# NTSB DFW08LA095: Hawker Beechcraft G36, N984W, El Dorado, KS, April 9, 2008 - Type: NTSB accident investigation - Classification: Accident · No injuries · Limited investigation · Final report - Date: April 9, 2008, 13:25 local (18:25 UTC) - Place: El Dorado, KS - Coordinates: 37.941944, -96.838333 - Nearby events: https://openairdocs.org/map.md?lat=37.9419&lon=-96.8383&mi=10 - Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping) - Defining event: [Enroute-climb to cruise: Loss of engine power (total)](https://openairdocs.org/ntsb-events/341) - Highest injury: No injuries - Injuries: 1 uninjured - Status: Completed, report January 29, 2009 - Report: Approved by Office Director - Parties: Teledyne Continental Motors, Hawker Beechcraft Corporation, Federal Aviation Administration - NTSB case key (mKey): 67796 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=DFW08LA095 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/67796/pdf - Page: https://openairdocs.org/ntsb/DFW08LA095 ## Probable cause The improper installation of the fuel manifold valve's brass plug. Contributing to the accident was the unsuitable landing area for the forced landing. ## Findings NTSB's coded findings; those marked are part of the probable cause. - [Fuel system: fuel distribution](https://openairdocs.org/ntsb-findings/01022820): Aircraft › Aircraft systems · Incorrect service/maintenance (probable cause); cases with it: [All aircraft, 141 cases](https://openairdocs.org/ntsb-findings/01022820/cases.md) - [Object/animal/substance: fence/fence post](https://openairdocs.org/ntsb-findings/03022047): Environmental issues › Physical environment · Effect on equipment (probable cause); cases with it: [All aircraft, 313 cases](https://openairdocs.org/ntsb-findings/03022047/cases.md) - [Maintenance: installation](https://openairdocs.org/ntsb-findings/02062035): Personnel issues › Task performance · Other (probable cause); cases with it: [All aircraft, 371 cases](https://openairdocs.org/ntsb-findings/02062035/cases.md) ## Sequence of events The events NTSB coded, in order, by phase of flight. The defining event best describes what happened. - [Prior to flight: Aircraft maintenance event](https://openairdocs.org/ntsb-events/040); cases with it: [All aircraft, 484 cases](https://openairdocs.org/ntsb-events/040/sequence.md) - [Enroute-climb to cruise: Fuel starvation](https://openairdocs.org/ntsb-events/191); cases with it: [All aircraft, 733 cases](https://openairdocs.org/ntsb-events/191/sequence.md) - [Enroute-climb to cruise: Loss of engine power (total)](https://openairdocs.org/ntsb-events/341) (defining event); cases with it: [All aircraft, 3,820 cases](https://openairdocs.org/ntsb-events/341/sequence.md) - [Landing: Off-field or emergency landing](https://openairdocs.org/ntsb-events/440); cases with it: [All aircraft, 3,365 cases](https://openairdocs.org/ntsb-events/440/sequence.md) - [Landing-landing roll: Collision with terr/obj (non-CFIT) ](https://openairdocs.org/ntsb-events/470); cases with it: [All aircraft, 10,189 cases](https://openairdocs.org/ntsb-events/470/sequence.md) ## Analysis While climbing through 5,000 feet on the airplane's first post production test flight, a total loss of engine power was experienced. Following an unsuccessful engine restart attempt, the pilot elected to perform a forced landing on a nearby road. During the landing roll out the airplane's right wing sustained structural damage when it contacted a fence post. The airplane came to rest in an upright position and the pilot was able to exit the airplane unassisted. An examination of the engine revealed that a brass plug had fallen out of the fuel manifold valve, which resulted in the loss of engine power. The threads on the brass plug and in the fuel manifold valve were found unremarkable, suggesting that the brass plug was not sufficiently torqued at the time it was last installed. A determination as to the plug's last installation could not be established. ## Factual narrative On April 9, 2008, about 1325 central daylight time, a single-engine Hawker Beechcraft G36 airplane, N984W, was substantially damaged during a forced landing following a loss of engine power near El Dorado, Kansas. The airline transport pilot, the sole occupant of the airplane, was not injured. The airplane was registered to and operated by Hawker Beechcraft Corporation, of Wichita, Kansas. Visual meteorological condition prevailed and no flight plan was filed for the 14 Code of Federal Regulations part 91 production test flight. The local flight departed the Beech Factory Airport (BEC), Wichita, Kansas at approximately 1310 for its maiden flight. The pilot reported that while climbing through 5,000 feet, the airplane experienced a total loss of engine power. Following an unsuccessful engine restart attempt, the pilot elected to perform a forced landing on a nearby road. During the landing roll out the airplane's right wing sustained structural damage when it contacted a fence post. The airplane came to rest in an upright position and the pilot was able to exit the airplane unassisted. On April 11, 2008, representatives from Hawker Beechcraft Corporation and Teledyne Continental Motors examined the engine with oversight provided by the Federal Aviation Administration. The examination revealed that brass plug part number 629518-1 had fallen out of the fuel manifold valve which resulted in the loss of engine power. The threads on the brass plug and in the fuel manifold valve were found unremarkable, suggesting that the brass plug was not sufficiently torqued at the time it was last installed. A determination as to the brass plug's last installation could not be established. ## Aircraft - Registration: N984W (not matched to a registry record) - Reported make and model: HAWKER BEECHCRAFT CORP G36 - Category: Airplane - Serial number: E-3849 - Engines: Teledyne Continental IO-550 300 horsepower reciprocating - Damage: Substantial damage - Flight: Flight test, Part 91 - Operator: Hawker Beechcraft Corp - Registered owner: Hawker Beechcraft Corp - Airworthiness certificate: Special, Special flight (Special) - Departed: BEC, WICHITA, KS ## Flight crew As NTSB recorded them. NTSB leaves out names. - Pilot; age 35; injuries: none; airline transport, flight instructor; airplane ratings: multi-engine land, single-engine land; instrument ratings: airplane; medical: class 2, without waivers/limitations; last flight review April 2, 2008; seat: left; flight hours: 7,100 total, 63 in this make and model, 6,600 as pilot in command, 152 in the last 90 days, 50 in the last 30 days, 4 in the last 24 hours ## Weather - Conditions: Visual (VMC), Day - Wind: 90° at 12 knots - Visibility: 10 statute miles - Lowest ceiling: none - Temperature: 46 °F, dew point 36 °F - Altimeter: 30.00 inHg - Observed at: AAO, 24 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 20080409014459A](https://openairdocs.org/incident/20080409014459A), Apr 9, 2008: Raythn G36, El Dorado, KS, Substantial damage. (-23) On 04/09/2008, a Hawker Beechcraft first test flight of aircraft E-3849, a be 36 bonanza, N984W, departed runway 36 at kbec. The pilot departed traffic… 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.