# NTSB WPR12LA181: Cub Crafters CC11-100, N499CC, Monmouth, OR, April 22, 2012 - Type: NTSB accident investigation - Classification: Accident · No injuries · Limited investigation · Final report - Date: April 22, 2012, 07:45 local (14:45 UTC) - Place: Monmouth, OR - Coordinates: 44.841945, -123.255554 - Nearby events: https://openairdocs.org/map.md?lat=44.8419&lon=-123.2556&mi=10 - Phase of flight: [Initial climb](https://openairdocs.org/ntsb-phases/350) (OpenAirDocs' grouping) - Defining event: [Initial climb: Loss of engine power (partial)](https://openairdocs.org/ntsb-events/342) - Highest injury: No injuries - Injuries: 1 uninjured - Status: Completed, report August 29, 2012 - Report: Approved by Office Director - NTSB office: Western Pacific Region - Parties: Federal Aviation Administration - SAIBs cited in the narratives: [SAIB CE-09-35](https://openairdocs.org/saib/CE-09-35) (OpenAirDocs) - NTSB case key (mKey): 83464 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=WPR12LA181 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/83464/pdf - NTSB docket: https://data.ntsb.gov/Docket?ProjectID=83464 - Page: https://openairdocs.org/ntsb/WPR12LA181 ## Probable cause A partial loss of engine power during takeoff for undetermined reasons. ## Findings NTSB's coded findings; those marked are part of the probable cause. - [Not determined](https://openairdocs.org/ntsb-findings/05000000): Not determined › Not determined · Unknown/Not determined (probable cause); cases with it: [Cub Crafters CC11-100, 1 case](https://openairdocs.org/ntsb-findings/05000000/cases.md?model=060002H), [All aircraft, 2,247 cases](https://openairdocs.org/ntsb-findings/05000000/cases.md) - [Terrain: rough terrain](https://openairdocs.org/ntsb-findings/03021015): Environmental issues › Physical environment · Not specified; cases with it: [Cub Crafters CC11-100, 1 case](https://openairdocs.org/ntsb-findings/03021015/cases.md?model=060002H), [All aircraft, 442 cases](https://openairdocs.org/ntsb-findings/03021015/cases.md) ## Sequence of events The events NTSB coded, in order, by phase of flight. The defining event best describes what happened. - [Initial climb: Loss of engine power (partial)](https://openairdocs.org/ntsb-events/342) (defining event); cases with it: [Cub Crafters CC11-100, 1 case](https://openairdocs.org/ntsb-events/342/sequence.md?model=060002H), [All aircraft, 1,858 cases](https://openairdocs.org/ntsb-events/342/sequence.md) - [Landing: Off-field or emergency landing](https://openairdocs.org/ntsb-events/440); cases with it: [Cub Crafters CC11-100, 2 cases](https://openairdocs.org/ntsb-events/440/sequence.md?model=060002H), [All aircraft, 3,365 cases](https://openairdocs.org/ntsb-events/440/sequence.md) - [Landing-landing roll: Collision with terr/obj (non-CFIT) ](https://openairdocs.org/ntsb-events/470); cases with it: [Cub Crafters CC11-100, 6 cases](https://openairdocs.org/ntsb-events/470/sequence.md?model=060002H), [All aircraft, 10,189 cases](https://openairdocs.org/ntsb-events/470/sequence.md) ## Analysis The pilot reported that shortly after takeoff the engine sputtered and he immediately initiated a precautionary landing without having time to troubleshoot the problem. The pilot force-landed the airplane in a field and it nosed over. The pilot stated that he sumped the fuel system prior to departure and found no contaminants. The carburetor icing probability chart with the temperature and dew point reported at the time of the accident showed a probability of serious icing at cruise power, but since the pilot verified that the carburetor heat was on just prior to departure, it is unlikely to have been a factor in the partial loss of engine power. During the postaccident test run of the engine, no mechanical failures or malfunctions were revealed that would have precluded normal operation. ## Factual narrative On April 22, 2012, about 0745 Pacific daylight time, N499CC, a Cub Crafters Inc. CC11-100, nosed over following a precautionary landing near Monmouth, Oregon. The airline transport pilot, who was operating the airplane as a sport pilot and was the sole occupant, was not injured. The airplane sustained substantial damage. The airplane was being operated under Title 14 Code of Federal Regulations Part 91. Visual meteorological conditions prevailed and no flight plan was filed. According to the pilot, shortly after departing from a private airstrip, the engine sputtered. Due to the low altitude of the airplane, the pilot immediately initiated a precautionary landing and was unable to perform any troubleshooting. The airplane landed in a grass field. During the landing roll, the airplane nosed over. The pilot reported departing with 18 gallons of fuel onboard and he had sumped the fuel tanks while conducting the preflight checks. Prior to departure, the pilot had checked the carburetor heat and it checked normally. The pilot indicated that it seemed moisture may have gotten into the fuel system. Following the accident, the engine was test run using the airframe fuel system. There were no operational anomalies. Because the airplane rested inverted following the accident, the fuel drained out and was unable to be sampled. The carburetor icing probability chart from Federal Aviation Administration (FAA) Special Airworthiness Information Bulletin (SAIB): CE-09-35 Carburetor Icing Prevention, June 30, 2009, showed a probability of serious icing at cruise power at the temperature and dew point reported at the time of the accident. ## Aircraft - Registration: [N499CC](https://openairdocs.org/aircraft/N499CC), registered now, S/N CC11-00089, built 2012 (OpenAirDocs) - Reported make and model: CUB CRAFTERS INC CC11-100 - Registry model: [Cub Crafters CC11-100](https://openairdocs.org/model/cub-crafters-cc11-100) (registry code 060002H) (OpenAirDocs) - Registry engine: [Continental O-200A](https://openairdocs.org/engine/continental-o-200a) (registry code 17404, 4 cycle) (OpenAirDocs) - Category: Airplane - Serial number: CC11-00089 - Airframe hours: 344 - Engines: Continental Engines O-200A 100 horsepower reciprocating - Damage: Substantial damage - Flight: Personal, Part 91 - Airworthiness certificate: Special, Special light-sport (Special) - Last inspection: Annual, May 7, 2011, 58 hours before - Departed: JPM Airport, OR - Destination: JPM Airport, OR ## Flight crew As NTSB recorded them. NTSB leaves out names. - Pilot; age 70; injuries: none; airline transport; airplane ratings: single-engine sea, single-engine land, multi-engine land; instrument ratings: airplane; medical: sport pilot; last flight review September 28, 2010; seat: front; flight hours: 17,103 total, 344 in this make and model, 18 in the last 90 days, 6 in the last 30 days ## Weather - Conditions: Visual (VMC), Day - Wind: calm - Visibility: 10 statute miles - Lowest ceiling: none - Temperature: 48 °F, dew point 46 °F - Altimeter: 29.94 inHg - Observed at: SLC, 12 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 20120422006399A](https://openairdocs.org/incident/20120422006399A), Apr 22, 2012: Cub Crafters Inc CC11-100, Monmouth, OR, Substantial damage. After takeoff from marr field airport (0OR7) approximately 0.7 miles south the pilot stated the aircraft had a rough running engine. He said he elected to… ## Docket (5 files) The files NTSB released with the investigation on July 4, 2012, on NTSB's docket system: https://data.ntsb.gov/Docket?ProjectID=83464. 1.2 MB in all. - Pilot/Operator Aircraft Accident Report, NTSB Form 6120.1 (item 1, .PDF, 519 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40369964&FileExtension=.PDF&FileName=Pilot%2FOperator%20Aircraft%20Accident%20Report,%20NTSB%20Form%206120.1-Redacted.PDF - Cub Crafters Record of Conversation (item 2, .PDF, 19 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40369965&FileExtension=.PDF&FileName=Cub%20Crafters%20Record%20of%20Conversation-Master.PDF - FAA Record of Conversation (item 3, .PDF, 19 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40370979&FileExtension=.PDF&FileName=FAA%20Record%20of%20Conversation-Master.PDF - Carburetor Icing Probability Chart (item 4, .PDF, 219 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40371652&FileExtension=.PDF&FileName=Carburetor%20Icing%20Probability%20Chart-Master.PDF - Photo 1. Accident Site (Provided by Police) (item 5, .PDF, 396 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40369966&FileExtension=.PDF&FileName=Photo%201.%20Accident%20Site%20(Provided%20by%20Police)-Master.PDF 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.