# NTSB ERA17LA264: Consolidated Aeronautics Lake LA 4, N747CB, Orlando, FL, July 29, 2017 - Type: NTSB accident investigation - Classification: Accident · No injuries · Limited investigation · Final report - Date: July 29, 2017, 09:30 local (13:30 UTC) - Place: Orlando, FL - Coordinates: 28.546112, -81.332221 (estimated) - Nearby events: https://openairdocs.org/map.md?lat=28.5461&lon=-81.3322&mi=10 - Phase of flight: [Taxi](https://openairdocs.org/ntsb-phases/250) (OpenAirDocs' grouping) - Defining event: [Taxi-from runway: Loss of control on ground](https://openairdocs.org/ntsb-events/230) - Highest injury: No injuries - Injuries: 1 uninjured - Status: Completed, report April 20, 2020 - Report: Approved by Office Director - NTSB office: Eastern Region Aviation - Parties: FAA/FSDO - NTSB case key (mKey): 95737 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=ERA17LA264 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/95737/pdf - NTSB docket: https://data.ntsb.gov/Docket?ProjectID=95737 - Page: https://openairdocs.org/ntsb/ERA17LA264 ## Probable cause A loss of directional control during taxi operations for reasons that could not be determined based on the available information, which resulted in the airplane rolling into a ditch. ## Findings NTSB's coded findings; those marked are part of the probable cause. - [Performance/control parameters: directional control](https://openairdocs.org/ntsb-findings/01062020): Aircraft › Aircraft oper/perf/capability · Not attained/maintained (probable cause); cases with it: [Consolidated Aeronautics LAKE LA-4-200, 5 cases](https://openairdocs.org/ntsb-findings/01062020/cases.md?model=2400108), [All aircraft, 3,958 cases](https://openairdocs.org/ntsb-findings/01062020/cases.md) - [Not determined](https://openairdocs.org/ntsb-findings/05000000): Not determined › Not determined · Unknown/Not determined (probable cause); cases with it: [Consolidated Aeronautics LAKE LA-4-200, 4 cases](https://openairdocs.org/ntsb-findings/05000000/cases.md?model=2400108), [All aircraft, 2,247 cases](https://openairdocs.org/ntsb-findings/05000000/cases.md) - [Terrain: sloped/uneven terrain](https://openairdocs.org/ntsb-findings/03021017): Environmental issues › Physical environment · Effect on operation (probable cause); cases with it: [Consolidated Aeronautics LAKE LA-4-200, 1 case](https://openairdocs.org/ntsb-findings/03021017/cases.md?model=2400108), [All aircraft, 270 cases](https://openairdocs.org/ntsb-findings/03021017/cases.md) - [Experience/qualifications: qualification/certification](https://openairdocs.org/ntsb-findings/02031010): Personnel issues › Experience/knowledge · Pilot; cases with it: [Consolidated Aeronautics LAKE LA-4-200, 1 case](https://openairdocs.org/ntsb-findings/02031010/cases.md?model=2400108), [All aircraft, 280 cases](https://openairdocs.org/ntsb-findings/02031010/cases.md) ## Sequence of events The events NTSB coded, in order, by phase of flight. The defining event best describes what happened. - [Taxi-from runway: Loss of control on ground](https://openairdocs.org/ntsb-events/230) (defining event); cases with it: [Consolidated Aeronautics LAKE LA-4-200, 5 cases](https://openairdocs.org/ntsb-events/230/sequence.md?model=2400108), [All aircraft, 4,585 cases](https://openairdocs.org/ntsb-events/230/sequence.md) - [Taxi-from runway: Collision with terr/obj (non-CFIT) ](https://openairdocs.org/ntsb-events/470); cases with it: [Consolidated Aeronautics LAKE LA-4-200, 4 cases](https://openairdocs.org/ntsb-events/470/sequence.md?model=2400108), [All aircraft, 10,189 cases](https://openairdocs.org/ntsb-events/470/sequence.md) ## Analysis While the noncertificated pilot was taxiing the airplane to a hangar after a local flight, he lost directional control, and the airplane then rolled into a ditch, which resulted in substantial damage to the right wing. The pilot reported that the left brake actuator had failed. A review of the airplane's maintenance logbooks revealed that the last annual inspection was completed more than 10 years before the accident. During postaccident examination of the airplane immediately after the accident, a Federal Aviation Administration inspector could not examine the brakes because of the instability of the airplane on the jacks and because the wheels were covered in mud. The owner did not make the airplane available for further examination; therefore, the reason for the loss of directional control could not be determined. ## Factual narrative On July 29, 2017, about 0930 eastern daylight time, a Consolidated Aeronautics Lake LA-4-200, N747CB, was substantially damaged during taxi at the Orlando Executive Airport (ORL), Orlando, Florida. The pilot was not injured. Visual meteorological conditions prevailed and no flight plan was filed for the local flight. The personal flight was operated under the provisions of 14 Code of Federal Regulations Part 91.According to a Federal Aviation Administration (FAA) inspector, the pilot was taxiing the airplane to a hangar, when he lost control and the airplane rolled into a ditch, where it sustained substantial damage to its right wing. The pilot stated during a telephone interview that the airplane's left brake actuator failed. Following the accident, the airplane's brakes were not inspected by FAA inspectors due to the instability of the airplane on jacks, and because the wheels were covered in mud. The owner elected not to make the airplane available for subsequent inspections, and the condition and functionality of the airplane's brakes could not be assessed. The four-seat, low-wing amphibious airplane, was manufactured in 1976. It was powered by a Lycoming IO-360, 180-horsepower engine. According to the airplane's maintenance logbooks, the last annual inspection was completed on January 25, 2007. The recorded tach time was 253.6 hours and the airframe total time was 3311.2 hours. ## Aircraft - Registration: [N747CB](https://openairdocs.org/aircraft/N747CB), registered now, S/N 754 (OpenAirDocs) - Reported make and model: CONSOLIDATED AERONAUTICS INC. LAKE LA 4 (200) - Registry model: [Consolidated Aeronautics LAKE LA-4-200](https://openairdocs.org/model/consolidated-aeronautics-lake-la-4-200) (registry code 2400108) (OpenAirDocs) - Registry engine: [Lycoming I0360 SER A&C](https://openairdocs.org/engine/lycoming-i0360-ser-a-c) (registry code 41511, reciprocating) (OpenAirDocs) - Category: Airplane - Serial number: 754 - Year built: 1976 - Airframe hours: 3311.2 - Damage: Substantial damage - Flight: Personal, Part 91 - Airworthiness certificate: Standard, Normal - Last inspection: Annual, January 25, 2007 - Departed: ORL, Orlando, FL - Destination: ORL, Orlando, FL - Airport: ORL, Executive - Equipment: Unknown ## Flight crew As NTSB recorded them. NTSB leaves out names. - Pilot; age 67; injuries: none; seat: left ## Weather - Conditions: Visual (VMC), Day - Wind: 250° at 10 knots - Visibility: 10 statute miles - Lowest ceiling: none - Temperature: 25 °F - Altimeter: 29.92 inHg - Observed at: ORL ## 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 20170729010159A](https://openairdocs.org/incident/20170729010159A), Jul 29, 2017: Consolidated Aeronautics Inc. LAKE LA-4-200, Orlando, FL, Substantial damage. N747CB an lake LA-4-200 s/n 754 on 07/29/2017 around 0936 while taxing back to hanger from post flight landing, pilot lost control of the aircraft turning the… ## Docket (5 files) The files NTSB released with the investigation on October 21, 2019, on NTSB's docket system: https://data.ntsb.gov/Docket?ProjectID=95737. 1.6 MB in all. - Maintenance Records (item 1, .PDF, 1.1 MB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40476925&FileExtension=.PDF&FileName=Maintenance%20Records-Master.PDF - FAA Inspector's Statement (item 2, .PDF, 91 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40476926&FileExtension=.PDF&FileName=FAA%20Inspector%27s%20Statement-Master.PDF - Memorandum for Record - Telephone Interview, Pilot (item 3, .PDF, 124 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40476927&FileExtension=.PDF&FileName=Memorandum%20for%20Record%20-%20Telephone%20Interview,%20Pilot-Master.PDF - Memorandum for Record (item 4, .PDF, 124 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40476928&FileExtension=.PDF&FileName=Memorandum%20for%20Record-Master.PDF - Memorandum for Record - Telephone Interview, FAA Inspector (item 5, .PDF, 123 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40476929&FileExtension=.PDF&FileName=Memorandum%20for%20Record%20-%20Telephone%20Interview,%20FAA%20Inspector-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.