# NTSB FTW04LA096: Cessna 140, N2435V, Portland, TX, March 18, 2004 - Type: NTSB accident investigation - Classification: Accident · Serious injuries · Limited investigation · Final report - Date: March 18, 2004, 14:55 local (20:55 UTC) - Place: Portland, TX - Coordinates: 27.887777, -97.354164 - Nearby events: https://openairdocs.org/map.md?lat=27.8878&lon=-97.3542&mi=10 - Phase of flight: [Maneuvering](https://openairdocs.org/ntsb-phases/450) (OpenAirDocs' grouping) - Highest injury: Serious injuries - Injuries: 1 serious - Status: Completed, report June 30, 2004 - Report: Approved by Office Director - Parties: Teledyne Continental Motors, San Antonio Flight Standards District Office - NTSB case key (mKey): 58919 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=FTW04LA096 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/58919/pdf - Page: https://openairdocs.org/ntsb/FTW04LA096 ## Probable cause The pilots failure to maintain airspeed resulting in an inadvertant stall while executing a forced landing. A factor was the loss of engine power for undetermined reasons. ## Sequence of events In NTSB's coding before 2008 (https://www.ntsb.gov/GILS/Documents/codman.pdf). - Loss of engine power, maneuvering - reason for occurrence undetermined (contributing factor) - fuel system,carburetor - unapproved part - Forced landing, emergency descent/landing - Loss of control - in flight, emergency descent/landing - stall - inadvertent, pilot in command (cause) - In flight collision with terrain/water, descent - uncontrolled ## Analysis The commercial pilot took-off and while still in the traffic pattern, radioed a mechanic on the ground stating that he was "losing power." The pilot attempted to return to the runway, however he landed short of the runway. According to a witness, the left side of the airplane and engine cowling impacted the ground, bounced, and then the right wing tip hit the ground before the plane settled on its fuselage and left wing tip. Examination of the gas and oil revealed that they were clean and clear of debris. The gascolator was clean and full. The aircraft was topped off with fuel prior to departure, and no anomalies were noted with the fuel system. All engine accessories were in place, and the engine rotated. Engine continuity and compression were established. The carburetor (part number 10-4894) was removed for inspection. The proper carburetor part number for the accident aircraft engine (C-90-12F) is 10-5082. The carburetor that was installed on the accident airplane's engine was certified for a O-200-A engine. Precision Airmotive Corporation (type certificate holder of the carburetor) stated that the carburetors could not be converted from engine to another, and that certification testing had not been done for the carburetor (part number,10-4894) to be installed on C-90-12F series engines. The carburetor that was installed on the accident airplane is not interchangeable between O-200-A and C-90-12F series engines. ## Factual narrative On March 18, 2004, approximately 1455, a Cessna 140 single-engine airplane, N2435V, registered to and operated by a private individual, was substantially damaged during a forced landing following a loss of engine power shortly after takeoff from the Hunt Airport (9R5), near Portland, Texas. The commercial pilot, who was the sole occupant of the aircraft, sustained serious injuries. Visual meteorological conditions prevailed and a flight plan was not filed for the Title 14 Code of Federal Regulations personal flight. According to the UNICOM operator at the airport, the pilot departed 9R5, and while still in the traffic pattern, radioed that he was "losing power." A witness, who was driving eastbound on a road located approximately one mile west of the airport, reported that the weather was clear, but windy, with southeast winds of about 15-20 mph and higher gusts. The witness observed the aircraft flying south of the road, in a northerly direction. He stated that the aircraft was very low, about "less than fifty feet" from the ground. As the aircraft approached the road, it "suddenly" pulled up, and made a steep left turn, "virtually standing on its left wing." While recovering from the steep left turn, the aircraft "dipped" forward onto its nose, and flew directly down into the ground approximately 50-feet south of the roadway. The left side of the airplane and engine cowling impacted the ground, bounced, and then the right wing tip hit the ground before the plane settled on its fuselage and left wing tip. Examination of the wreckage by a FAA inspector, who responded to the accident site, revealed structural damage to the nose, and both wings. Samples of the fuel and engine oil appeared to be clean and clear of debris, and respective filters were found to be clean. The gascolator was clean and full. Records from the fixed base operator at the airport showed that the airplane was "topped off" with fuel prior to departure, and no anomalies were noted with the fuel system. All engine accessories were in place, and the engine (Continental C-90-12F series) rotated when pulled thru by hand. Engine drive continuity and compression were established. The carburetor, part number 10-4894, was removed for inspection. According to Precision Airmotive Corporation (type certificate holder of the subject carburetor), the carburetor was an approved part for the Continental O-200-A series engine, and were not aware of certification testing of the carburetor to be utilized on the Continental C-90-12F engine. According to the engine manufacturer, the proper carburetor part number for the accident aircraft engine (C-90-12F) is 10-5082. The type certificate holder for the carburetor further stated that the carburetor that was installed on the accident airplane is not interchangeable between O-200-A and C-90-12F series engines. Despite attempts from the Investigator-In-Charge to obtain a Pilot/Operator Aircraft Accident Report (NTSB Form 6120.1/2), a completed form was not obtained. ## Aircraft - Registration: [N2435V](https://openairdocs.org/deregistered/N2435V-2014-09-19), registration cancelled 2014-09-19, S/N 14685, built 1948 (OpenAirDocs) - Reported make and model: Cessna 140 - Registry model: [Cessna 140](https://openairdocs.org/model/cessna-140) (registry code 2071602) (OpenAirDocs) - Registry engine: [Continental C90 series](https://openairdocs.org/engine/continental-c90-series) (registry code 17009, reciprocating) (OpenAirDocs) - Category: Airplane - Serial number: 14685 - Engines: Continental C-90-12F 95 horsepower reciprocating - Damage: Substantial damage - Flight: Personal, Part 91 - Operator: William F. Mauch - Registered owner: Jarrell D. Moore - Airworthiness certificate: Standard, Normal - Departed: 9R5, Portland, TX - Destination: 9R5 ## Flight crew As NTSB recorded them. NTSB leaves out names. - Pilot; age 72; injuries: serious; commercial, flight instructor; airplane ratings: single-engine land; medical: class 3, valid medical--w/ waivers/lim; seat: left; flight hours: 1,000 total ## Weather - Conditions: Visual (VMC), Day - Wind: 150° at 17 knots - Visibility: 10 statute miles - Lowest ceiling: 3,500 ft broken - Temperature: 79 °F, dew point 72 °F - Altimeter: 29.95 inHg - Observed at: CRP, 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 20040318008479A](https://openairdocs.org/incident/20040318008479A), Mar 18, 2004: Cessna 140, Portland, TX, Substantial damage. (-23) On 03-18-04 Mr. Mauch jr. piloted an unworthy aircraft, during the takeoff sequence and shortly after lift off the aircraft began to lose engine power,… 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.