# NTSB MKC85LA067: Cessna 150, N51004, Keokuk, IA, March 4, 1985

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: March 3, 1985, 18:00 local (Mar 4, 1985, 00:00 UTC)
- Place: Keokuk, IA
- Coordinates: 40.400596, -91.399993 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=40.4006&lon=-91.4000&mi=10
- Phase of flight: [Taxi](https://openairdocs.org/ntsb-phases/250) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed
- Report: Approved by Office Director
- NTSB case key (mKey): 33918
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=MKC85LA067
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/33918/pdf
- Page: https://openairdocs.org/ntsb/MKC85LA067

## Sequence of events

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

- On ground/water encounter with terrain/water, taxi - to takeoff
  - terrain condition - soft (contributing factor)
  - unsuitable terrain or takeoff/landing/taxi area - selected, pilot in command (cause)
  - judgment - poor, pilot in command (cause)
- On ground/water encounter with weather, taxi - to takeoff
  - weather condition - gusts (contributing factor)
  - wind information - disregarded, pilot in command (cause)
- Nose over, taxi - to takeoff

## Analysis

WHILE TAXIING FOR T/O ON A SOD RWY, GUSTING WINDS FLIPPED THE C-150 OVER AFTER IT BECAME BOGGED DOWN IN THE SOFT TERRAIN. THE PLT WAS AWARE OF THE GUSTING WIND CONDITIONS BUT WAS NOT EXPECTING TO GET THE A/C STUCK, EVEN THOUGH THE PILOT WAS AWARE IT HAD RAINED HARD THE DAY BEFORE. THE PLT STATED THAT HE CHOSE THE WET SOD INSTEAD OF THE ASPHALT RWY THE HEAD MORE INTO THE STRONG WINDS OF 20 PLUS KNOTS FROM 250 DEGS. THE SOD RWY WAS 27 & THE HARD SURFACE WAS RWY 31. HE ALSO SAID THAT HE THOUGHT THE 'ACFT WOULD HAVE BEEN ABLE TO HANDLE THE CROSS WIND.'

## Aircraft

- Registration: [N51004](https://openairdocs.org/deregistered/N51004-1988-04-06), registration cancelled 1988-04-06, S/N 15069703 (OpenAirDocs)
- Reported make and model: CESSNA 150
- Registry model: [Cessna 150J](https://openairdocs.org/model/cessna-150j) (registry code 2071820) (OpenAirDocs)
- Category: Airplane
- Serial number: 15069703
- Engines: LYCOMING O-200 100 horsepower reciprocating
- Damage: Substantial damage
- Flight: Personal, Part 91
- Registered owner: Victor Ahlberg
- Airworthiness certificate: Standard, Normal
- Departed: EOK, KEOKUK, IA

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 43; private; airplane ratings: single-engine land, multi-engine land; instrument ratings: airplane; medical: class 2, valid medical--no waivers/lim.; seat: left; flight hours: 2,889 total, 2,750 in this make and model, 2,750 as pilot in command, 25 in the last 90 days

## Weather

- Conditions: Visual (VMC), Day
- Wind: 250° at 20 knots, gusting 30
- Visibility: 12 statute miles
- Lowest ceiling: 3,200 ft overcast
- Temperature: 30 °F, dew point 10 °F
- Altimeter: 29.00 inHg
- Observed at: BRL, 18 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 19850303007019A](https://openairdocs.org/incident/19850303007019A), Mar 3, 1985: Cessna 150J, Keokuk, IA, Substantial damage. While taxiing to sod runway which was more aligned with wind, nose wheel bogged down in soft surface. Flipped over.

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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