# NTSB MIA01TA237: Aerofab Lake Seawolf, N65RF, Frostproof, FL, November 16, 2000 - Type: NTSB accident investigation - Classification: Accident · No injuries · Final report - Date: November 16, 2000, 11:20 local (16:20 UTC) - Place: Frostproof, FL - Coordinates: 27.784444, -81.636947 - Nearby events: https://openairdocs.org/map.md?lat=27.7844&lon=-81.6369&mi=10 - Phase of flight: [Takeoff](https://openairdocs.org/ntsb-phases/300) (OpenAirDocs' grouping) - Highest injury: No injuries - Injuries: 2 uninjured - Status: Completed, report November 25, 2003 - Report: Approved by Office Director - Parties: NOAA/AOC, FAA FSDO - NTSB case key (mKey): 57981 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=MIA01TA237 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/57981/pdf - Page: https://openairdocs.org/ntsb/MIA01TA237 ## Probable cause The failure of the instructor pilot and dual student to begin the water takeoff with adequate clearance from the lake shore for the dual student to complete the takeoff and the failure of the instructor pilot to recognize in a timely manner during the takeoff that there was not adequate clearance from the lake shore to complete the takeoff and abort the takeoff, resulting in the airplane colliding with the terrain near the lake shore and coming to rest in a field about 900 feet inland from the lake shore. ## Sequence of events In NTSB's coding before 2008 (https://www.ntsb.gov/GILS/Documents/codman.pdf). - Overrun, takeoff - distance - inadequate, flightcrew (cause) - supervision - inadequate, pilot in command(cfi) (cause) - aborted takeoff - not performed, pilot in command(cfi) (cause) - In flight collision with terrain/water, takeoff - terrain condition - dirt bank/rising embankment - terrain condition - open field ## Analysis The aircraft operator reported that after takeoff from MacDill AFB, the flight proceeded to Lake Hancock, where four takeoffs and landings were performed. The flight then proceeded to Bartow, Florida, where the airplane was refueled. The flight departed Bartow at 1100 and proceeded to Lake Buffum. A landing was performed on Lake Buffum followed by a short back taxi prior to commencing takeoff. The instructor pilot took control of the airplane from the dual student during the takeoff run as the airplane approached the end of the lake. The airplane was flying in ground effect when it crossed the edge of the lake, skid 60 feet up a gradual grass slope and launched approximately 4 feet off the ground. The airplane flew 349 feet at this altitude, clearing 2 barbed wire fences and crossing under power lines. The airplane clipped the top of a third barbed wire fence. The airplane started to lightly drag its tail traveling for 152 feet in this manner. The airplane got back into the air for 130 feet in time to clear a 56 foot wide ditch. The instructor pilot, seeing a flat field ahead and realizing the airplane was not going to climb, cut the power and set the airplane down. The airplane skid on its belly for 251 feet. The wave height in the lake was estimated at 10 inches, the wind was out of the southeast at 12 knots, and the takeoff was to the east-southeast. The aircraft operator reported they found no mechanical problems with the aircraft structure, flight controls, engine, or propeller after the accident. ## Factual narrative On November 16, 2000, about 1120 eastern standard time, an Aerofab, Inc. Lake Seawolf, N65RF, registered to and operated by the United States Department of Commerce, National Oceanic and Atmospheric Administration, collided with the bank of the lake during takeoff from Lake Buffum, Frostproof, Florida, while on 14 CFR Part 91 public-use flight for instructional purposes. Visual meteorological conditions prevailed at the time and a visual flight rules flight plan was filed. The airplane received substantial damage and the airline transport-rated instructor pilot and airline transport-rated dual student were not injured. The flight originated from MacDill Air Force Base(AFB), Florida, the same day about 0848. The aircraft operator reported that after takeoff from MacDill AFB, the flight proceeded to Lake Hancock, where four takeoffs and landings were performed. The flight then proceeded to Bartow, Florida, where the airplane was refueled. The flight departed Bartow at 1100 and proceeded to Lake Buffum. A landing was performed on Lake Buffum followed by a short back taxi prior to commencing takeoff. The instructor pilot took control of the airplane from the dual student during the takeoff run as the airplane approached the end of the lake. The airplane was flying in ground effect when it crossed the edge of the lake, skid 60 feet up a gradual grass slope and launched approximately 4 feet off the ground. The airplane flew 349 feet at this altitude, clearing two barbed wire fences and crossing under power lines. The airplane clipped the top of a third barbed wire fence. The airplane started to lightly drag its tail traveling for 152 feet in this manner. The airplane got back into the air for 130 feet in time to clear a 56-foot-wide ditch. The instructor pilot, seeing a flat field ahead and realizing the airplane was not going to climb, cut the power and set the airplane down. The airplane skid on its belly for 251 feet. The wave height in the lake was estimated at 10 inches, the wind was out of the southeast at 12 knots, and the takeoff was to the east-southeast. The aircraft operator reported they found no mechanical problems with the aircraft structure, flight controls, engine, or propeller after the accident. The accident was reported to the NTSB by NOAA on the day of the accident and NOAA later reported the damage to the airplane was estimated to be between $50,000 and $90,000. At that time the NTSB investigator believed the airplane had received minor damage and the occurrence was classified as an incident and an investigation was not initiated by NTSB. On September 22, 2003, NOAA forwarded photographs of the damage received by the airplane to NTSB and requested that NTSB investigate the occurrence. After review of the photographs, the NTSB classified the occurrence as an accident and began an investigation. ## Aircraft - Registration: N65RF (not matched to a registry record) - Reported make and model: Aerofab Inc. Lake Seawolf - Category: Airplane - Serial number: 127 - Airframe hours: 1255 - Engines: Lycoming TIO-540-AA1AD 290 horsepower reciprocating - Damage: Substantial damage - Flight: Instructional, Public use - Registered owner: U. S. Department of Commerce, NOAA - Airworthiness certificate: Special, Special flight (Special) - Last inspection: 100 hour, July 13, 2000, 20 hours before - Departed: BOW, Bartow, FL - Destination: KMCF, MacDill AFB, FL - Flight plan: VFR ## Flight crew As NTSB recorded them. NTSB leaves out names. - Pilot; age 49; injuries: none; commercial, flight instructor, airline transport, flight engineer; airplane ratings: single-engine land, multi-engine land, single-engine sea; instrument ratings: airplane; medical: class 1, valid medical--w/ waivers/lim; last flight review July 1, 2000; seat: right; toxicology performed; flight hours: 10,412 total, 132 in this make and model, 8,500 as pilot in command, 80 in the last 90 days, 24 in the last 30 days, 5 in the last 24 hours - Student pilot; age 38; injuries: none; airline transport, flight instructor, commercial; airplane ratings: multi-engine land, single-engine sea, single-engine land; instrument ratings: airplane; medical: class 2, valid medical--no waivers/lim.; last flight review January 1, 2000; seat: left; toxicology performed; flight hours: 4,200 total, 20 in this make and model, 3,800 as pilot in command, 20 in the last 90 days, 10 in the last 30 days, 5 in the last 24 hours ## Weather - Conditions: Visual (VMC), Day - Wind: 130° at 12 knots - Visibility: 10 statute miles - Lowest ceiling: none - Temperature: 72 °F, dew point 55 °F - Altimeter: 30.10 inHg - Observed at: BOW, 13 nm away 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.