# NTSB MIA96LA122: Grumman G-164A, N4238, Edison, GA, April 18, 1996 - Type: NTSB accident investigation - Classification: Accident · Minor injuries · Limited investigation · Final report - Date: April 18, 1996, 18:00 local (22:00 UTC) - Place: Edison, GA - Location: 31.5608° N, 84.7374° W: Placed by OpenAirDocs: center of Edison, GA, within about 6 miles (OpenAirDocs) - Nearby events: https://openairdocs.org/map.md?lat=31.5608&lon=-84.7374&mi=10 - Phase of flight: [Maneuvering](https://openairdocs.org/ntsb-phases/450) (OpenAirDocs' grouping) - Highest injury: Minor injuries - Injuries: 1 minor - Status: Completed, report July 3, 1996 - Report: Approved by Office Director - NTSB case key (mKey): 38008 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=MIA96LA122 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/38008/pdf - Page: https://openairdocs.org/ntsb/MIA96LA122 ## Probable cause Failure of the mounting studs for the No. 4 cylinder, which resulted in separation of the cylinder and loss of engine power. The lack of suitable terrain for a forced landing was a related factor. ## Sequence of events In NTSB's coding before 2008 (https://www.ntsb.gov/GILS/Documents/codman.pdf). - Loss of engine power(total) - mech failure/malf, maneuvering - aerial application - miscellaneous,bolt/nut/fastener/clamp/spring - failure,total (cause) - engine assembly,cylinder - separation (cause) - Forced landing, descent - emergency - Nose over, landing - roll - terrain condition - none suitable (contributing factor) - terrain condition - soft ## Analysis During an aerial application flight, the studs for the No. 4 cylinder failed, and the cylinder separated from the engine. All engine power was lost. While making a forced landing in a field, the aircraft nosed over. ## Factual narrative On April 18, 1996, about 1800 eastern daylight time, a Grumman G164A, N4238, registered to and operated by Sowega Flying Service, nosed over while making a forced landing in a field near Edison, Georgia, following loss of engine power, while on a 14 CFR Part 137 aerial application flight. Visual meteorological conditions prevailed at the time and no flight plan was filed. The aircraft received substantial damage and the commercial-rated pilot received minor injuries. The flight originated from the Sowega Air Strip, Edison, Georgia, about 20 minutes before the accident. The pilot stated that during an aerial application run the mounting studs for the No. 4 cylinder failed and the cylinder separated from the engine. The engine lost all power. While making a forced landing in a plowed field, the aircraft nosed over. ## Aircraft - Registration: [N4238](https://openairdocs.org/deregistered/N4238-2006-04-07), registration cancelled 2006-04-07, S/N 1006, built 1972 (OpenAirDocs) - Reported make and model: Grumman G-164A - Registry model: [Grumman Acft ENG Cor-Schweizer G-164A](https://openairdocs.org/model/grumman-acft-eng-cor-schweizer-g-164a) (registry code 3952801) (OpenAirDocs) - Registry engine: [Pratt & Whitney R1340 series](https://openairdocs.org/engine/pratt-whitney-r1340-series) (registry code 52016, reciprocating) (OpenAirDocs) - Category: Airplane - Serial number: 1006 - Airframe hours: 4915 - Engines: P&W R-1340-AN1 600 horsepower reciprocating - Damage: Substantial damage - Flight: Aerial application, Part 137 - Registered owner: Sowega Flying Service - Airworthiness certificate: Special, Restricted (Special) - Last inspection: Annual, April 2, 1996, 100 hours before ## Flight crew As NTSB recorded them. NTSB leaves out names. - Pilot; age 55; commercial; airplane ratings: single-engine sea, single-engine land; medical: class 2, valid medical--w/ waivers/lim; seat: left; flight hours: 21,000 total, 11,000 in this make and model, 200 in the last 90 days, 100 in the last 30 days, 6 in the last 24 hours ## Weather - Conditions: Visual (VMC), Day - Wind: 180° at 10 knots - Visibility: 10 statute miles - Lowest ceiling: none - Temperature: 72 °F, dew point 57 °F - Altimeter: 30.00 inHg - Observed at: ABY, 30 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 19960418007839A](https://openairdocs.org/incident/19960418007839A), Apr 18, 1996: Scwzer G164A, Edison, GA, Substantial damage. Made an emergency landing in a field due to engine problems, aircraft hit soft dirt on landing and flipped. (.4)during an aerial application flight, the studs… ## Other investigations on N4238 (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 CHI78DEV24](https://openairdocs.org/ntsb/CHI78DEV24), Mar 27, 1978: Grumman G-164 (N4238), Hudson, IL, substantial damage 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.