# NTSB CHI93LA309: Taylorcraft L2B, N3113S, Friedenberg, MN, August 5, 1993 - Type: NTSB accident investigation - Classification: Accident · Minor injuries · Limited investigation · Final report - Date: August 5, 1993, 08:15 local (13:15 UTC) - Place: Friedenberg, MN - Coordinates: 47.050067, -92.069869 (estimated) - Nearby events: https://openairdocs.org/map.md?lat=47.0501&lon=-92.0699&mi=10 - Phase of flight: [Initial climb](https://openairdocs.org/ntsb-phases/350) (OpenAirDocs' grouping) - Highest injury: Minor injuries - Injuries: 1 minor - Status: Completed, report July 25, 1994 - Report: Approved by Office Director - NTSB case key (mKey): 9272 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=CHI93LA309 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/9272/pdf - Page: https://openairdocs.org/ntsb/CHI93LA309 ## Probable cause the pilot's decision to fly the airplane with know deficiencies which resulted in a restricted fuel flow to the engine. ## Sequence of events In NTSB's coding before 2008 (https://www.ntsb.gov/GILS/Documents/codman.pdf). - Loss of engine power(partial) - nonmechanical, takeoff - initial climb - fuel system,selector/valve - unreliable - operation with known deficiencies in equipment - performed, pilot in command (cause) - fluid,fuel - starvation - Forced landing, descent - emergency - In flight collision with object, descent - emergency - unsuitable terrain or takeoff/landing/taxi area, pilot in command - object - tree(s) - In flight collision with terrain/water, descent - uncontrolled ## Analysis THE PILOT REPORTED HE HAD PERFORMED MAINTENANCE ON THE AIRPLANE THE DAY BEFORE THE ACCIDENT. DURING THE MAINTENANCE ACTIVITY HE STATED HIS SHOULDER HAD BRUSHED AGAINST THE HEADER FUEL TANK FUEL SUPPLY VALVE. HE STATED HE DID NOT BELIEVE IT WAS IMPORTANT BECAUSE THE VALVE'S COCKPIT CONTROL HAD A '...LITTLE PLAY IN IT.' SHORTLY AFTER TAKEOFF THE AIRPLANE'S ENGINE STOPPED RUNNING TWICE. AFTER THE SECOND STOPPAGE, THE PILOT DECIDED TO SHUT THE MAGNETOS OFF AND PERFORM A FORCED LANDING INTO A SWAMP. ## Factual narrative On August 5, 1993, at 0815 central daylight time (CDT), a Taylorcraft L2B, N3113S, registered to Russell R. Johnson of Duluth, Minnesota, and piloted by a private pilot, was substantially damaged when it collided with trees and swampy terrain during a forced landing. Visual meteorological conditions prevailed at the time of the accident. The personal 14 CFR Part 91 flight was not operating under a flight plan. The pilot reported minor injuries. The flight originated from a restricted landing area near Friedenberg, Minnesota, at 0810 CDT. The pilot stated he performed a run-up and began the takeoff shortly thereafter. Once the airplane was approximately five feet above the runway, in level flight, the engine stopped running for a short time according to the pilot. The engine began to run at what the pilot referred to as takeoff power while flying down the runway. He said the burst of power was enough to get the airplane over the trees. As the airplane was passing over the trees, the pilot said the engine stopped running a second time. He said he decided to land in the swamp because there were trees all around him. During the descent into the swamp, the pilot stated the airplane's right wing tip struck a tree causing the airplane to nose over into the swamp. The pilot reported the right wing spar was broken at the fuselage attach fitting, the right rear wing strut was bent, right wing tip bow was bent, and the right landing gear had crushed. The pilot's written statement included with NTSB Form 6120.1/2 revealed the airplane's engine had "...stalled..." after approximately 10 to 15 seconds of flight following takeoff. The pilot stated the engine had "...another burst of full power near the end of runway @ 30' above trees at this point." After the engine power loss, the pilot stated he shut the magnetos off and planned for a forced landing in the swamp. During an interview with the pilot it was revealed he had performed maintenance on the airplane the day before the accident. He stated he had installed insulation under the fuselage header fuel tank. During this activity, he stated his shoulder brushed against the header tank fuel valve. He said he did not believe it was enough to cause any problems since the valve's cockpit control had a "...little play in it." ## Aircraft - Registration: [N3113S](https://openairdocs.org/aircraft/N3113S), registered now, S/N 4960 (OpenAirDocs) - Reported make and model: TAYLORCRAFT L2B - Registry model: [Taylorcraft / Johnson L2B](https://openairdocs.org/model/taylorcraft-johnson-l2b) (registry code 8850411) (OpenAirDocs) - Category: Airplane - Airframe hours: 2041 - Engines: CONTINENTAL A-65-8 65 horsepower reciprocating - Damage: Substantial damage - Flight: Personal, Part 91 - Operator: Russell R. Johnson - Registered owner: Russell R. Johnson - Airworthiness certificate: Standard, Normal - Last inspection: Annual, July 20, 1993, 7 hours before ## Flight crew As NTSB recorded them. NTSB leaves out names. - Pilot; age 66; private; airplane ratings: single-engine land; medical: expired; seat: front; flight hours: 1,500 total, 6 in this make and model ## Weather - Conditions: Visual (VMC), Day - Visibility: 10 statute miles - Lowest ceiling: 2,000 ft overcast - Temperature: 61 °F, dew point 45 °F ## 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 19930805041849A](https://openairdocs.org/incident/19930805041849A), Aug 5, 1993: Piper L21B, Friedenberg, MN, Substantial damage. Engine quit on climbout. Settled into a swamp. Had accidently bumped fuel selector out of dente during maintenance. 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.