Serious Incident Involving Tecnam P2006T SP-MMB at EPBC

Overview and Flight History On 23 May 2022, a Tecnam P2006T with registration SP-MMB, operated by Ventum Air Sp. z o.o., was conducting a training flight from EPBC aerodrome. The flight crew consisted of a student pilot and a flight instructor. The aircraft took off at 15:05 LMT, and the flight was initially uneventful. ## Incident Description After returning to EPBC, the crew initiated the landing gear extension procedure. Despite moving the landing gear lever to the “down” position multiple times, the extended gear signal did not appear. The crew executed the “EMERGENCY CHECKLIST LDG GEAR” procedure, but the alternate landing gear extension system failed. The crew reported the issue to the flight coordinator and performed a low pass over the aerodrome. Ground observers confirmed that the landing gear remained retracted. Fire assistance was provided, and the aircraft landed on a grass runway with the gear retracted, resulting in damage to the lower fuselage skin. ## Damage and Injuries The incident caused damage to the lower skin of the airframe, including the main landing gear nacelles. No fatalities, serious, or minor injuries were reported among the two crew members. ## Investigation and Cause The State Commission on Aircraft Accidents Investigation (PKBWL) determined that the cause of the occurrence was inappropriate components used by the manufacturer in the landing gear extension and retraction system. Contributing factors included errors in the alternate landing gear extension procedure and insufficient securing of the lever mounted on the shaft of the first discharge valve against spontaneous loosening. ## Safety Recommendations PKBWL issued four safety recommendations addressed to the aircraft manufacturer, Costruzioni Aeronautiche Tecnam.