# NTSB ANC89LA126: Cessna 140, N7G, Nyac Mine, AK, July 21, 1989

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: July 20, 1989, 19:30 local (Jul 21, 1989, 03:30 UTC)
- Place: Nyac Mine, AK
- Phase of flight: [Approach](https://openairdocs.org/ntsb-phases/500) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 2 uninjured
- Status: Completed, report July 9, 1990
- Report: Approved by Office Director
- NTSB office: Alaska Regional Office
- NTSB case key (mKey): 5228
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=ANC89LA126
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/5228/pdf
- Page: https://openairdocs.org/ntsb/ANC89LA126

## Probable cause

FAILURE OF THE LEFT RUDDER PEDAL BAR ASSEMBLY AND FAILURE OF THE PILOT TO MAINTAIN CONTROL OF THE AIRCRAFT.  IMPROPER MAINTENANCE AND THE PILOT'S LACK OF TOTAL EXPERIENCE WERE CONSIDERED TO BE CONTRIBUTING FACTORS.

## Sequence of events

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

- Airframe/component/system failure/malfunction, approach - vfr pattern - final approach
  - flt control syst,rudder control - failure,total (cause)
  - maintenance - improper, other maintenance personnel (contributing factor)
- Loss of control - in flight, go-around (vfr)
  - go-around - initiated
  - aircraft control - not maintained, pilot in command (cause)
  - lack of total experience, pilot in command (contributing factor)
- In flight collision with terrain/water, go-around (vfr)

## Aircraft

- Registration: [N7G](https://openairdocs.org/deregistered/N7G-2013-05-06), registration cancelled 2013-05-06, S/N 14375, built 1948 (OpenAirDocs)
- Reported make and model: CESSNA 140
- Registry model: [Cessna 140](https://openairdocs.org/model/cessna-140) (registry code 2071602) (OpenAirDocs)
- Registry engine: [Lycoming 0-235 series](https://openairdocs.org/engine/lycoming-0-235-series) (registry code 41505, 4 cycle) (OpenAirDocs)
- Category: Airplane
- Serial number: 14375
- Engines: LYCOMING O-235-C1 115 horsepower reciprocating
- Damage: Substantial damage
- Flight: Personal, Part 91
- Operator: Lucas, Michael R.
- Registered owner: Michael R Lucas
- Airworthiness certificate: Standard, Normal
- Last inspection: Annual, July 1, 1989, 2 hours before
- Departed: BET, BETHEL, AK
- Flight plan: VFR
- Airport: Nyac

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 40; commercial; airplane ratings: single-engine land; instrument ratings: airplane; medical: class 2, valid medical--no waivers/lim.; seat: left; flight hours: 261 total, 27 in this make and model, 178 as pilot in command, 2 in the last 90 days, 2 in the last 30 days, 1 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: 100° at 5 knots
- Visibility: 30 statute miles
- Lowest ceiling: none
- Temperature: 55 °F, dew point -0 °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 19890720028119A](https://openairdocs.org/incident/19890720028119A), Jul 20, 1989: Cessna STC140, Nyac, AK, Substantial damage. Left rudder bar failed recovering from right slip. Began go around,crashed in right turn. Unknown repair to bar.

## Other investigations on N7G (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 ANC83FAG04](https://openairdocs.org/ntsb/ANC83FAG04), Feb 12, 1983: Cessna 140 (N7G), Iliamna, AK, 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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