# NTSB CHI98LA147: Cessna 172N, N733HY, Hannibal, MO, May 11, 1998 - Type: NTSB accident investigation - Classification: Accident · Minor injuries · Limited investigation · Final report - Date: May 11, 1998, 16:30 local (21:30 UTC) - Place: Hannibal, MO - Coordinates: 39.700942, -91.380043 (estimated) - Nearby events: https://openairdocs.org/map.md?lat=39.7009&lon=-91.3800&mi=10 - Phase of flight: [Initial climb](https://openairdocs.org/ntsb-phases/350) (OpenAirDocs' grouping) - Highest injury: Minor injuries - Injuries: 1 minor - Status: Completed, report February 15, 2001 - Report: Approved by Office Director - NTSB case key (mKey): 10872 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=CHI98LA147 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/10872/pdf - Page: https://openairdocs.org/ntsb/CHI98LA147 ## Probable cause a loss of engine power due to undetermined reasons. A factor was the rough field in which the forced landing was made. ## Sequence of events In NTSB's coding before 2008 (https://www.ntsb.gov/GILS/Documents/codman.pdf). - Loss of engine power, takeoff - initial climb - reason for occurrence undetermined (cause) - Forced landing, descent - emergency - In flight collision with terrain/water, landing - flare/touchdown - terrain condition - rough/uneven (contributing factor) - Nose over, landing - flare/touchdown ## Analysis The student pilot reported that during takeoff, at an altitude of 200-300 feet agl, the engine lost power. He applied carburetor heat and that 'seemed to help a little for 30-45 seconds.' He then turned off the carburetor heat at which time, according to the pilot, the engine rpm didn't change much. Shortly thereafter the engine lost all power and the propeller stopped. A forced landing was made in a plowed field during which time the airplane was substantially damaged. Post accident inspection failed to determine the cause of the power loss. ## Factual narrative On May 11, 1998, at 1630 central daylight time, a Cessna 172N, N733HY, operated by Mid America Aviation, Inc., nosed over during a forced landing. The forced landing resulted from a loss of engine power during an initial takeoff climb from runway 17 (3,990' x 74') at the Hannibal Municipal Airport, Hannibal, Missouri. The student pilot received minor injuries. The airplane was substantially damaged. The 14 CFR Part 91 local flight was operating in visual meteorological conditions without a flight plan. The flight was originating at the time of the accident. The student pilot reported that everything was normal during the aircraft preflight and engine run-up. He reported the takeoff was normal until he was over the end of the runway at 200 to 300 feet above the ground at whoch time the engine lost power. He stated he applied carburetor heat and that "...seemed to help a little for 30-45 seconds." He returned the carburetor heat to "cold" and the engine rpm didn't change much. He stated the engine then lost all power and the propeller completely stopped. The pilot reported he turned to the right and make a forced landing in a plowed field. Post accident inspection of the airplane and engine by an Inspector from the St. Louis Federal Aviation Administration Flight Standards District Office failed to reveal any mechanical failure/malfunction which would have resulted in the loss of engine power. ## Aircraft - Registration: [N733HY](https://openairdocs.org/deregistered/N733HY-2010-04-06), registration cancelled 2010-04-06, S/N 17268318, built 1976 (OpenAirDocs) - Reported make and model: Cessna 172N - Registry model: [Cessna 172N](https://openairdocs.org/model/cessna-172n) (registry code 2072434) (OpenAirDocs) - Registry engine: [Lycoming 0-320 series](https://openairdocs.org/engine/lycoming-0-320-series) (registry code 41508, reciprocating) (OpenAirDocs) - Category: Airplane - Serial number: 17268318 - Engines: Lycoming 150 horsepower reciprocating - Damage: Substantial damage - Flight: Personal, Part 91 - Registered owner: Mid America Aviation, Inc. - Airworthiness certificate: Standard, Normal; Standard, Utility - Last inspection: 100 hour, December 19, 1997 - Departed: HAE - Airport: HAE, Hannibal Municipal, runway 17, 3,900 × 74 ft, asphalt ## Flight crew As NTSB recorded them. NTSB leaves out names. - Pilot; age 59; student; medical: class 3, valid medical--w/ waivers/lim; seat: left; flight hours: 42 total, 40 in this make and model, 17 as pilot in command, 18 in the last 90 days, 6 in the last 30 days ## Weather - Conditions: Visual (VMC), Day - Wind: 170° at 6 knots - Visibility: 15 statute miles - Lowest ceiling: none - Temperature: 73 °F, dew point 46 °F - Altimeter: 29.00 inHg - Observed at: UIN, 20 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 19980511026889A](https://openairdocs.org/incident/19980511026889A), May 11, 1998: Cessna 172N, Hannibal, MO, Substantial damage. (.4)The student pilot reported that during takeoff, at an altitude of 200-300 feet AGL, the engine lost power. He applied carburetor heat and that 'seemed to… 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.