# NTSB ATL97LA020: Lake LA-4-200, N1109L, St. Petersburg, FL, November 27, 1996 - Type: NTSB accident investigation - Classification: Accident · Serious injuries · Limited investigation · Final report - Date: November 27, 1996, 17:13 local (22:13 UTC) - Place: St. Petersburg, FL - Coordinates: 27.819293, -82.679725 (estimated) - Nearby events: https://openairdocs.org/map.md?lat=27.8193&lon=-82.6797&mi=10 - Phase of flight: [Approach](https://openairdocs.org/ntsb-phases/500) (OpenAirDocs' grouping) - Highest injury: Serious injuries - Injuries: 1 serious - Status: Completed, report April 24, 2001 - Report: Approved by Office Director - NTSB case key (mKey): 3809 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=ATL97LA020 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/3809/pdf - Page: https://openairdocs.org/ntsb/ATL97LA020 ## Probable cause Fuel exhaustion for undetermined reasons. ## Sequence of events In NTSB's coding before 2008 (https://www.ntsb.gov/GILS/Documents/codman.pdf). - Loss of engine power(total) - nonmechanical, approach - fluid,fuel - exhaustion (cause) - reason for occurrence undetermined - Forced landing, emergency descent/landing - On ground/water collision with object, emergency descent/landing - object - tree(s) ## Analysis The pilot stated that the engine lost power while on approach to his destination airport, after 2.8 hours of flight. Postaccident investigation revealed the fuel cell to be empty. The pilot had topped off the 40-gallon fuel tank before departure. According to the available performance data for the airplane, as well as the pilot's recent operating experience in the airplane, sufficient fuel should have been aboard the airplane for the 355 nautical mile flight. ## Factual narrative On November 27, 1996, about 1713 eastern standard time, a Lake LA-4-200, N1109L, collided with a tree and the ground during a visual approach to the Albert Whitted Airport, St. Petersburg, Florida. The airplane was operated by the private pilot under the provisions of Title 14 CFR Part 91, and visual flight rules. Visual meteorological conditions prevailed. A flight plan was not filed for the personal flight. The pilot was seriously injured, and the airplane was substantially damaged. Origination of the flight was Berry Hill Airport in Stockbridge, Georgia, at 1425 the same day. When the airplane was about four miles north of the airport, the pilot declared a "MAYDAY" report to the airport tower that he was "going down in the water." The airplane subsequently crashed into a church yard near the airport. The airplane came to rest inverted. The FAA inspector who visited the site reported that there was no fuel, or the odor of fuel, at the impact site. The were no mechanical problems reported by the pilot. According to the pilot, the gas cap on the left wing was not a Lake Aircraft gas cap. Therefore, he believed that fuel siphoned out of the overflow vent. According to Lake Aircraft personnel, fuel could not siphon out of the airplane unless the gas cap was removed and the fuel door was open. The pilot stated that he had calculated his time enroute, along with the amount of fuel the flight would require. He planned for a distance, between Stockbridge and Albert Whitted, of 328 nautical miles (nm), an average ground speed of 129 knots (kts or nm/hr), a time enroute of 2.8 hr., and a fuel flow of 12 gallons per hour (gph). He stated that his calculations left him with a half hour reserve. The pilot believed his airplane to have a fuel capacity of 42 gallons. According to the Lake Aircraft Manual and FAA Type Certificate Data Sheets, the LA-4-200 has a fuel capacity of 40 gallons, all of which is considered to be usable fuel. Given: 0.3 gallon for startup, taxi and runup. 0.1 gallon for combustion heater operation. 4.0 gallons for 20 minutes of climb power (averaging 450 feet per minute to climb from 770 feet msl departure point to 7,500 feet cruise altitude, at 16 gallons per hour) Subtracting the above fuel burn from a full tank leaves 35.5 gallons available. The pilot stated that he had used 24" of manifold pressure and 2400 rpm for the flight, which is approximately 70 percent of maximum power, according to Lycoming power charts available to the pilot for a normally aspirated IO-360 engine. Using the best-economy mixture setting at 70 percent power, approximately 3.67 hours of endurance would remain at top of climb, for a total endurance, including climb, of 4 hours. At best-power mixture settings at a cruise power of 70 percent, approximately 3.16 hours of endurance would remain, for a total endurance, including climb, of 3.49 hours. At 12 gallons per hour, the observed fuel consumption rate cited by the pilot for previous flights, 2.96 hours of endurance would remain, for a total flight endurance, including climb, of 3.29 hours. Total flight time was reported by the pilot as being 2.8 hours. No performance data or fuel consumption data for the on-demand manual-wastegate turbocharger was provided by the manufacturer. The petitioner reported that he had based his flight planning upon a distance of 328 nautical miles between his departure point and destination, as obtained from his GPS receiver. He stated that he flew a direct flight between the two locations of between 328 and 330 miles. According to the DUATS flight planning program, the flight distance using Victor airways is 359.0 nautical miles; the great circle distance (the shortest distance between two points) between the point of departure and destination is 355.4 nautical miles. The pilot stated that he encountered winds aloft of 20 to 25 knots from 020 degrees at 7,500 feet (his cruising altitude for the flight). Both forecast and observed winds aloft reports for the period of this flight are attached to this report. According to those reports, tailwinds existed along the flightpath during the time period of this flight. ## Aircraft - Registration: [N1109L](https://openairdocs.org/deregistered/N1109L-2011-01-03), registration cancelled 2011-01-03, S/N 700, built 1975 (OpenAirDocs) - Reported make and model: Lake LA-4-200 - Registry model: [Consolidated Aeronautics LAKE LA-4](https://openairdocs.org/model/consolidated-aeronautics-lake-la-4) (registry code 2400102) (OpenAirDocs) - Registry engine: [Lycoming I0360 series](https://openairdocs.org/engine/lycoming-i0360-series) (registry code 41515, reciprocating) (OpenAirDocs) - Category: Airplane - Serial number: 700 - Airframe hours: 998 - Engines: Lycoming IO-360-A1B 200 horsepower reciprocating - Damage: Substantial damage - Flight: Business, Part 91 - Operator: Robert T. Wagner - Registered owner: Real Deals Inc. Of Tampa - Airworthiness certificate: Standard, Normal - Last inspection: Annual, January 2, 1996, 107 hours before - Departed: 4A0, STOCKBRIDGE, GA - Destination: SPG, ALBERT WHITTED, FL - Airport: SPG, Albert Whitted, runway 6, 3,677 × 75 ft, asphalt ## Flight crew As NTSB recorded them. NTSB leaves out names. - Pilot; age 39; private; airplane ratings: single-engine sea, single-engine land; medical: class 3, valid medical--no waivers/lim.; seat: left; flight hours: 500 total ## Weather - Conditions: Visual (VMC), Day - Wind: 50° at 16 knots, gusting 22 - Visibility: 15 statute miles - Lowest ceiling: none - Temperature: 72 °F, dew point 57 °F - Altimeter: 30.00 inHg - Observed at: SPG, 3 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 19961127036769A](https://openairdocs.org/incident/19961127036769A), Nov 27, 1996: Conaer LA4200, St Petersburg, FL, Substantial damage. Lost power on approach to airport. Struck trees in church yard. Fuel tanks were empty. Misfigured time and fuel. ## Other investigations on N1109L (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 FTW76FRA34](https://openairdocs.org/ntsb/FTW76FRA34), Apr 22, 1976: Lake LA-4 (N1109L), Baytown, TX, 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. --- 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.