NTSB docket on Philadelphia Learjet medevac crash highlights somatogravic illusion and pitch-trim setting

The National Transportation Safety Board has released the public docket for the 31 January 2025 Learjet 55 medevac crash in Philadelphia, adding a large body of factual material to the investigation without reaching a cause finding. The accident involved Jet Rescue Air Ambulance’s Learjet 55 and occurred shortly after departure from Northeast Philadelphia Airport, with the aircraft coming down in the Cottman Avenue and Roosevelt Mall area.

The newly filed records include videos, images and detailed data covering the jet’s final seconds. Coverage of the docket release points to somatogravic illusion, spatial disorientation and the aircraft’s pitch-trim setting as key lines of inquiry, with investigators looking at whether low visibility, night operations and rapid acceleration may have contributed to loss of control after take-off.

All six people aboard the aircraft died, along with two people on the ground. The NTSB has kept the case open for more than a year, and the docket does not identify a probable cause or assign contributing factors. For air-ambulance operators, the case underscores the operational risks tied to cockpit workload, aircraft configuration and departure performance in low-visibility conditions.