# NTSB MIA99LA205: Cessna R172K, N1092V, Pontotoc, MS, July 28, 1999 - Type: NTSB accident investigation - Classification: Accident · No injuries · Limited investigation · Final report - Date: July 28, 1999, 06:10 local (11:10 UTC) - Place: Pontotoc, MS - Coordinates: 34.240589, -88.999992 (estimated) - Nearby events: https://openairdocs.org/map.md?lat=34.2406&lon=-89.0000&mi=10 - Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping) - Highest injury: No injuries - Injuries: 3 uninjured - Status: Completed, report November 2, 2000 - Report: Approved by Office Director - NTSB case key (mKey): 46952 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=MIA99LA205 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/46952/pdf - Page: https://openairdocs.org/ntsb/MIA99LA205 ## Probable cause a complete loss of engine power due to the failure of the oil pressure pump, resulting in oil starvation, a forced landing and subsequent nose over. ## Sequence of events In NTSB's coding before 2008 (https://www.ntsb.gov/GILS/Documents/codman.pdf). - Loss of engine power, climb - lubricating system,oil pressure pump - failure,total (cause) - fluid,oil - starvation (cause) - Forced landing, emergency descent/landing - In flight collision with terrain/water, emergency descent/landing - terrain condition - rough/uneven - Nose over, landing - flare/touchdown ## Analysis About 10 minutes after takeoff, the pilot reported there was a '...sudden change [in] engine rpm gage. Noticeably [sic] loss of power.' He informed ATC of the problem and had reached an altitude of about 2,300 mean sea level. The pilot attempted a forced landing in a cornfield. Upon landing the airplane nosed over and stopped upside down. Examination of the wreckage revealed that fuel was present in the airplane's fuel tanks. Examination of the engine revealed that the oil pump drive gear was found sheared, causing oil starvation to the engine which resulted in a complete loss of power. ## Factual narrative On July 28, 1999, about 0610 central daylight time, a Cessna R172K, N1092V, registered to an individual, was substantially damaged during a forced landing near Pontotoc, Mississippi. The private-rated pilot and two passengers reported no injuries. Visual meteorological conditions (VMC) prevailed in the vicinity, and no flight plan had been filed. The personal flight was being conducted in accordance with Title 14 CFR Part 91. The flight was originating at the time and was en route to Memphis, Tennessee. About 10 minutes after takeoff, the pilot reported that the airplane's engine lost power and the propeller stopped. According to the pilot there was a "...sudden change engine rpm gage. Noticeably [sic] loss of power. Informed Memphis Center of problem...had reached [altitude] of approximately 2,300 msl. Engine stopped. Landed in cornfield. Aircraft flipped over nose-stopped upside down." Examination of the wreckage revealed that fuel was present in the airplane's fuel tanks. The engine was examined at Jewell Aircraft Engines, Holly Springs, Mississippi, under the supervision of the FAA. Removal of the rear accessory case revealed that the oil pump drive gear was found sheared, causing oil starvation to the engine which resulted in a complete loss of power. ## Aircraft - Registration: [N1092V](https://openairdocs.org/deregistered/N1092V-2013-06-05), registration cancelled 2013-06-05, S/N R1722115, built 1976 (OpenAirDocs) - Reported make and model: Cessna R172K - Registry model: [Cessna R172K](https://openairdocs.org/model/cessna-r172k) (registry code 2072431) (OpenAirDocs) - Registry engine: [Continental IO-360 series](https://openairdocs.org/engine/continental-io-360-series) (registry code 17025, reciprocating) (OpenAirDocs) - Category: Airplane - Serial number: 1722115 - Airframe hours: 2296 - Engines: Continental IO-360K 195 horsepower reciprocating - Damage: Substantial damage - Flight: Personal, Part 91 - Registered owner: Jimmy D. Shelton Pa - Airworthiness certificate: Standard, Normal - Last inspection: Annual, January 15, 1999 - Departed: TUP, TUPELO, MS - Destination: MEM, MEMPHIS, TN ## Flight crew As NTSB recorded them. NTSB leaves out names. - Pilot; age 57; private; airplane ratings: single-engine land; medical: class 3, valid medical--w/ waivers/lim; seat: left; flight hours: 377 total, 375 in this make and model, 308 as pilot in command, 5 in the last 90 days ## Weather - Conditions: Visual (VMC), Day - Wind: calm - Visibility: 7 statute miles - Lowest ceiling: none - Temperature: 75 °F, dew point 73 °F - Altimeter: 30.00 inHg - Observed at: TUP ## 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 19990728010029A](https://openairdocs.org/incident/19990728010029A), Jul 28, 1999: Cessna R172K, Pontotoc, MS, Substantial damage. Pilot called memphis center and advised that he was experiencing power loss and would attempt to land in a field, radar contact and two-way radio lost shortly… 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.