# NTSB MIA95LA011: Schweizer SGS 1-34, N7679, Mulberry, FL, October 22, 1994 - Type: NTSB accident investigation - Classification: Accident · No injuries · Limited investigation · Final report - Date: October 22, 1994, 15:25 local (19:25 UTC) - Place: Mulberry, FL - Coordinates: 27.900217, -81.970947 (estimated) - Nearby events: https://openairdocs.org/map.md?lat=27.9002&lon=-81.9709&mi=10 - Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping) - Highest injury: No injuries - Injuries: 1 uninjured - Status: Completed, report March 13, 1995 - Report: Approved by Office Director - NTSB case key (mKey): 37689 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=MIA95LA011 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/37689/pdf - Page: https://openairdocs.org/ntsb/MIA95LA011 ## Probable cause THE FAILURE OF THE PILOT-IN-COMMAND TO PERFORM AN ADEQUATE PREFLIGHT INSPECTION RESULTING IN A LEAKING BRAKE GOING UNDETECTED. THIS RESULTED IN THE FAILURE OF THE BRAKE DUE TO LOSS OF HYDRAULIC FLUID AND COLLISION WITH A SIGN AND A DITCH WHEN THE AIRCRAFT COULD NOT BE STOPPED DURING LANDING ROLLOUT. ## Sequence of events In NTSB's coding before 2008 (https://www.ntsb.gov/GILS/Documents/codman.pdf). - Airframe/component/system failure/malfunction, landing - roll - landing gear,normal brake system - leak - aircraft preflight - inadequate, pilot in command (cause) - fluid,hydraulic - exhaustion - landing gear,normal brake system - failure,total - On ground/water collision with object, landing - roll - object - sign ## Analysis THE AIRCRAFT'S WHEEL BRAKE FAILED DURING LANDING ROLLOUT. THE PILOT WAS UNABLE TO STOP THE AIRCRAFT BEFORE COLLIDING WITH A SIGN AND COMING TO REST IN A DITCH. THE WHEEL BRAKE CYLINDER WAS FOUND TO BE LEAKING AFTER THE ACCIDENT AND ALL HYDRAULIC FLUID HAD LEAKED OUT. THE PILOT DID NOT CHECK THE HYDRAULIC FLUID LEVEL BEFORE FLIGHT. ## Factual narrative On October 22, 1994, about 1525 eastern daylight time, a Schweizer, SGS 1-34, registered to Tampa Bay Soaring Society, lost the brake and collided with a sign post on landing at the South Lakeland Airport, Mulberry, Florida, while on a 14 CFR Part 91 instructional flight. Visual meteorological conditions prevailed and no flight plan was filed. The aircraft received substantial damage and the commercial-rated pilot was not injured. The flight originated at Mulberry, Florida, on October 22, 1994, about 1505. The pilot stated the aircraft touched down about midfield during landing. About 200 feet from the end of the runway, while the glider was moving at a quick walking pace, he applied the brake, which had no effect. He directed the glider to an open area to the right of the runway and the glider struck a sign post and came to rest in a drainage ditch. He stated the brake cylinder developed a leak and lost all hydraulic fluid, and that he did not check the brake fluid before the flight. ## Aircraft - Registration: [N7679](https://openairdocs.org/deregistered/N7679-2014-11-18), registration cancelled 2014-11-18, S/N 59, built 1971 (OpenAirDocs) - Reported make and model: SCHWEIZER SGS 1-34 - Registry model: [Schweizer SGS 1-34](https://openairdocs.org/model/schweizer-sgs-1-34) (registry code 8050146) (OpenAirDocs) - Registry engine: [NONE](https://openairdocs.org/engine/none) (registry code 00000, none) (OpenAirDocs) - Category: Glider - Serial number: 59 - Engines: unknown - Damage: Substantial damage - Flight: Instructional, Part 91 - Registered owner: Tampa Bay Soaring Society - Airworthiness certificate: Standard, Normal - Last inspection: Annual, February 23, 1994, 143 hours before - Airport: X49, South Lakeland, runway 14, 4,025 × 100 ft, grass/turf ## Flight crew As NTSB recorded them. NTSB leaves out names. - Pilot; age 38; commercial; airplane ratings: multi-engine land, single-engine land; instrument ratings: airplane; medical: class 2, valid medical--w/ waivers/lim; seat: center; flight hours: 410 total, 5 in this make and model, 355 as pilot in command, 13 in the last 90 days, 5 in the last 30 days, 1 in the last 24 hours ## Weather - Conditions: Visual (VMC), Day - Wind: calm - Visibility: 25 statute miles - Lowest ceiling: none - Temperature: 82 °F - Observed at: 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 19941022038429A](https://openairdocs.org/incident/19941022038429A), Oct 22, 1994: Scwzer SGS134, Mulberry, FL, Substantial damage. No brake on landing. Turned off runway avoid overrum. Struck sign and ditch leaky brake cylinder. Lost all fluid. ## Other investigations on N7679 (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 MIA00LA239](https://openairdocs.org/ntsb/MIA00LA239), Aug 16, 2000: Schweizer SGS 1-34 (N7679), Zephyrhills, FL, substantial damage. Probable cause: The student pilot's failure to maintain airspeed on final approach resulting in an inadvertent stall/spin and subsequent in-flight collision with terrain. 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.