# NTSB FTW99LA088: Piper J3C-65, N92350, Denton, TX, March 1, 1999 - Type: NTSB accident investigation - Classification: Accident · Minor injuries · Limited investigation · Final report - Date: March 1, 1999, 15:15 local (21:15 UTC) - Place: Denton, TX - Coordinates: 33.209823, -97.060668 (estimated) - Nearby events: https://openairdocs.org/map.md?lat=33.2098&lon=-97.0607&mi=10 - Phase of flight: [Initial climb](https://openairdocs.org/ntsb-phases/350) (OpenAirDocs' grouping) - Highest injury: Minor injuries - Injuries: 1 minor, 1 uninjured - Status: Completed, report September 7, 2000 - Report: Approved by Office Director - NTSB case key (mKey): 45817 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=FTW99LA088 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/45817/pdf - Page: https://openairdocs.org/ntsb/FTW99LA088 ## Probable cause The total loss of engine power on takeoff resulting from the failure of an incorrect throttle control cable clamp, which was installed by an unknown person. A factor was the lack of suitable terrain for the forced landing. ## Sequence of events In NTSB's coding before 2008 (https://www.ntsb.gov/GILS/Documents/codman.pdf). - Loss of engine power(total) - mech failure/malf, takeoff - initial climb - miscellaneous,bolt/nut/fastener/clamp/spring - incorrect (cause) - maintenance,installation - improper, unknown (cause) - miscellaneous,bolt/nut/fastener/clamp/spring - failure,total (cause) - throttle/power lever,cable - inoperative - Forced landing, emergency landing after takeoff - In flight collision with terrain/water, emergency landing - terrain condition - none suitable (contributing factor) - maneuver to avoid obstructions - performed, pilot in command ## Analysis The airplane impacted terrain during a forced landing following a total loss of engine power on takeoff. The airline transport pilot receiving instruction was on the controls of the airplane for the takeoff. At an altitude of approximately 100 feet, the engine lost power, and the certified flight instructor took control. The flight instructor turned the airplane left to avoid a steel rail fence at the end of the runway. During the turn, the left wing tip struck the ground, and the airplane turned 180 degrees and came to rest. A mechanic, who examined the airplane, attributed the loss of engine power to a broken throttle control cable clamp. The broken clamp was made of aluminum; however, a steel clamp was specified by the airframe manufacturer. ## Factual narrative On March 1, 1999, at 1515 central standard time, a Piper J3C-65 airplane, N92350, sustained substantial damage during a forced landing following a loss of engine power on takeoff from Hartlee Field Airport near Denton, Texas. The airplane was registered to and operated by a private individual. The flight instructor sustained minor injuries, and the airline transport pilot receiving instruction was not injured. Visual meteorological conditions prevailed, and a flight plan was not filed for the 14 Code of Federal Regulations Part 91 instructional flight. The flight instructor reported that the "check out" flight departed Lakeview Airport, Lake Dallas, Texas, about 1440 and proceeded to Hartlee Field. Following a full stop landing, with the pilot receiving instruction on the controls, a takeoff was initiated to the north. According to the flight instructor, "at approximately 100 feet the engine power completely disappeared." The flight instructor took control and turned the airplane approximately 45 degrees left to avoid a steel rail fence at the end of the runway. While the airplane was in the turn, the left wing tip struck the ground. The airplane turned 180 degrees and came to rest heading south approximately 50 feet from the wing touchdown point and 150 feet west of the runway centerline. An FAA inspector examined the airplane and reported that the left wing, main landing gear, propeller, engine, and firewall were damaged. A mechanic examined the airplane and found "the throttle control cable housing free, due to a broken attaching clamp." The mechanic reported that the broken clamp was made of aluminum; however, a steel clamp, Piper P/N 7536, "should have been used." The mechanic further reported that "the clamp appeared to have been fretting for some time, due to the appearance of the edges, but the main break looked fresh." He did not think the impact broke the clamp, "because when [he] held the cable assembly in its proper place, it was relaxed, with no strain, even though the airframe was bent in that area." The mechanic found no other anomalies during his examination of the airplane. ## Aircraft - Registration: [N92350](https://openairdocs.org/aircraft/N92350), registered now, S/N 16807, built 1946 (OpenAirDocs) - Reported make and model: Piper J3C-65 - Registry model: [Piper J3C-65](https://openairdocs.org/model/piper-j3c-65) (registry code 7100510) (OpenAirDocs) - Registry engine: [Continental A&C65 series](https://openairdocs.org/engine/continental-a-c65-series) (registry code 17003, reciprocating) (OpenAirDocs) - Category: Airplane - Serial number: 16807 - Airframe hours: 3414 - Engines: Continental A-65-8 65 horsepower reciprocating - Damage: Substantial damage - Flight: Instructional, Part 91 - Registered owner: Arthur J. Kipling - Airworthiness certificate: Standard, Normal - Last inspection: 100 hour, December 31, 1998, 57 hours before - Departed: 1F3 - Destination: 30F, LAKE DALLAS, TX - Airport: 1F3, Hartlee Field, runway 35, 2,100 × 100 ft, grass/turf ## Flight crew As NTSB recorded them. NTSB leaves out names. - Pilot; age 47; flight instructor, commercial, airline transport; airplane ratings: single-engine land, multi-engine land; instrument ratings: airplane; medical: class 2, valid medical--no waivers/lim.; seat: front; flight hours: 7,848 total, 500 in this make and model, 4,500 as pilot in command, 280 in the last 90 days, 100 in the last 30 days, 3 in the last 24 hours ## Weather - Conditions: Visual (VMC), Day - Wind: 90° at 1 knots - Visibility: 10 statute miles - Lowest ceiling: none - Temperature: 64 °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 19990301001899A](https://openairdocs.org/incident/19990301001899A), Mar 1, 1999: Piper J3C65, Denton, TX, Substantial damage. Acft engine quit on take-off, and the acft crashed while attempting to land. Other circumstances are unknown. (.19) on March 1, 1999, at 1515 central standard… 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.