# NTSB CHI90LA157: Beech K-35, N123AT, Oshkosh, WI, June 18, 1990

- Type: NTSB accident investigation
- Classification: Accident · Minor injuries · Limited investigation · Final report
- Date: June 17, 1990, 19:30 local (Jun 18, 1990, 00:30 UTC)
- Place: Oshkosh, WI
- Coordinates: 44.059825, -88.539833 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=44.0598&lon=-88.5398&mi=10
- Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping)
- Highest injury: Minor injuries
- Injuries: 2 minor
- Status: Completed, report October 2, 1992
- Report: Approved by Office Director
- NTSB case key (mKey): 14693
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=CHI90LA157
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/14693/pdf
- Page: https://openairdocs.org/ntsb/CHI90LA157

## Probable cause

FUEL MISMANAGEMENT.

## Sequence of events

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

- Loss of engine power(total) - nonmechanical, cruise - normal
  - fluid,fuel - starvation
  - fuel tank selector position - improper, pilot in command (cause)
  - inattentive, pilot in command (contributing factor)
- Forced landing, descent - emergency
- In flight collision with terrain/water, landing - flare/touchdown
  - terrain condition - roadway/highway
- On ground/water collision with object, landing - roll
  - object - tree(s)

## Analysis

THE PILOT WAS EN ROUTE AT 4,000 FEET MSL ON CROSS COUNTRY FLIGHT WHEN HE EXPERIENCED TOTAL LOSS OF POWER. THE PILOT STATED THAT HE SWITCHED TANKS BUT COULD NOT RESTART THE ENGINE. HE MADE A PLANNED APPROACH FOR A FORCED LANDING AT AN AIRPORT. THE PILOT LOWERED THE LANDING GEAR PREMATURELY ON FINAL APPROACH, THEN RAISED IT WHEN HE SAW HE WAS GOING TO LAND SHORT OF RUNWAY. A GEAR-UP LANDING WAS MADE ON RESIDENTIAL STREET ADJACENT TO THE AIRPORT. THE AIRCRAFT SLID INTO A TREE AFTER LANDING. THE INVESTIGATION REVEALED NO FUEL IN THE ENGINE FUEL SYSTEM. THE LEFT MAIN TANK, WHICH THE PILOT WAS USING, AND BOTH TIP TANKS, WERE EMPTY. THE RIGHT MAIN TANK AND BOTH AUXILIARY TANKS WERE FULL.

## Aircraft

- Registration: [N123AT](https://openairdocs.org/deregistered/N123AT-1990-08-01), registration cancelled 1990-08-01, S/N D5947 (OpenAirDocs)
- Reported make and model: BEECH K-35
- Registry model: [Beech K35](https://openairdocs.org/model/beech-k35) (registry code 1151524) (OpenAirDocs)
- Category: Airplane
- Serial number: D-5947
- Airframe hours: 3920
- Engines: CONTINENTAL IO-470-C1 250 horsepower reciprocating
- Damage: Substantial damage
- Flight: Personal, Part 91
- Registered owner: H.O.B. Corp
- Airworthiness certificate: Standard, Normal
- Last inspection: Annual, September 1, 1989, 65 hours before
- Departed: ENW, KENOSHA, WI
- Destination: D25, MANITOWISH, WI
- Flight plan: VFR

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 54; private; airplane ratings: single-engine land; instrument ratings: airplane; medical: class 3, valid medical--no waivers/lim.; seat: left; flight hours: 329 total, 57 in this make and model, 264 as pilot in command, 22 in the last 90 days, 3 in the last 30 days

## Weather

- Conditions: Visual (VMC), Day
- Wind: 250° at 10 knots
- Visibility: 20 statute miles
- Lowest ceiling: none
- Temperature: 75 °F, dew point 55 °F
- Altimeter: 29.00 inHg
- Observed at: OSH, 1 nm away

## 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 19900617020549A](https://openairdocs.org/incident/19900617020549A), Jun 17, 1990: Beech K35, Oshkosh, WI, Substantial damage. Engine quit at 4000 feet AGL near airport but undershot runway. Fuel seleted to left empty tank. Right tank full.

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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