# NTSB CEN21LA382: Beech A36, N67CW, Granbury, TX, August 24, 2021 - Type: NTSB accident investigation - Classification: Accident · No injuries · Class 3 · Limited · Final report - Date: August 24, 2021, 10:30 local (15:30 UTC) - Place: Granbury, TX - Coordinates: 32.340946, -97.646717 (estimated) - Nearby events: https://openairdocs.org/map.md?lat=32.3409&lon=-97.6467&mi=10 - Phase of flight: [Takeoff](https://openairdocs.org/ntsb-phases/300) (OpenAirDocs' grouping) - Defining event: [Takeoff: Loss of engine power (total)](https://openairdocs.org/ntsb-events/341) - Highest injury: No injuries - Injuries: 1 uninjured - Status: Completed - Report: Approved by Office Director - Investigation class: Class 3 - NTSB office: Central Region - Parties: FAA FSDO - NTSB case key (mKey): 103747 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=CEN21LA382 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/103747/pdf - NTSB docket: https://data.ntsb.gov/Docket?ProjectID=103747 - Page: https://openairdocs.org/ntsb/CEN21LA382 ## Probable cause The loss of engine power for reasons that could not be determined with the available information. ## Findings NTSB's coded findings; those marked are part of the probable cause. - [Power plant](https://openairdocs.org/ntsb-findings/01057100): Aircraft › Aircraft power plant · Unknown/Not determined (probable cause); cases with it: [Beech A36, 2 cases](https://openairdocs.org/ntsb-findings/01057100/cases.md?model=1151604), [All aircraft, 198 cases](https://openairdocs.org/ntsb-findings/01057100/cases.md) ## Sequence of events The events NTSB coded, in order, by phase of flight. The defining event best describes what happened. - [Takeoff: Loss of engine power (total)](https://openairdocs.org/ntsb-events/341) (defining event); cases with it: [Beech A36, 56 cases](https://openairdocs.org/ntsb-events/341/sequence.md?model=1151604), [All aircraft, 3,820 cases](https://openairdocs.org/ntsb-events/341/sequence.md) - [Landing-flare/touchdown: Off-field or emergency landing](https://openairdocs.org/ntsb-events/440); cases with it: [Beech A36, 47 cases](https://openairdocs.org/ntsb-events/440/sequence.md?model=1151604), [All aircraft, 3,365 cases](https://openairdocs.org/ntsb-events/440/sequence.md) ## Analysis The pilot reported that shortly after departure the airplane’s engine lost power. The pilot selected a nearby field for a forced landing. An initial inspection of the airplane noted damage to the airplane’s wings and fuselage. Fuel was available in the airplane’s fuel tanks, and the engine had about 8 quarts of oil in it. After the airplane was recovered, a visual inspection of the engine did not reveal any pre-impact abnormities. A test run of the engine was subsequently conducted and the engine ran at various power settings and no anomalies were noted. An examination of the fuel system revealed no anomalies. Before and after the test run, data from an onboard engine monitor was downloaded. The data did not illustrate any abnormalities with either the cylinder head temperature or exhaust gas temperatures that were recorded; the total loss of power was evident. No abnormalities were noted during the engine test run and the engine appeared to make rated power. A reason for the loss of engine power could not be determined with the available information. ## Factual narrative On August 24, 2021, about 1030 central daylight time, a Beech A36 airplane, N67CW, was substantially damaged when it was involved in an accident near Granbury, Texas. The pilot was not injured. The airplane was operated as a Title 14 Code of Federal Regulations Part 91 personal flight. The pilot reported to the responding Federal Aviation Administration (FAA) inspector that shortly after departure from the Pecan Plantation Airport (0TX1), the engine lost power. The pilot selected a nearby field for a forced landing. An inspection of the airplane by the FAA inspector noted damage to the airplane’s wings and fuselage. Fuel was available in the airplane’s fuel tanks and the fuel selector was positioned to the left tank. The engine had about 8 quarts of oil in it. (See figure 1) Figure 1: Accident airplane FAA photo During recovery of the airplane, about 80 gallons of fuel, split evenly between the fuel tanks, were recovered from the airplane. After the wreckage was recovered, an examination and test run were conducted. The fuselage, minus the wings, was strapped down to a trailer. The top engine cowling was removed, and a visual inspection of the engine did not reveal any pre-impact abnormalities. A fuel canister was connected to the airplane’s fuel line on the airplane’s left side. The engine started without hesitation or delay and was then warmed up at idle rpm. The throttle was advanced, and a magneto check was completed; no anomalies were noted. Full throttle was then applied, and the engine responded accordingly. Before and after the test run, data from the engine monitor was downloaded. The data did not illustrate any abnormalities with either the cylinder head temperature or exhaust gas temperatures that were recorded; the total loss of power was evident. The airplane’s fuel tanks, and main fuel strainer were checked for contaminates/blockage. No abnormalities were noted during the examination and engine test run and the engine appeared to make rated power. ## Aircraft - Registration: [N67CW](https://openairdocs.org/deregistered/N67CW-2023-02-04), registration cancelled 2023-02-04, S/N E-1069, built 1977 (OpenAirDocs) - Reported make and model: BEECH A36 - Registry model: [Beech A36](https://openairdocs.org/model/beech-a36) (registry code 1151604) (OpenAirDocs) - Registry engine: [Continental IO-520 series](https://openairdocs.org/engine/continental-io-520-series) (registry code 17032, reciprocating) (OpenAirDocs) - Category: Airplane - Serial number: E-1069 - Year built: 1977 - Airframe hours: 4499 - Engines: Continental IO-550 B 300 horsepower reciprocating - Damage: Substantial damage - Flight: Personal, Part 91 - Operator: Humanity2others LLC - Registered owner: Humanity2others LLC - Airworthiness certificate: Standard, Utility - Last inspection: Annual, August 10, 2020 - Destination: KBAZ, New Braunfels, TX - Airport: 0TX1, Pecan Plantation - Equipment: Electronic primary flight display, Electronic multifunction display, Auto-pilot, ADS-B, Stall warning system ## Flight crew As NTSB recorded them. NTSB leaves out names. - Pilot; age 58; injuries: none; airline transport, commercial; airplane ratings: single-engine land, multi-engine land; instrument ratings: airplane; medical: class 1, without waivers/limitations; last flight review February 28, 2021; seat: left; flight hours: 2,100 total, 251 in this make and model, 6,000 as pilot in command, 295 in the last 90 days, 99 in the last 30 days, 2 in the last 24 hours ## Weather - Conditions: Visual (VMC), Day - Wind: 170° at 7 knots - Visibility: 10 statute miles - Lowest ceiling: none - Temperature: 88 °F, dew point 68 °F - Altimeter: 30.04 inHg - Observed at: KGDJ, 11 nm away - METAR: KGDJ 241535Z AUTO 17007KT 10SM CLR 31/20 A3004 RMK AO2 T0310020 ## 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 20210824019079A](https://openairdocs.org/incident/20210824019079A), Aug 24, 2021: Beech A36, Cleburne, TX, Substantial damage. Aircraft performed taxi and run-up with out issue for PIC. Shortly after take-off aircraft experienced and engine failure and pilot was forced to land in an… ## Docket (8 files) The files NTSB released with the investigation on January 13, 2022, on NTSB's docket system: https://data.ntsb.gov/Docket?ProjectID=103747. 5.7 MB in all. - Pilot/operator aircraft accident report, NTSB form 6120.1 (item 1, PDF, 9 pages, 1.4 MB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=12680272&FileExtension=pdf&FileName=6120_Redacted-Rel.pdf - Photos (item 2, PDF, 2 pages, 1.5 MB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=12680968&FileExtension=pdf&FileName=Photo%201-Rel.pdf - Examination summary (item 3, PDF, 5 pages, 1.9 MB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=12681350&FileExtension=pdf&FileName=Examination%20Summary%20--Rel.pdf - Accident flight engine monitor graph (item 4, PDF, 1 page, 107 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=12681205&FileExtension=pdf&FileName=EM%20accident%20flight-Rel.pdf - Engine monitor data (accident flight) (item 5, CSV, 10 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=12681360&FileExtension=csv&FileName=Flt921-Rel.csv - Engine monitor data (test run) (item 6, CSV, 9 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=12681067&FileExtension=csv&FileName=Flt923-Rel.csv - Investigation notes (item 7, PDF, 1 page, 550 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=12682050&FileExtension=pdf&FileName=Investigation%20notes_Redacted-Rel.pdf - Release of aircraft wreckage, NTSB form 6120.15 (item 8, PDF, 1 page, 186 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=12680897&FileExtension=pdf&FileName=N67CW%20Signed%20NTSB%20Wreckage%20Release%20Form_Redacted-Rel.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.