On May 3, 2019, at 2142 eastern daylight time, Miami Air flight 293, a Boeing 737-81Q, registration N732MA, departed the end of runway 10 at Jacksonville Naval Air Station (KNIP), Jacksonville, Florida, and came to rest in shallow water in St. Johns River. There were no serious injuries to the 142 passengers and crew onboard. The airplane was substantially damaged. The airplane was operated by Miami Air International as a Title 14 Code of Federal Regulations Part 121 supplemental non-scheduled passenger flight from Leeward Point Field (MUGM), Guantanamo Bay, Cuba, to KNIP.
An extreme loss of braking friction due to heavy rain and the water depth on the ungrooved runway, which resulted in viscous hydroplaning. Contributing to the accident was the operator’s inadequate guidance for evaluating runway braking conditions and conducting en route landing distance assessments. Contributing to the continuation of an unstabilized approach were 1) the captain’s plan continuation bias and increased workload due to the weather and performing check airman duties and 2) the first officer’s lack of experience.
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