On July 4, 1988, a Bell 47D1 (registration N903B) operated by Agri Flex, Inc. was involved in an aviation accident near Ruleville, MS. Investigators recorded the probable cause as: The pilot's inability to complete an autorotation due to insufficient altitude and airspeed after an unexplained engine failure during aerial application operations. This summary draws on records from the U.S. National Transportation Safety Board (NTSB) historical archive.
An aircraft experienced an unexpected engine failure while conducting aerial application operations. The pilot attempted to autorotate but lacked sufficient altitude and airspeed, resulting in a hard landing and nose-over in a crop field.
What happened
During an aerial application flight involving the spraying of chemicals, the pilot reported that the aircraft engine quit unexpectedly. At the time of the failure, the aircraft was operating in a low-level agricultural environment.
The pilot immediately attempted to initiate an autorotation to maintain control and land safely. However, the aircraft was at an altitude and airspeed too low to complete the maneuver successfully. The aircraft impacted the ground hard in a field of crops and subsequently nosed over.
The investigation
A post-accident examination of the engine was conducted to determine the cause of the power loss. The inspection did not reveal any mechanical defects or reasons that would explain the sudden cessation of power.
Probable cause
The pilot's inability to complete an autorotation due to insufficient altitude and airspeed after an unexplained engine failure during aerial application operations.
Frequently asked questions
What happened in the 4 Jul 1988 Bell 47D1 accident near Ruleville, MS?
An aircraft experienced an unexpected engine failure while conducting aerial application operations. The pilot attempted to autorotate but lacked sufficient altitude and airspeed, resulting in a hard landing and nose-over in a crop field.
What aircraft was involved and where did it happen?
The accident on 4 Jul 1988 involved a Bell 47D1, registration N903B, operated by Agri Flex, Inc., at Ruleville, MS.
What was the probable cause of the accident?
The pilot's inability to complete an autorotation due to insufficient altitude and airspeed after an unexplained engine failure during aerial application operations.
A SkyWalk Join't 3 paraglider crashed into the ground near Las Vizcachas, Chile, on September 1, 2024. The pilot and passenger sustained serious spinal…
PARAPENTE (ULTRALIVIANO NO MOTORIZADO)·2024-09-01DGAC Chile
A Cessna 172N struck electrical cables while on final approach to land at Aucó Aerodrome in Chile. The pilot was uninjured, but the aircraft sustained damage…
A Bombardier DHC-8-402 suffered a tail strike during landing at Puerto Williams on September 9, 2024. All 76 occupants were unharmed, but the aircraft…
A MYD JS-MD 3 glider veered off the runway and struck a wall at Vitacura Aerodrome on January 6, 2025. The pilot was uninjured, but the aircraft sustained…
A recreational paraglider flight in Puchuncaví, Chile, ended with the pilot sustaining serious injuries after a rapid descent and impact with a hillside on…
PARAPENTE (ULTRALIVIANO NO MOTORIZADO)·2025-03-29DGAC Chile
A Tecnam P2006T landed on its belly at an aerodrome in Poland after the crew failed to confirm landing gear deployment. The incident resulted in no injuries…