# NTSB LAX93LA222: Cessna 182P, N642WR, Reno, NV, May 24, 1993 - Type: NTSB accident investigation - Classification: Accident · No injuries · Limited investigation · Final report - Date: May 24, 1993, 09:30 local (16:30 UTC) - Place: Reno, NV - Coordinates: 39.910034, -119.680198 (estimated) - Nearby events: https://openairdocs.org/map.md?lat=39.9100&lon=-119.6802&mi=10 - Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping) - Highest injury: No injuries - Injuries: 1 uninjured - Status: Completed, report June 22, 1994 - Report: Approved by Office Director - NTSB case key (mKey): 28389 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=LAX93LA222 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/28389/pdf - Page: https://openairdocs.org/ntsb/LAX93LA222 ## Probable cause INCORRECT INSTALLATION OF A BEARING IN THE AIRPLANE'S ALTERNATOR DURING OVERHAUL BY MAINTENANCE PERSONNEL. A FACTOR IN THE ACCIDENT WAS THE ROUGH, UNEVEN TERRAIN. ## Sequence of events In NTSB's coding before 2008 (https://www.ntsb.gov/GILS/Documents/codman.pdf). - Airframe/component/system failure/malfunction, cruise - normal - electrical system,alternator - seized (cause) - maintenance,overhaul - improper, other maintenance personnel (cause) - Forced landing, landing - flare/touchdown - Nose gear collapsed, landing - roll - terrain condition - rough/uneven (contributing factor) - Nose over, landing - roll ## Analysis DURING CRUISE FLIGHT, THE PILOT HEARD A LOUD NOISE AND SAW SMOKE COMING FROM THE ENGINE AREA. HE SECURED THE ENGINE, ENTERED A POWER=OFF GLIDE, AND LANDED THE AIRPLANE IN ROUGH, UNEVEN TERRAIN. DURING LANDING, THE NOSEGEAR COLLAPSED AND THE AIRPLANE NOSED OVER. EXAMINATION REVEALED THAT THE ALTERNATOR HAD SEIZED CAUSING THE DRIVE BELT TO BREAK. THE AIRPLANE'S ENGINE AND ACCESSORIES HAD BEEN REPLACED WITH OVERHAULED COMPONENTS ABOUT 25 FLIGHT HOURS PRIOR TO THE ACCIDENT. FURTHER EXAMINATION OF THE ALTERNATOR SHOWED THAT A BEARING IN THE ALTERNATOR HAD BEEN INSTALLED BACKWARD DURING THE OVERHAUL PROCESS. ## Factual narrative On May 24, 1993, about 0930 hours Pacific daylight time, a Cessna 182P, N642WR, sustained substantial damage following the collapse of its nosegear and subsequent nose over during landing roll about 5 miles north of Reno, Nevada. The nosegear collapse and nose over came at the culmination of a forced landing which was precipitated by an engine problem. The certificated private pilot was not injured. The cross country, personal flight was being operated by the pilot/owner. The flight originated in Sunriver, Oregon, about 0800 hours and was destined for Reno. Visual meteorological conditions prevailed and a flight plan was not filed. In his oral statement, the pilot said he was at cruise flight near Reno when he heard a loud noise which came from the vicinity of the airplane's engine. He said the engine area also began to smoke. He reported that he secured the engine and entered a power off forced landing. The airplane landed on rough and uneven terrain. He said the nose gear collapsed during landing roll and the airplane nosed over. An FAA airworthiness inspector examined the airplane after the accident. The inspector said the airplane's alternator "seized" resulting in a frozen pulley on the alternator. The drive belt then broke causing a loud noise. An airframe and powerplant mechanic, who the pilot said routinely performed maintenance on the airplane, was interviewed. He said the airplane's engine and engine accessories were replaced with overhauled parts about 25 flight hours prior to the accident. He said that the alternator was examined after the accident for the pilot's insurer. During the examination, it was noted that a bearing had been installed backward during the overhaul process. ## Aircraft - Registration: [N642WR](https://openairdocs.org/aircraft/N642WR), registered now, S/N 182-65115 (OpenAirDocs) - Reported make and model: CESSNA 182P - Registry model: [Cessna 182](https://openairdocs.org/model/cessna-182) (registry code 2072702) (OpenAirDocs) - Category: Airplane - Serial number: 182-65115 - Airframe hours: 1525 - Engines: CONTINENTAL O-470 230 horsepower reciprocating - Damage: Substantial damage - Flight: Personal, Part 91 - Registered owner: Bruce P. Bischof - Airworthiness certificate: Standard, Normal - Last inspection: Annual, November 1, 1992, 25 hours before - Departed: S21, SUNRIVER, OR ## 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: 3,300 total ## Weather - Conditions: Visual (VMC), Day - Wind: 120° at 4 knots - Visibility: 40 statute miles - Lowest ceiling: none - Temperature: 70 °F, dew point 43 °F - Altimeter: 29.00 inHg - Observed at: RNO, 6 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 19930524015059A](https://openairdocs.org/incident/19930524015059A), May 24, 1993: Cessna 182P, Reno, NV, Substantial damage. Loud noise and smoke from engine. Secured same. Nosed over in rough terrain. Alternator seized. Broke drive belt. 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.