# NTSB MIA92LA188: Cessna 210L, N777BK, Orlando, FL, September 21, 1992 - Type: NTSB accident investigation - Classification: Accident · No injuries · Limited investigation · Final report - Date: September 21, 1992, 10:55 local (14:55 UTC) - Place: Orlando, FL - Location: 28.5455° N, 81.3329° W: Placed by OpenAirDocs at ORLANDO EXEC (ORL), within about a mile (OpenAirDocs) - Nearby events: https://openairdocs.org/map.md?lat=28.5455&lon=-81.3329&mi=10 - Phase of flight: [Approach](https://openairdocs.org/ntsb-phases/500) (OpenAirDocs' grouping) - Highest injury: No injuries - Injuries: 1 uninjured - Status: Completed, report September 14, 1993 - Report: Approved by Office Director - NTSB case key (mKey): 33141 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=MIA92LA188 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/33141/pdf - Page: https://openairdocs.org/ntsb/MIA92LA188 ## Probable cause FAILURE OF THE RIGHT MAIN LANDING GEAR ACTUATOR DUE TO OVERSTRESS FOR UNDETERMINED REASONS WHICH RESULTED IN LOSS OF ALL LANDING GEAR SYSTEM HYDRAULIC FLUID WHICH IN TURN RESULTED IN THE PILOT BEING UNABLE TO EXTEND AND LOCK THE LANDING GEAR. ## Sequence of events In NTSB's coding before 2008 (https://www.ntsb.gov/GILS/Documents/codman.pdf). - Airframe/component/system failure/malfunction, approach - landing gear,normal retraction/extension assembly - ruptured (cause) - landing gear,normal retraction/extension assembly - undetermined (cause) - fluid,hydraulic - loss,total (cause) - landing gear,normal retraction/extension assembly - failure,total (cause) - Main gear collapsed, landing - flare/touchdown - gear extension - not possible, pilot in command (cause) ## Analysis FLIGHT WAS UNABLE TO GET SAFE INDICATION FOR LANDING GEAR EXTENDED WHILE APPROACHING DESTINATION AIRPORT. FLIGHT RETURNED TO DEPARTURE AIRPORT. AFTER ACCOMPLISHING EMERGENCY PROCEDURES FOR GEAR EXTENSION, GEAR SAFE INDICATION WAS STILL NOT OBTAINED. PILOT DETERMINED ALL HYDRAULIC FLUID HAD BEEN LOST. FLIGHT WAS LANDED WITH THE NOSE GEAR LOCKED AND THE MAIN GEARS PARTIALLY EXTENDED. POSTLANDING EXAMINATION REVEALED RIGHT MAIN GEAR HYDRAULIC ACTUATOR HAD FAILED DUE TO OVERSTRESS ALONG METAL GRAIN BOUNDARIES AND AT AREA OF LOW WALL THICKNESS. ALL HYDRAULIC SYSTEM PRESSURE WERE FOUND TO BE NORMAL AND NO OTHER LANDING GEAR SYSTEM FAILURES WERE FOUND. AFTER FAILURE OF THE GEAR ACTUATOR ALL NORMAL AND EMERGENCY SYSTEM FLUID WAS LOST THROUGH THE ACTUATOR. ## Aircraft - Registration: [N777BK](https://openairdocs.org/deregistered/N777BK-2014-06-05), registration cancelled 2014-06-05, S/N 21060560, built 1974 (OpenAirDocs) - Reported make and model: CESSNA 210L - Registry model: [Cessna 210L](https://openairdocs.org/model/cessna-210l) (registry code 2073448) (OpenAirDocs) - Registry engine: [Continental IO-520 series](https://openairdocs.org/engine/continental-io-520-series) (registry code 17032, reciprocating) (OpenAirDocs) - Category: Airplane - Serial number: 21060560 - Airframe hours: 3809 - Engines: CONTINENTAL IO-520-L 285 horsepower reciprocating - Damage: Substantial damage - Flight: Part 135 - Operator: Flight Express, Inc. - Registered owner: Flight Express, Inc. - Airworthiness certificate: Standard, Normal - Last inspection: Annual, January 23, 1992, 562 hours before - Departed: ORL - Destination: TLH, TALLAHASSEE, FL - Airport: ORL, Orlando Executive, runway 31, 4,638 × 100 ft, asphalt ## Flight crew As NTSB recorded them. NTSB leaves out names. - Pilot; age 51; commercial; airplane ratings: single-engine land, multi-engine land; instrument ratings: helicopter, airplane; medical: class 2, valid medical--w/ waivers/lim; seat: left; flight hours: 9,000 total, 1,500 in this make and model, 7,000 as pilot in command, 300 in the last 90 days, 100 in the last 30 days, 6 in the last 24 hours ## Weather - Conditions: Visual (VMC), Day - Wind: 260° at 4 knots - Visibility: 7 statute miles - Lowest ceiling: none - Temperature: 86 °F, dew point 75 °F - Altimeter: 29.00 inHg - Observed at: ORL, 1 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 19920921041129A](https://openairdocs.org/incident/19920921041129A), Sep 21, 1992: Cessna 210L, Orlando, FL, Substantial damage. Unable to lock gear down. Landed. Gear collapsed. Gear actuator housing was cracked from stress. Lost fluid. ## Other investigations on N777BK (1) 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. - [NTSB ERA14LA051](https://openairdocs.org/ntsb/ERA14LA051), Nov 28, 2013: Cessna 210L (N777BK), Montrose, PA, substantial damage. Probable cause: The pilot’s failure to check the fuel tanks for contaminants after fueling, which resulted in a total loss of engine power due to water contamination. 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.