# NTSB ATL93LA102: Piper J3C-65, N87811, Greensboro, NC, June 3, 1993 - Type: NTSB accident investigation - Classification: Accident · No injuries · Limited investigation · Final report - Date: June 3, 1993, 19:20 local (23:20 UTC) - Place: Greensboro, NC - Coordinates: 36.000625, -79.759841 (estimated) - Nearby events: https://openairdocs.org/map.md?lat=36.0006&lon=-79.7598&mi=10 - Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping) - Highest injury: No injuries - Injuries: 1 uninjured - Status: Completed, report November 3, 1993 - Report: Approved by Office Director - NTSB case key (mKey): 3220 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=ATL93LA102 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/3220/pdf - Page: https://openairdocs.org/ntsb/ATL93LA102 ## Probable cause THE PILOT'S IMPROPER USE OF CARBURETOR HEAT DURING THE FLIGHT. FACTORS WERE THE CARBURETOR ICING CONDITIONS AT THE TIME OF THE ACCIDENT, AND TREES AT THE FORCED LANDING SITE ## Sequence of events In NTSB's coding before 2008 (https://www.ntsb.gov/GILS/Documents/codman.pdf). - Loss of engine power(partial) - nonmechanical, cruise - normal - weather condition - carburetor icing conditions (contributing factor) - carburetor heat - improper use of, pilot in command (cause) - Forced landing, descent - emergency - In flight collision with object, descent - emergency - object - tree(s) (contributing factor) ## Analysis THE PRIVATE PILOT HAD LEVELED OFF AT 2,000 FEET MSL WHEN THE ENGINE GRADUALLY LOST POWER. HE TURNED BACK TOWARD THE AIRPORT, BUT WAS UNABLE TO MAINTAIN ALTITUDE. HE APPLIED CARBURETOR HEAT, AND THE ENGINE RESPONDED; HOWEVER, HE COULD NOT AVOID COLLIDING WITH A TALL TREE. THE AIRPLANE CRASHED INTO THE TOP OF THE TREE, AND THE PILOT EXITED THE AIRPLANE UNHURT. ACCORDING TO CARBURETOR ICING CHARTS, THE WEATHER CONDITIONS WERE CONDUCIVE TO THE FORMATION OF CARBURETOR ICE ## Factual narrative On June 3, 1993, at about 1920 eastern daylight time, a Piper J3C-65, N87811, collided with a tree following a reported engine power loss near Greensboro, North Carolina. The private pilot was not injured in the accident. The aircraft was substantially damaged. The aircraft was operated under 14 CFR Part 91 by the pilot. Visual meteorological conditions existed at the time, and no flight plan was filed for the personal flight to a private airstrip in Caswell County, North Carolina. The flight originated at the Southeast Greensboro Airport at about 1900. The pilot reported the following. After departing from the Southeast Greensboro Airport, he climbed to 2,000 feet mean sea level (MSL). After established in cruise flight, the engine began to gradually lose power. He initiated a turn back to the airport. He was unable to maintain level flight, and was unable to glide to the airport. During the forced landing, the airplane collided with the top of a tall tree. The aircraft remained lodged in the top of the tree, and the pilot exited the airplane. The pilot later reported that the engine lost power due to carburetor ice. He applied carburetor heat after the loss of power, and the engine responded, however he was unable to avoid the collision with the tree. The temperature and dew point at the time of the accident were in a regime which would be conducive to carburetor icing conditions, according to carburetor icing charts. The visibility at the time of the accident was 5 miles, with haze. ## Aircraft - Registration: [N87811](https://openairdocs.org/aircraft/N87811), registered now, S/N 15094, 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: 15094 - Airframe hours: 2630 - Engines: CONTINENTAL A-65-8 65 horsepower reciprocating - Damage: Substantial damage - Flight: Personal, Part 91 - Operator: Roberts, John K. - Registered owner: Roberts, John K. - Airworthiness certificate: Standard, Normal - Last inspection: Annual, October 15, 1992, 20 hours before - Destination: NONE, CASWELL COUNTY, NC ## Flight crew As NTSB recorded them. NTSB leaves out names. - Pilot; age 45; flight instructor, commercial; airplane ratings: single-engine land, multi-engine land; instrument ratings: airplane; medical: class 2, valid medical--no waivers/lim.; seat: rear; flight hours: 1,500 total, 600 in this make and model, 1,300 as pilot in command ## Weather - Conditions: Visual (VMC), Day - Wind: 200° at 10 knots - Visibility: 5 statute miles - Lowest ceiling: none - Temperature: 82 °F, dew point 64 °F - Altimeter: 29.00 inHg - Observed at: GSO, 15 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 19930603034309A](https://openairdocs.org/incident/19930603034309A), Jun 3, 1993: Piper J3C65, Greensboro, NC, Substantial damage. Lost power en route. Struck and lodged in a tree top on forced landing. Engine tested normal. Carb icing existed. 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.