# NTSB LAX82DA288: Cessna U206B, N4991F, Grass Valley, CA, August 3, 1982

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Final report
- Date: August 3, 1982, 14:10 local (21:10 UTC)
- Place: Grass Valley, CA
- Coordinates: 39.17929, -120.979255 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=39.1793&lon=-120.9793&mi=10
- Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed, report August 3, 1983
- Report: Approved by Office Director
- NTSB case key (mKey): 70892
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=LAX82DA288
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/70892/pdf
- Page: https://openairdocs.org/ntsb/LAX82DA288

## Sequence of events

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

- Hard landing, landing - flare/touchdown
  - weather condition - unfavorable wind (contributing factor)
  - compensation for wind conditions - improper, pilot in command (cause)
- Nose gear collapsed, landing - flare/touchdown
  - landing gear,nose gear - overload

## Analysis

DURING ARRIVAL, THE PILOT ENTERED THE TRAFFIC PATTERN TO LAND ON RUNWAY 25 WITH A REPORTED WIND FROM THE SOUTHWEST AT 10 KTS. ON HIS FIRST APPROACH, THE PILOT EXPERIENCED A ROUGH RIDE WITH FLUCTUATING AIRSPEED AND RATE OF DESCENT. HE WAS OVERSHOOTING SO HE MADE A GO-AROUND. AFTER A SECOND APPROACH, THE AIRCRAFT TOUCHED DOWN AND STARTED A ROLL-OUT. THE PILOT REPORTED THAT THE PLANE THEN BECAME AIRBORNE AGAIN, AS IF IT HAD ENCOUNTERED A GUST OR WIND SHEAR. SUBSEQUENTLY, THE AIRCRAFT LANDED HARD, SHEARING OFF THE NOSE GEAR.

## Aircraft

- Registration: [N4991F](https://openairdocs.org/aircraft/N4991F), registered now, S/N U206-0691, built 1966 (OpenAirDocs)
- Reported make and model: CESSNA U206B
- Registry model: [Cessna TU206B](https://openairdocs.org/model/cessna-tu206b) (registry code 2073324) (OpenAirDocs)
- Registry engine: [Continental IO-520 series](https://openairdocs.org/engine/continental-io-520-series) (registry code 17032, reciprocating) (OpenAirDocs)
- Category: Airplane
- Serial number: U206-0691
- Engines: CONTINENTAL IO-520A 300 horsepower reciprocating
- Damage: Substantial damage
- Flight: Personal, Part 91
- Operator: Charles L. Butt
- Registered owner: Charles L. Butt
- Departed: MMH, MAMMOTH LAKES, CA
- Destination: GRAND CANYON, AZ
- Flight plan: VFR
- Airport: 017, Nevada County Airpark, runway 25, 3,920 × 50 ft, asphalt

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 48; private; airplane ratings: single-engine land; medical: class 3, valid medical--no waivers/lim.; flight hours: 244 total, 56 in this make and model, 187 as pilot in command

## Weather

- Conditions: Visual (VMC), Day
- Wind: 225° at 10 knots
- Visibility: 15 statute miles
- Temperature: 176 °F
- Altimeter: 29.00 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 19820803034509A](https://openairdocs.org/incident/19820803034509A), Aug 3, 1982: Cessna U206B, Grass Valley, CA, Substantial damage. Ballooned on first landing. Broke off nose wheel fork on second nose first bounce.

## Other investigations on N4991F (2)

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.

- [NTSB ANC05LA133](https://openairdocs.org/ntsb/ANC05LA133), Sep 2, 2005: Cessna 206 (N4991F), Yakutat, AK, substantial damage. Probable cause: The pilot's selection of unsuitable terrain for takeoff, and his failure to maintain adequate airspeed during takeoff initial climb from a remote airstrip, which resulted in the airplane descending…
- [NTSB OAK74FVD08](https://openairdocs.org/ntsb/OAK74FVD08), Sep 3, 1973: Cessna TU206B (N4991F), Livermore, CA, substantial damage

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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