# NTSB NYC00LA129: Cessna 120, N2842N, Beaumont, PA, May 6, 2000 - Type: NTSB accident investigation - Classification: Accident · No injuries · Limited investigation · Final report - Date: May 6, 2000, 13:30 local (17:30 UTC) - Place: Beaumont, PA - Coordinates: 41.370697, -76.020088 (estimated) - Nearby events: https://openairdocs.org/map.md?lat=41.3707&lon=-76.0201&mi=10 - Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping) - Highest injury: No injuries - Injuries: 2 uninjured - Status: Completed, report November 29, 2000 - Report: Approved by Office Director - NTSB case key (mKey): 51276 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=NYC00LA129 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/51276/pdf - Page: https://openairdocs.org/ntsb/NYC00LA129 ## Probable cause A crack in the crankcase which resulted in a partial power loss. ## Sequence of events In NTSB's coding before 2008 (https://www.ntsb.gov/GILS/Documents/codman.pdf). - Loss of engine power(partial) - mech failure/malf, cruise - engine assembly,crankcase - cracked (cause) - In flight collision with terrain/water, landing - flare/touchdown ## Analysis While in cruise flight, the pilot experienced a partial power loss and performed a precautionary landing. During the landing to uneven terrain, the airplane came to rest inverted. Examination of the engine revealed a 2 to 3 inch crack in the vicinity of the 'number one' cylinder. At the time of the accident, the engine was approximately 53 years old, with 1,778 hours of operation since its last overhaul in 1961. ## Factual narrative On May 6, 2000, about 1330 Eastern Daylight Time, a Cessna 120, N2842N, was substantially damaged during a precautionary landing near Beaumont, Pennsylvania. The certificated private pilot and passenger were not injured. Visual meteorological conditions prevailed, and no flight plan was filed for the personal flight conducted under 14 CFR Part 91. The flight departed Bloomsburg Municipal Airport, Bloomsburg, Pennsylvania, about 1300; and was destined for Skyhaven Airport, Tunkhannock, Pennsylvania. The pilot stated that he was in cruise flight, about 3,300 feet above mean-sea-level. He observed a decrease in oil pressure, followed by an increase in oil temperature. The engine began to run rough, and the pilot performed a precautionary landing to a field. During the landing, the airplane struck uneven terrain, and came to rest inverted. The propeller, cowling, firewall, and horizontal stabilizer sustained substantial damage. The pilot further stated that the engine was originally manufactured in 1947. It had an overhaul after approximately 950 hours of operation, in 1961. The pilot added that the overhaul occurred before he purchased the airplane, and the reason for the overhaul was not documented in the airplane logbooks. At the time of the accident, the engine had accumulated approximately 1,778 hours of operation since the overhaul in 1961. Examination of the wreckage by a Federal Aviation Administration Inspector revealed oil inside the cowling. The Inspector was not able to determine the source of the oil leak. The pilot planned to have a mechanic further examine the engine. About 1 month after the accident, a mechanic observed a 2 to 3 inch crack in the crankcase. The crack was in the vicinity of the "number one" cylinder. The mechanic said the he could not be positive the crack occurred before the impact, but that it would explain the loss of oil pressure, gain in oil temperature, and partial power loss. ## Aircraft - Registration: N2842N (not matched to a registry record) - Reported make and model: Cessna 120 - Category: Airplane - Serial number: 13103 - Airframe hours: 2674 - Engines: Continental C-85-12 85 horsepower reciprocating - Damage: Substantial damage - Flight: Personal, Part 91 - Registered owner: Roger J. Morton - Airworthiness certificate: Standard, Normal - Last inspection: Annual, December 14, 1999, 26 hours before - Departed: N13, BLOOMSBURG, PA - Destination: 76N, TUNKHANNOCK, PA - Airport: 76N, Skyhaven Airport ## Flight crew As NTSB recorded them. NTSB leaves out names. - Pilot; age 52; private; airplane ratings: single-engine land; medical: class 3, valid medical--w/ waivers/lim; seat: left; flight hours: 1,046 total, 851 in this make and model, 986 as pilot in command, 18 in the last 90 days, 10 in the last 30 days ## Weather - Conditions: Visual (VMC), Day - Wind: 260° at 6 knots - Visibility: 10 statute miles - Lowest ceiling: none - Temperature: 84 °F, dew point 59 °F - Altimeter: 30.00 inHg - Observed at: AVP, 10 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 20000506022529A](https://openairdocs.org/incident/20000506022529A), May 6, 2000: Cessna 120, Tunkhannock, PA, Substantial damage. (.4)While in cruise flight, the pilot experienced a partial power loss and performed a precautionary landing. During the landing to uneven terrain, the… 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.