# NTSB MIA07LA109: Cessna 172RG, N522GC, Lantana, FL, June 10, 2007 - Type: NTSB accident investigation - Classification: Accident · No injuries · Limited investigation · Final report - Date: June 10, 2007, 19:30 local (23:30 UTC) - Place: Lantana, FL - Coordinates: 26.595556, -80.082496 - Nearby events: https://openairdocs.org/map.md?lat=26.5956&lon=-80.0825&mi=10 - Phase of flight: [Approach](https://openairdocs.org/ntsb-phases/500) (OpenAirDocs' grouping) - Highest injury: No injuries - Injuries: 1 uninjured - Status: Completed, report February 28, 2008 - Report: Approved by Office Director - Parties: FAA FSDO - NTSB case key (mKey): 66081 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=MIA07LA109 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/66081/pdf - Page: https://openairdocs.org/ntsb/MIA07LA109 ## Probable cause Separation of a landing gear hydraulic line at the fitting for undetermined reasons. ## Sequence of events In NTSB's coding before 2008 (https://www.ntsb.gov/GILS/Documents/codman.pdf). - Airframe/component/system failure/malfunction, approach - hydraulic system,line - separation - reason for occurrence undetermined (cause) - fluid,hydraulic - exhaustion - Gear collapsed, landing - roll - terrain condition - loose gravel/sandy ## Analysis The pilot stated that the landing gear would not go down, and there was no green indication for the landing gear indicators. He said he looked out the left window and the main gear was not extended, and that attempts at lowering the landing gear caused the circuit breaker to "trip." Pushing the circuit breaker back in was also ineffective in lowering the landing gear. He said he initiated emergency procedures to extend the landing gear, and the hand pump also failed to extend the landing gear. After recycling and pumping the landing gear for about 20 minutes, he said that it became clear to him that the landing gear would not extend, and he did not know if the right main and nose gear were extended. During the landing he said that he slowly brought the airplane to the ground so as not to cause a propeller strike, and later found that the landing gear was partially extended, causing the airplane to veer off the runway into the rough gravel and sand, incurring damage. After recovery the airplane was examined by an FAA licensed airframe and powerplant mechanic, who found that the hydraulic line on the down-lock side of the nose actuator had separated at the fitting, which had resulted in a total loss of hydraulic fluid, and the landing gear collapsing. ## Factual narrative On June 18, 2007, about 1930 eastern daylight time, a Cessna 172RG, N522GC, registered to and operated by a private individual as a Title 14 CFR Part 91 personal flight, incurred damage while landing at Lantana, Florida. Visual meteorological conditions prevailed, and no flight plan was filed. The private-rated pilot was not injured, and the airplane incurred substantial The flight originated in Daytona Beach, Florida, the same day, about 1720. The pilot stated that after entering the pattern to land at Lantana, Florida, and initiating prelanding procedures, it became clear to him that there was a problem with the landing gear. He said that the landing gear would not go down, and there was no green indication for the landing gear indicators. He looked out the left window and noted that the main gear was not extended, and that attempts at lowering the gear caused the circuit breaker to "trip." Pushing the circuit breaker back in was also ineffective in lowering the landing gear. He said he initiated emergency procedures to extend the landing gear, and in doing so the hand pump also failed to extend the landing gear. After recycling and pumping the landing gear for about 20 minutes, he said that it became clear to him that the landing gear would not extend. He said he did not know that the right main and nose gear were extended. Having completed three hours of flying, and with about one hour remaining before darkness, he said he made the decision to land the airplane on runway 15 at the Lantana Airport. During the landing the pilot said that he slowly brought the airplane to the ground so as not to cause a propeller strike, and later found out that the landing gear was partially extended, which caused the airplane to veer to the left, off the runway into the rough gravel and sand, during the landing rollout. Prior to this event the pilot said that the landing gear had been functioning flawlessly. The airplane incurred damage to the fuselage, wings, landing gear and tail section. After recovery the airplane was taken to a maintenance facility at the airport, and was examined by an FAA licensed airframe and powerplant mechanic. The inspection revealed that the hydraulic line on the down-lock side of the nose actuator had separated at the fitting, which had resulted in a total loss of hydraulic fluid, and the landing gear collapsing. ## Aircraft - Registration: [N522GC](https://openairdocs.org/aircraft/N522GC), registered now, S/N 172RG0091, built 1979 (OpenAirDocs) - Reported make and model: Cessna 172RG - Registry model: [Cessna 172RG](https://openairdocs.org/model/cessna-172rg) (registry code 2072438) (OpenAirDocs) - Registry engine: [Lycoming O&VO-360 series](https://openairdocs.org/engine/lycoming-o-vo-360-series) (registry code 41514, reciprocating) (OpenAirDocs) - Category: Airplane - Serial number: 172RG0091 - Airframe hours: 3088 - Engines: Lycoming O-360-F1HG 180 horsepower reciprocating - Damage: Substantial damage - Flight: Personal, Part 91 - Registered owner: Corkins Research LLC - Airworthiness certificate: Standard, Normal - Last inspection: Annual, June 1, 2006, 90 hours before - Departed: DAB, Daytona beach, FL - Destination: LNA, Lantana, FL - Airport: LNA, Palm Beach County Park, runway 15, 3,421 × 100 ft, asphalt ## Flight crew As NTSB recorded them. NTSB leaves out names. - Pilot; age 61; injuries: none; private; airplane ratings: single-engine land; medical: class 3; last flight review September 1, 2005; seat: left; flight hours: 233 total, 160 in this make and model, 173 as pilot in command, 15 in the last 90 days ## Weather - Conditions: Visual (VMC), Dusk - Wind: 140° at 8 knots - Visibility: 10 statute miles - Lowest ceiling: none - Temperature: 99 °F - Observed at: LNA 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.