# NTSB SEA84LA041: Piper PA-18-135, N99620, Klamath Falls, OR, January 22, 1984

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: January 22, 1984, 12:10 local (20:10 UTC)
- Place: Klamath Falls, OR
- Coordinates: 42.310573, -122.070114 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=42.3106&lon=-122.0701&mi=10
- 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 case key (mKey): 39864
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=SEA84LA041
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/39864/pdf
- Page: https://openairdocs.org/ntsb/SEA84LA041

## Sequence of events

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

- On ground/water collision with object, takeoff - roll/run
  - terrain condition - slush covered (contributing factor)
  - unsuitable terrain or takeoff/landing/taxi area - selected, pilot in command (cause)
  - weather condition - carburetor icing conditions (contributing factor)
  - performance data - not understood, pilot in command (cause)
  - object - fence (contributing factor)
  - remedial action - misjudged, pilot in command (cause)
  - aborted takeoff - delayed, pilot in command (cause)
- Nose over, takeoff - roll/run

## Analysis

THE PLT ATTEMPTED A TAKEOFF ON A SLUSHY SOFT RWY. THE TAKEOFF WAS ABORTED AT THE RWY MIDPOINT DUE TO LACK OF ACCELERATION. DURING THE ABORT THE ACFT COLLIDED WITH A FENCE AND NOSED OVER. THE PLT THOUGHT THE RWY CONDITIONS AND CARBURETOR ICE.

## Aircraft

- Registration: N99620 (not matched to a registry record)
- Reported make and model: PIPER PA-18-135
- Category: Airplane
- Serial number: 18-3949
- Airframe hours: 2935
- Engines: LYCOMING O-290-D2 135 horsepower reciprocating
- Damage: Substantial damage
- Flight: Personal, Part 91
- Registered owner: Rex H. Ervin
- Airworthiness certificate: Standard, Normal
- Last inspection: Annual, May 6, 1983, 65 hours before
- Departed: KLAMATH FALLS, OR

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 44; commercial; airplane ratings: multi-engine land, single-engine land; instrument ratings: airplane; medical: class 3, valid medical--w/ waivers/lim; seat: left; flight hours: 2,066 total, 200 in this make and model, 30 in the last 90 days, 1 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: 240° at 10 knots
- Visibility: 10 statute miles
- Lowest ceiling: 1,200 ft overcast
- Temperature: 37 °F, dew point 36 °F
- Altimeter: 30.00 inHg
- Observed at: LMT, 5 nm away

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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