# NTSB ANC87LA121: Cessna 170, N4091V, Mi.70 Glenn Hwy, AK, August 13, 1987

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: August 12, 1987, 21:00 local (Aug 13, 1987, 05:00 UTC)
- Place: Mi.70 Glenn Hwy, AK
- Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed, report October 7, 1988
- Report: Approved by Office Director
- NTSB office: Alaska Regional Office
- NTSB case key (mKey): 4888
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=ANC87LA121
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/4888/pdf
- Page: https://openairdocs.org/ntsb/ANC87LA121

## 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 - fog (contributing factor)
  - weather condition - low ceiling (contributing factor)
  - weather condition - rain (contributing factor)
  - in-flight planning/decision - poor, pilot in command (cause)
- On ground/water collision with object, landing - roll
  - object - sign

## Analysis

THE PILOT STATED THE WEATHER WAS DETERIORATING WITH VISIBILITY LESS THAN ONE MILE AND RAINSHOWERS. THE PILOT ELECTED TO MAKE A PRECAUTIONARY LANDING ON A STATE HIGHWAY. DURING THE LANDING ROLL THE AIRCRAFT STRUCK A ROAD SIGN WITH THE RIGHT WING OF THE AIRCRAFT.

## Aircraft

- Registration: [N4091V](https://openairdocs.org/deregistered/N4091V-2012-11-19), registration cancelled 2012-11-19, S/N 18423, built 1948 (OpenAirDocs)
- Reported make and model: CESSNA 170
- Registry model: [Cessna 170](https://openairdocs.org/model/cessna-170) (registry code 2072302) (OpenAirDocs)
- Registry engine: [Continental C145 series](https://openairdocs.org/engine/continental-c145-series) (registry code 17012, reciprocating) (OpenAirDocs)
- Category: Airplane
- Serial number: 18423
- Airframe hours: 1365
- Engines: CONTINENTAL O-300 145 horsepower reciprocating
- Damage: Substantial damage
- Flight: Personal, Part 91
- Registered owner: John A. Baiamonte
- Airworthiness certificate: Standard, Normal
- Last inspection: Annual, August 15, 1987, 140 hours before
- Departed: TKJ, TOK, AK
- Destination: 215, BIRCHWOOD, AK
- Flight plan: VFR

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 27; private; airplane ratings: single-engine land; medical: class 3, valid medical--no waivers/lim.; seat: left; flight hours: 125 total, 125 in this make and model, 80 as pilot in command, 63 in the last 90 days, 20 in the last 30 days, 3 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Visibility: 1 statute miles
- Lowest ceiling: 500 ft
- Temperature: 19 °F, dew point 18 °F
- Altimeter: 30.00 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 19870812044449A](https://openairdocs.org/incident/19870812044449A), Aug 12, 1987: Cessna 170, Sutton, AK, Substantial damage. Weather turning to IFR. Elected to land on highway. Right wing struck a road sign on rollout.

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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