWHEEL WENT INTO A SHALLOW GULLY OF SOFT CLAY. THE ACFT THEN STOPPED ABRUPTLY & NOSED OVER.

## Aircraft

- Registration: [N61684](https://openairdocs.org/aircraft/N61684), registered now, S/N 17264728, built 1975 (OpenAirDocs)
- Reported make and model: CESSNA 172
- Registry model: [Cessna 172M](https://openairdocs.org/model/cessna-172m) (registry code 2072418) (OpenAirDocs)
- Registry engine: [Lycoming 0-320 series](https://openairdocs.org/engine/lycoming-0-320-series) (registry code 41508, reciprocating) (OpenAirDocs)
- Category: Airplane
- Serial number: 17264728
- Airframe hours: 1250
- Engines: LYCOMING O-320-E2D 150 horsepower reciprocating
- Damage: Substantial damage
- Flight: Personal, Part 91
- Registered owner: Jerry Haggerty
- Airworthiness certificate: Standard, Normal
- Last inspection: Annual, May 22, 1985, 33 hours before
- Departed: MRI, ANCHORAGE, AK

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 42; commercial, flight instructor; airplane ratings: single-engine sea, multi-engine land, single-engine land; instrument ratings: airplane; medical: class 2, valid medical--no waivers/lim.; seat: left; flight hours: 1,190 total, 232 in this make and model, 1,130 as pilot in command, 25 in the last 90 days, 10 in the last 30 days, 1 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: 320° at 8 knots
- Visibility: 50 statute miles
- Lowest ceiling: none
- Temperature: 64 °F, dew point 57 °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 19850805038549A](https://openairdocs.org/incident/19850805038549A), Aug 5, 1985: Cessna 172M, Chickaloon Flat, AK, Substantial damage. After touchdown nose wheel went into gulley of soft clay. Aircraft nosed over.

## Other investigations on N61684 (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 OAK77DVD54](https://openairdocs.org/ntsb/OAK77DVD54), Sep 21, 1977: Cessna 172 (N61684), Eureka, CA, 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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