# NTSB MKC89LA021: Cessna U206G, N5359U, Montezuma, IA, November 9, 1988

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: November 9, 1988, 17:40 local (23:40 UTC)
- Place: Montezuma, IA
- Coordinates: 41.580905, -92.519012 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=41.5809&lon=-92.5190&mi=10
- Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed, report September 11, 1989
- Report: Approved by Office Director
- NTSB case key (mKey): 34720
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=MKC89LA021
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/34720/pdf
- Page: https://openairdocs.org/ntsb/MKC89LA021

## Sequence of events

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

- Airframe/component/system failure/malfunction, cruise
  - electrical system,alternator - failure,total (contributing factor)
  - operation with known deficiencies in equipment - continued, pilot in command (cause)
  - in-flight planning/decision - poor, pilot in command (cause)
- On ground/water collision with object, landing - roll
  - precautionary landing - attempted, pilot in command
  - weather condition - drizzle/mist (contributing factor)
  - terrain condition - wet (contributing factor)
  - object - fence (contributing factor)

## Analysis

WHILE ON A VFR CROSS COUNTRY CARGO FLIGHT, THE COMMERCIAL PLT SAID HIS ALTERNATOR FAILED AND THAT WITHIN EIGHT MINUTES HE LOST ELECTRICAL POWER AND WAS UNABLE TO OPERATE THE NAVIGATION INSTRUMENTS. HE CONTINUED TOWARD HIS DESTINATION ABOUT 2 MORE HOURS WHEN WEATHER CONDITIONS DETERIORATED AND DARKNESS ARRIVED. UNSURE OF HIS LOCATION HE SPOTTED RUNWAY LIGHTS BELOW AND SPIRALED DOWN TO LAND ON THE UNCONTROLLED AIRSTRIP. DURING THE DOWNWIND LANDING ATTEMPT ON WET TURF HE WAS UNABLE TO STOP AND COLLIDED WITH A FENCE CAUSING SUBSTANTIAL DAMAGE.

## Aircraft

- Registration: N5359U (not matched to a registry record)
- Reported make and model: CESSNA U206G
- Category: Airplane
- Serial number: U20605240
- Airframe hours: 2845
- Engines: CONTINENTAL IO-520-F 300 horsepower reciprocating
- Damage: Substantial damage
- Flight: Business, Part 91
- Operator: Rohl, Lawrence E.
- Registered owner: Rohl, Lawrence E
- Airworthiness certificate: Standard, Normal
- Last inspection: 100 hour, October 7, 1988, 20 hours before
- Departed: BKL, CLEVELAND, OH
- Destination: RAP, RAPID CITY, SD
- Airport: 7C5, Sig Field, runway 18, 2,770 × 105 ft, grass/turf

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 37; commercial; airplane ratings: multi-engine land, single-engine land; instrument ratings: airplane; medical: class 1, valid medical--no waivers/lim.; seat: left; flight hours: 1,017 total, 53 in this make and model, 958 as pilot in command, 119 in the last 90 days, 51 in the last 30 days, 4 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Night/dark
- Wind: 300° at 10 knots
- Visibility: 3 statute miles
- Temperature: 41 °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 19881109050389A](https://openairdocs.org/incident/19881109050389A), Nov 9, 1988: Cessna U206G, Montezuma, IA, Substantial damage. Losing electric power from failed alternator and deteriorating weather. Spotted runway but overshot it on landing.

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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