# NTSB CHI00LA252: Cessna 182Q, N94MB, Warsaw, MO, August 10, 2000 - Type: NTSB accident investigation - Classification: Accident · No injuries · Limited investigation · Final report - Date: August 9, 2000, 21:40 local (Aug 10, 2000, 02:40 UTC) - Place: Warsaw, MO - Coordinates: 38.239635, -93.370819 (estimated) - Nearby events: https://openairdocs.org/map.md?lat=38.2396&lon=-93.3708&mi=10 - Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping) - Highest injury: No injuries - Injuries: 2 uninjured - Status: Completed, report May 13, 2003 - Report: Approved by Office Director - Parties: Federal Aviation Administration MKC FSDO - NTSB case key (mKey): 49957 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=CHI00LA252 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/49957/pdf - Page: https://openairdocs.org/ntsb/CHI00LA252 ## Probable cause Inadequate maintenance and the pilot's failure to maintain airspeed which resulted in failure of the carburetor and an inadvertent stall. ## Sequence of events In NTSB's coding before 2008 (https://www.ntsb.gov/GILS/Documents/codman.pdf). - Loss of engine power, landing - flare/touchdown - maintenance - inadequate, other maintenance personnel (cause) - fuel system,carburetor - failure,partial (cause) - Forced landing, descent - emergency - Loss of control - in flight, landing - flare/touchdown - airspeed - not maintained, pilot in command (cause) - stall - inadvertent, pilot in command - In flight collision with terrain/water, descent - uncontrolled - terrain condition - ground ## Analysis The pilot reported that he applied full throttle and pushed in the carburetor heat during the go-around, but the engine did not respond normally. He reported that, "It felt like a brake had been applied to the engine. It didn't pick up RPM like normal." The pilot reported the airplane started rolling to the right and he applied left aileron and left rudder to bring the wings level. He reported the airplane "... made an abrupt roll to the left and into the ground." An inspection of the carburetor revealed that the horseshoe washer (Mixture Control Valve Head) was found detached from the Mixture Control Metering Valve and laying in the bottom of the carburetor bowl. When the horseshoe washer was placed back on the Metering Valve, it was loose. The inspection also revealed that the pump plunger assembly, the float valve seat, and the Mixture Control Metering Valve were worn. The carburetor airbox gasket had a smaller diameter than the diameter of the carburetor air intake. The engine was put on a test stand with an operable carburetor and it ran at idle power and at 2,300 RPM's. ## Factual narrative On August 9, 2000, at 2140 central daylight time, a Cessna 182Q, N94MB, was substantially damaged when it impacted runway 18 (3,300 feet by 60 feet, asphalt) at the Warsaw Municipal Airport (56M), Warsaw, Missouri, after a partial loss of power during a go-around. The pilot reported the airplane had ballooned during the flare. The airplane's right wing impacted the ground followed by the nose wheel and then the engine. The private pilot and one passenger were not injured. The 14 CFR Part 91 flight had departed Sedalia, Missouri, at 2125 and was en route to Warsaw Municipal Airport, Warsaw, Missouri. Visual meteorological conditions prevailed and no flight plan was filed. The pilot reported that he applied full throttle and pushed in the carburetor heat during the go-around, but the engine did not respond normally. He reported that, "It felt like a brake had been applied to the engine. It didn't pick up RPM like normal." The pilot reported the airplane started rolling to the right and he applied left aileron and left rudder to bring the wings level. He reported the airplane "... made an abrupt roll to the left and into the ground." The pilot reported that a pilot who lived north of the airport had reported seeing a "contrail" coming from the airplane during the approach to landing. An on-site inspection of the airplane revealed there was fuel on board the airplane. The spark plug from the No. 5 cylinder was removed and was dark in color. The engine was not rotated on-site. The flaps, flap handle, and flap indicator were in the full down position. The engine was sent to Teledyne Continental Motors to be run on a test stand. Prior to the engine run, the following components were replaced: intake tubing for the No. 2, 4, 5, and 6 cylinders; slave exhaust for all cylinders; oil pan; and the carburetor. The engine started and was run at idle power and at 2,300 rpm. An inspection of the carburetor at an engine component repair facility revealed the following anomalies: 1. The carburetor airbox gasket had a smaller diameter than the diameter of the carburetor air intake. 2. The pump plunger assembly was worn. 3. The float valve seat was worn. 4. The horseshoe washer (Mixture Control Valve Head) was found detached from the Mixture Control Metering Valve and laying in the carburetor bowl. When the horseshoe washer was placed back on the Metering Valve, it was loose. 5. The Mixture Control Metering Valve was worn. 6. Soot was found around the plunger area for the mixture control metering valve stem. 7. Black soot was found all through the venturi. ## Aircraft - Registration: [N94MB](https://openairdocs.org/deregistered/N94MB-2013-08-23), registration cancelled 2013-08-23, S/N 18265932, built 1977 (OpenAirDocs) - Reported make and model: Cessna 182Q - Registry model: [Cessna 182Q](https://openairdocs.org/model/cessna-182q) (registry code 2072732) (OpenAirDocs) - Registry engine: [Continental O-470 series](https://openairdocs.org/engine/continental-o-470-series) (registry code 17026, reciprocating) (OpenAirDocs) - Category: Airplane - Serial number: 18265932 - Airframe hours: 5073 - Engines: Continental 182Q 230 horsepower reciprocating - Damage: Substantial damage - Flight: Personal, Part 91 - Registered owner: Charles Jones - Airworthiness certificate: Standard, Normal - Last inspection: Annual, March 3, 2000, 95 hours before - Departed: DMO, SEDALIA, MO - Destination: 56M, WARSAW, MO - Airport: 56M, Warsaw Municipal, runway 18, 3,300 × 60 ft, asphalt ## Flight crew As NTSB recorded them. NTSB leaves out names. - Pilot; injuries: none; private; airplane ratings: single-engine land; medical: class 3, valid medical--w/ waivers/lim; last flight review May 1, 1999; flight hours: 236 total, 59 in this make and model, 176 as pilot in command ## Weather - Conditions: Visual (VMC), Day - Visibility: 10 statute miles - Lowest ceiling: none - Temperature: 84 °F, dew point 75 °F - Altimeter: 30.01 inHg - Observed at: DMO, 32 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 20000809007849A](https://openairdocs.org/incident/20000809007849A), Aug 9, 2000: Cessna 182Q, Warsaw, MO, No damage. (-23) Pilot stated that when on final to runway 18, the engine did not respond to throttle movement, and that the a/c veered to the right. He responded by… 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.