# NTSB MIA05LA103: American General AG-5B, N1193G, St. Augustine, FL, May 12, 2005 - Type: NTSB accident investigation - Classification: Accident · No injuries · Limited investigation · Final report - Date: May 12, 2005, 09:55 local (13:55 UTC) - Place: St. Augustine, FL - Coordinates: 29.953611, -81.328887 - Nearby events: https://openairdocs.org/map.md?lat=29.9536&lon=-81.3289&mi=10 - Phase of flight: [Approach](https://openairdocs.org/ntsb-phases/500) (OpenAirDocs' grouping) - Highest injury: No injuries - Injuries: 1 uninjured - Status: Completed, report August 29, 2006 - Report: Approved by Office Director - Parties: FAA Flight Standards District Office - NTSB case key (mKey): 61482 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=MIA05LA103 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/61482/pdf - Page: https://openairdocs.org/ntsb/MIA05LA103 ## Probable cause The separation of the throttle control for undetermined reasons, and the unsuitable terrain encountered by the pilot during the forced landing, resulting in a nose-over after touchdown. ## Sequence of events In NTSB's coding before 2008 (https://www.ntsb.gov/GILS/Documents/codman.pdf). - Loss of engine power, approach - vfr pattern - final approach - throttle/power lever,linkage - separation - Forced landing, descent - emergency - In flight collision with terrain/water, emergency descent/landing - unsuitable terrain or takeoff/landing/taxi area - encountered, pilot in command - terrain condition - swampy - Nose over, emergency landing ## Analysis The pilot stated that the preflight, takeoff, and flight en route to the St. Augustine Airport were normal. He contacted the tower when the flight was about 10 miles west and was advised to fly left base for runway 31. The tower cleared him to land when the controller had a visual with the aircraft, and he turned base at about 1,200 feet. He slowed the airplane and lowered flaps, and while on final approach he applied power to adjust the sink rate but the throttle "... was just loose in my hand (like it completely disconnected from the carburetor)." Unable to increase power, he advised the tower of the situation, and after recognizing that he was unable to land on the runway, ditched the aircraft in a marsh short of the runway. The airplane flipped inverted during touchdown and he exited and signaled to rescue personnel that he was okay. According to the FAA airworthiness inspector who examined the airplane, the carburetor linkage separated from the carburetor at the ball assembly. Examination of the ball assembly revealed no signs of excessive wear. No determination was made as to the reason for the separation. ## Factual narrative On May 12, 2005, about 0955 eastern daylight time, an American General AG-5B, N1193G, registered to and operated by a private individual, experienced a loss of engine throttle control resulting in a forced landing short of the approach end of runway 31, at St. Augustine Airport, St. Augustine, Florida. Visual meteorological conditions prevailed at the time and no flight plan was filed for the 14 CFR Part 91 personal flight from Haller Airpark, Green Cove Springs, Florida, to St. Augustine, Florida. The airplane was substantially damaged and the private-rated pilot, the sole occupant, was not injured. The flight originated about 0930, from Haller Airpark. The pilot stated that the preflight, takeoff, and flight en route to the St. Augustine Airport were normal. He contacted the tower when the flight was about 10 miles west and was advised to fly left base for runway 31. The tower cleared him to land when the controller had a visual with the aircraft, and he turned base at about 1,200 feet. He slowed the airplane and lowered flaps, and while on final approach he applied power to adjust the sink rate but the throttle "... was just loose in my hand (like it completely disconnected from the carburetor)." Unable to increase power, he advised the tower of the situation, and after recognizing that he was unable to land on the runway, ditched the aircraft in a marsh short of the runway. The airplane flipped inverted during touchdown and he exited and signaled to rescue personnel that he was okay. According to the FAA airworthiness inspector who examined the airplane, the carburetor linkage separated from the carburetor at the ball assembly. Examination of the ball assembly revealed no signs of excessive wear. No determination was made as to the reason for the separation. ## Aircraft - Registration: [N1193G](https://openairdocs.org/deregistered/N1193G-2013-03-21), registration cancelled 2013-03-21, S/N 10063 (OpenAirDocs) - Reported make and model: American General Aircraft AG-5B - Registry model: [American General Acft AG5B](https://openairdocs.org/model/american-general-acft-ag5b) (registry code 3990100) (OpenAirDocs) - Category: Airplane - Serial number: 10063 - Airframe hours: 1362 - Engines: Lycoming O-360-A4K 180 horsepower reciprocating - Damage: Substantial damage - Flight: Personal, Part 91 - Registered owner: Claude A. Allen III - Airworthiness certificate: Standard, Utility; Standard, Normal - Last inspection: Annual, March 1, 2005, 20 hours before - Departed: 7FL4, Green Cove Sprg, FL - Destination: KSGJ, St. Augustine, FL - Airport: SGJ, St Augustine Airport ## Flight crew As NTSB recorded them. NTSB leaves out names. - Pilot; age 59; injuries: none; private; airplane ratings: single-engine land; instrument ratings: airplane; medical: class 3, with waivers/limitations; last flight review October 1, 2004; seat: left; flight hours: 1,619 total, 800 in this make and model, 1,449 as pilot in command, 33 in the last 90 days, 20 in the last 30 days, 1 in the last 24 hours ## Weather - Conditions: Visual (VMC), Day - Wind: calm - Visibility: 10 statute miles - Lowest ceiling: none - Temperature: 79 °F, dew point 63 °F - Altimeter: 30.13 inHg - Observed at: KSGJ ## 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 20050512008239A](https://openairdocs.org/incident/20050512008239A), May 12, 2005: Amrgen AG5B, St Augustine, FL, Substantial damage. (-23) During approach to sgj runway 31 the pilot reported a loss of throttle control and subsequently landed in the marsh approx. 200 yards short of the… 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.