# NTSB FTW99LA180: Bellanca BL17-30A, N9520E, Brownfield, TX, July 6, 1999 - Type: NTSB accident investigation - Classification: Accident · Minor injuries · Limited investigation · Final report - Date: July 5, 1999, 19:00 local (Jul 6, 1999, 00:00 UTC) - Place: Brownfield, TX - Coordinates: 33.169647, -102.270629 (estimated) - Nearby events: https://openairdocs.org/map.md?lat=33.1696&lon=-102.2706&mi=10 - Phase of flight: [Approach](https://openairdocs.org/ntsb-phases/500) (OpenAirDocs' grouping) - Highest injury: Minor injuries - Injuries: 1 minor - Status: Completed, report December 4, 2000 - Report: Approved by Office Director - NTSB case key (mKey): 46703 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=FTW99LA180 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/46703/pdf - Page: https://openairdocs.org/ntsb/FTW99LA180 ## Probable cause The pilot's inadvertent stall while attempting to clear powerlines. Factors were the loss of engine power due to fuel starvation and the pilot's improper use of the fuel tank selector. ## Sequence of events In NTSB's coding before 2008 (https://www.ntsb.gov/GILS/Documents/codman.pdf). - Loss of engine power(total) - nonmechanical, approach - vfr pattern - final approach - fluid,fuel - starvation (contributing factor) - fuel tank selector position - improper, pilot in command (contributing factor) - checklist - not followed, pilot in command - Forced landing, emergency descent/landing - Loss of control - in flight, emergency descent/landing - object - wire,transmission - maneuver to avoid obstructions - performed, pilot in command - stall - inadvertent, pilot in command (cause) - In flight collision with terrain/water, descent - uncontrolled ## Analysis The airplane stalled as the pilot pulled up to clear powerlines following a loss of engine power on final approach. The left wing of the airplane dropped abruptly, and the airplane nosed down impacting the ground in a left wing low attitude, approximately 100 yards short of the landing threshold. The pilot estimated that he had approximately 40 gallons of fuel prior to departing on the 35-nautical mile flight. The pilot reported to a local law enforcement officer that the engine lost power on final approach and 'he was not quick enough to switch the fuel selector to the other tank.' Examination of the fuel system by an FAA inspector revealed that the airplane was equipped with an extended range fuel system which encompassed a total of 7 fuel cells, with 3 cells in each wing and a fuselage tank aft of the baggage compartment. Most of the fuel cells were compromised during impact and evidence of spilled fuel was found on the ground. ## Factual narrative On July 5, 1999, at 1900 central daylight time, a Bellanca BL17-30A airplane, N9520E, was substantially damaged when it collided with terrain while on final approach to the Terry County Airport, near Brownfield, Texas. The non-instrument rated private pilot, sole occupant of the airplane, sustained minor injuries. The airplane was registered to and operated by the pilot. Visual meteorological conditions prevailed for the Title 14 CFR Part 91 personal flight. The 35-nautical mile flight originated from the Lubbock International Airport, near Lubbock, Texas, approximately 1845. The pilot reported to a local law enforcement officer, who responded to the accident site, that the engine lost power on final approach, and "he was not quick enough to switch the fuel selector to the other tank." The officer reported that the wing tanks were compromised during impact with the ground, and he found evidence that some fuel spilled on the ground. A pilot, who witnessed the accident at the Terry County Airport, stated that he observed the airplane stall as it cleared the powerlines at the approach end of runway 20. The witness reported that "the left wing of the airplane dropped abruptly and the airplane nosed down impacting the ground in a left wing low attitude, approximately 100 yards short of the landing threshold." Examination of the airplane by the airport manager revealed that both wings were "destroyed by the impact with the ground." Additionally, the 3-bladed propeller separated from the engine. There was no fire. Examination of the fuel system by an FAA inspector revealed that the airplane was equipped with an extended range fuel system which encompassed a total of 7 fuel cells. There were 3 cells in each wing and a fuselage tank aft of the baggage compartment. In the recommendation block of the enclosed NTSB Form 6120.1/2, the pilot stated that the accident could have been prevented by "better fuel management" and "better attention to all gauges (fuel pressure, manifold pressure) to possibly be aware sooner of a possible problem." The pilot further stated that he estimated that he had approximately 40 gallons of fuel aboard the airplane prior to his departure from Lubbock. ## Aircraft - Registration: [N9520E](https://openairdocs.org/deregistered/N9520E-2012-08-27), registration cancelled 2012-08-27, S/N 76-30805, built 1975 (OpenAirDocs) - Reported make and model: Bellanca BL17-30A - Registry model: [Bellanca 17-30A](https://openairdocs.org/model/bellanca-17-30a) (registry code 1220433) (OpenAirDocs) - Registry engine: [Continental IO-520 series](https://openairdocs.org/engine/continental-io-520-series) (registry code 17032, reciprocating) (OpenAirDocs) - Category: Airplane - Serial number: 76-30805 - Airframe hours: 2534 - Engines: Continental IO-520-D 300 horsepower reciprocating - Damage: Substantial damage - Flight: Personal, Part 91 - Registered owner: Paul M. Willis - Airworthiness certificate: Standard, Normal - Last inspection: Annual, December 14, 1998, 54 hours before - Departed: LBB, LUBBOCK, TX - Destination: Q26 - Airport: Q26, Terry County Airport, runway 20, 5,218 × 75 ft, asphalt ## Flight crew As NTSB recorded them. NTSB leaves out names. - Pilot; age 29; private; airplane ratings: single-engine land; medical: class 3, valid medical--w/ waivers/lim; seat: left; flight hours: 278 total, 192 in this make and model, 22 in the last 90 days, 1 in the last 24 hours ## Weather - Conditions: Visual (VMC), Day - Wind: 180° at 17 knots, gusting 23 - Visibility: 10 statute miles - Lowest ceiling: none - Temperature: 88 °F, dew point 61 °F - Altimeter: 30.00 inHg - Observed at: LBB, 35 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 19990705008279A](https://openairdocs.org/incident/19990705008279A), Jul 5, 1999: Blanca 1730A, Brownfield, TX, Substantial damage. (Tty) acft lost power while on short final and struck the ground 100 yards short of the rwy. Other circumstances are unknown. (.19) on July 5, 1999, at 1900… 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.