# NTSB CHI99FA263: Underwood Brokaw Bullet, N331TB, Oshkosh, WI, July 29, 1999

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Field investigation · Final report
- Date: July 29, 1999, 12:34 local (17:34 UTC)
- Place: Oshkosh, WI
- Location: 43.9844° N, 88.5570° W: Placed by OpenAirDocs at WITTMAN RGNL (OSH), within about a mile (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=43.9844&lon=-88.5570&mi=10
- Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 2 uninjured
- Status: Completed, report June 23, 2000
- Report: Approved by Office Director
- NTSB case key (mKey): 46883
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=CHI99FA263
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/46883/pdf
- Page: https://openairdocs.org/ntsb/CHI99FA263

## Probable cause

the pilot failed to maintain directional control of the airplane.

## Sequence of events

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

- On ground/water encounter with terrain/water, landing - roll
  - weather condition - crosswind
  - directional control - not maintained, pilot in command (cause)
  - landing gear,main gear - collapsed
  - landing gear,nose gear - collapsed

## Analysis

The pilot reported that he landed on runway 18 and the winds were from the west at approximately 15 knots.  He reported the right wing 'picked up' and the airplane '...departed the runway to the left and lost control... .' The airplane's nose gear collapsed and the left wing spar was damaged.

## Factual narrative

On July 29, 1999, at 1234 central daylight time, an experimental Underwood Brokaw Bullet, N331TB, was substantially damaged during landing roll.  The 14 CFR Part 91 flight had departed the Wittman Regional Airport, Oshkosh, Wisconsin, on a local flight and was landing on runway 18 for a full stop landing.  The airplane veered to the left after touchdown and went off the runway.  The winds were from 260 degrees at 11 knots with gusts to 17 knots.  The private pilot and the passenger were not injured.  Visual meteorological conditions prevailed.  No flight plan was filed, but the airplane was a scheduled fly-by at the Oshkosh Air Show.

The pilot reported that he landed on runway 18 and the winds were from the west at approximately 15 knots.  He reported the right wing "picked up" and the airplane "...departed the runway to the left and lost control... ."  The airplane's nose gear collapsed and the left wing spar was damaged.

## Aircraft

- Registration: [N331TB](https://openairdocs.org/deregistered/N331TB-2015-05-19), registration cancelled 2015-05-19, S/N 2GTP, built 1998 (OpenAirDocs)
- Reported make and model: Underwood BROKAW BULLET (BROKAW BUL)
- Registry model: [Underland G/Finstrom D BROKAW BULLET](https://openairdocs.org/model/underland-g-finstrom-d-brokaw-bullet) (registry code 05606Y5) (OpenAirDocs)
- Registry engine: [Amateur-built UNKNOWN ENG](https://openairdocs.org/engine/amateur-built-unknown-eng) (registry code 99999) (OpenAirDocs)
- Category: Airplane, amateur-built
- Serial number: 2GTP
- Airframe hours: 32
- Engines: Garrett TPE-331-25 575 horsepower turbo prop
- Damage: Substantial damage
- Flight: Personal, Part 91
- Registered owner: Gene Underland
- Airworthiness certificate: Special, Experimental (Special)
- Last inspection: Unknown, May 30, 1999, 32 hours before
- Departed: OSH, WI
- Destination: OSH
- Airport: OSH, Wittman Regional, runway 18, 8,001 × 150 ft, asphalt

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 56; private; airplane ratings: single-engine land; instrument ratings: airplane; medical: class 3, valid medical--w/ waivers/lim; seat: front; flight hours: 1,000 total, 32 in this make and model, 42 in the last 90 days, 25 in the last 30 days, 1 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: 260° at 11 knots, gusting 17
- Visibility: 10 statute miles
- Lowest ceiling: none
- Temperature: 88 °F, dew point 75 °F
- Altimeter: 29.00 inHg
- Observed at: OSH

## 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 19990729010119A](https://openairdocs.org/incident/19990729010119A), Jul 29, 1999: Oshkosh, WI, Substantial damage. On landing runway 18R at wittman field, the aircraft touched down first on the left gear, then bounced on the right gear. Aircraft then exited the runway to…

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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