# NTSB IAD05LA013: Cessna 172E, N3750S, Rupert, WV, November 21, 2004 - Type: NTSB accident investigation - Classification: Accident · No injuries · Limited investigation · Final report - Date: November 21, 2004, 14:30 local (19:30 UTC) - Place: Rupert, WV - Coordinates: 37.883335, -80.5 - Nearby events: https://openairdocs.org/map.md?lat=37.8833&lon=-80.5000&mi=10 - Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping) - Highest injury: No injuries - Injuries: 3 uninjured - Status: Completed, report April 25, 2006 - Report: Approved by Office Director - Parties: FAA/FSDO - NTSB case key (mKey): 60600 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=IAD05LA013 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/60600/pdf - Page: https://openairdocs.org/ntsb/IAD05LA013 ## Probable cause The pilot’s delayed application of carburetor heat, which resulted in a rough running engine. A factor was the bulldozer on the logging road where the pilot performed a precautionary landing. ## Sequence of events In NTSB's coding before 2008 (https://www.ntsb.gov/GILS/Documents/codman.pdf). - Loss of engine power(partial) - nonmechanical, cruise - carburetor heat - delayed, pilot in command (cause) - fuel system,carburetor - ice (cause) - weather condition - carburetor icing conditions - Forced landing, descent - emergency - On ground/water collision with object, landing - roll - precautionary landing - performed, pilot in command - object - vehicle (contributing factor) ## Analysis While in cruise flight, the air temperature was 35 degrees at 4,500 feet, and the cabin heat was turned on. About 10 to 20 minutes later, the airplane encountered light mist, and approximately 40-50 nautical miles later, with deteriorating weather, the pilot decided to turn around. Shortly thereafter, "the engine was not making full power and was missing. Carburetor ice was suspected with the high humidity and the low outside air temperature." The pilot applied carburetor heat for about 1 minute, but it had no effect. The engine continued to run roughly, and engine rpm decreased to approximately 2,000 to 2,100 rpm. The pilot reapplied carburetor heat, but there was no improvement in engine performance. The pilot felt that he could not safely transition higher terrain en route to his destination, so he decided to make a precautionary landing on a logging road. During the landing, the pilot noticed a bulldozer on the road. The pilot swerved the airplane off the road to avoid the bulldozer, and the left wing impacted a tree. ## Factual narrative On November 21, 2004, about 1430 eastern standard time, a Cessna 172E, N3750S, was substantially damaged during a precautionary landing near Rupert, West Virginia. The certificated private pilot and two passengers were not injured. Visual meteorological conditions prevailed. The airplane was not operating on a flight plan between Johnston County Airport (JNX), Smithfield, North Carolina, and Summersville Airport (SXL), Summersville, West Virginia. The business flight was conducted under 14 CFR Part 91. According to the pilot, in the vicinity of Roanoke, the air temperature was 35 degrees at 4,500 feet, and the cabin heat was turned on. About 10 to 20 minutes north of Roanoke, the airplane encountered light mist, and just past Rupert, West Virginia, with deteriorating weather, the pilot decided to turn around. Shortly thereafter, "the engine was not making full power and was missing. Carburetor ice was suspected with the high humidity and the low outside air temperature." The pilot applied carburetor heat for about 1 minute, but it had no effect. The engine continued to run roughly while in cruise flight, and the engine rpm decreased to approximately 2,000 to 2,100 rpm. The pilot then reapplied carburetor heat, but there was no improvement in engine performance. The pilot felt that he could not safely transition higher terrain en route to his destination, so he decided to make a precautionary landing on a logging road. During the landing, the pilot noticed a bulldozer on the road. The pilot swerved the airplane off the road, and the left wing impacted a tree. The closest airport with recorded weather was Greenbrier Valley Airport (LWB), Lewisburg, West Virginia, about 20 nautical miles to the southeast. The airport did not have the capability to record cloud cover, but did record, about the time of the accident, winds from 270 degrees at 3 knots, mist, temperature 48 degrees F, dew point 48 degrees F, and a barometric pressure of 30.25 inches of mercury. ## Aircraft - Registration: [N3750S](https://openairdocs.org/deregistered/N3750S-2015-05-13), registration cancelled 2015-05-13, S/N 17250950, built 1963 (OpenAirDocs) - Reported make and model: Cessna 172E - Registry model: [Cessna 172E](https://openairdocs.org/model/cessna-172e) (registry code 2072412) (OpenAirDocs) - Registry engine: [Continental 0-300 series](https://openairdocs.org/engine/continental-0-300-series) (registry code 17022, reciprocating) (OpenAirDocs) - Category: Airplane - Serial number: 17250950 - Airframe hours: 3479 - Engines: Continental O-300D 145 horsepower reciprocating - Damage: Substantial damage - Flight: Business, Part 91 - Registered owner: Trails End Construction, Inc. - Airworthiness certificate: Standard, Normal - Last inspection: Annual, November 1, 2004, 3 hours before - Departed: JNX, Smithfield, NC - Destination: SXL, Summersville, WV ## Flight crew As NTSB recorded them. NTSB leaves out names. - Pilot; age 34; injuries: none; private; airplane ratings: single-engine land; instrument ratings: airplane; medical: class 3; last flight review March 1, 2004; seat: left; flight hours: 473 total, 185 in this make and model, 389 as pilot in command, 39 in the last 90 days, 19 in the last 30 days ## Weather - Conditions: Visual (VMC), Day - Wind: 270° at 3 knots - Visibility: 5 statute miles - Temperature: 48 °F, dew point 48 °F - Altimeter: 30.25 inHg - Observed at: LWB, 20 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.