# NTSB FTW98LA374: Beech B36TC, N4BA, Pinedale, WY, August 5, 1998 - Type: NTSB accident investigation - Classification: Accident · No injuries · Limited investigation · Final report - Date: August 5, 1998, 11:30 local (17:30 UTC) - Place: Pinedale, WY - Coordinates: 42.859676, -109.859062 (estimated) - Nearby events: https://openairdocs.org/map.md?lat=42.8597&lon=-109.8591&mi=10 - Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping) - Highest injury: No injuries - Injuries: 1 uninjured - Status: Completed, report February 16, 2001 - Report: Approved by Office Director - NTSB case key (mKey): 43777 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=FTW98LA374 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/43777/pdf - Page: https://openairdocs.org/ntsb/FTW98LA374 ## Probable cause The pilot not following his Pilot Operating checklist procedures. A factor was the aborted landing which interfered with the pilot's normal traffic pattern habit. ## Sequence of events In NTSB's coding before 2008 (https://www.ntsb.gov/GILS/Documents/codman.pdf). - Wheels up landing, landing - procedures/directives - not followed, pilot in command (cause) - habit interference, pilot in command (contributing factor) ## Analysis The pilot reported that he flew a 'traffic pattern' for a landing and when he turned final, another airplane taxied onto the active runway in front of him. He aborted the landing and flew a '360 degree track' for another landing attempt. The pilot said that on his second landing attempt, he forgot to put the landing gear down and he subsequently landed with the wheels up. ## Factual narrative On August 5, 1998, approximately 1130 mountain daylight time, a Beech B36TC, N4BA, was substantially damaged during a wheels-up landing at Pinedale Airport, Pinedale, Wyoming. The commercial pilot, the sole occupant in the airplane, was not injured. The airplane was operated by Sublette Investment Co. Inc. under Title 14 CFR Part 91. Visual meteorological conditions prevailed for the local area personal flight which originated approximately one hour before the accident. No flight plan was filed. The pilot reported that he flew a "traffic pattern" for a landing and when he turned final, another airplane taxied onto the active runway in front of him. He aborted the landing and flew a "360 degree track" for another landing attempt. The pilot said that on his second landing attempt, he forgot to put the landing gear down. The left and right engine keels were bent, and a stringer and a rib were damaged. ## Aircraft - Registration: [N4BA](https://openairdocs.org/deregistered/N4BA-2014-10-27), registration cancelled 2014-10-27, S/N EA-356, built 1983 (OpenAirDocs) - Reported make and model: Beech B36TC - Registry model: [Beech B36TC](https://openairdocs.org/model/beech-b36tc) (registry code 1151609) (OpenAirDocs) - Registry engine: [Continental TSIO-520 series](https://openairdocs.org/engine/continental-tsio-520-series) (registry code 17040, reciprocating) (OpenAirDocs) - Category: Airplane - Serial number: EA-356 - Engines: Continental TSIO-520 285 horsepower reciprocating - Damage: Substantial damage - Flight: Personal, Part 91 - Operator: Vernon T. Delgado - Registered owner: Sublette Investment Co Inc. - Airworthiness certificate: Standard, Utility - Last inspection: Annual, September 30, 1997 - Departed: PNA - Airport: PNA, Pinedale Airport, runway 29, 7,100 × 100 ft, asphalt ## Flight crew As NTSB recorded them. NTSB leaves out names. - Pilot; age 66; commercial; airplane ratings: single-engine land, multi-engine land; instrument ratings: airplane; medical: class 3, valid medical--w/ waivers/lim; seat: left; flight hours: 3,141 total, 2,000 in this make and model, 3,141 as pilot in command, 1 in the last 90 days, 1 in the last 30 days, 1 in the last 24 hours ## Weather - Conditions: Visual (VMC), Day - Wind: 190° at 4 knots - Visibility: 10 statute miles - Lowest ceiling: none - Temperature: 75 °F, dew point 48 °F - Altimeter: 30.00 inHg - Observed at: BPI, 26 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). - [Incident 19980805029099I](https://openairdocs.org/incident/19980805029099I), Aug 5, 1998: Beech B36TC, Pinedale, WY, Minor damage. When pilot was on downwind leg for landing, he saw aircraft on runway for departure. He decided to make a go around, retracted the landing gear, and on the… ## Other investigations on N4BA (1) 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 CEN10FA180](https://openairdocs.org/ntsb/CEN10FA180), Apr 1, 2010: Beech B36TC (N4BA), Dayton, OH, destroyed, 2 fatal. Probable cause: The complete loss of engine power due to failure of the No. 1 main bearing, and the secondary failure of a crankcase through-bolt and the fuel pump drive coupling. Contributing to the accident was… 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. --- OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.