No fatalities

Four-engine aircraft damaged beyond repair after hard landing in Lisbon (CS-TSB)

Lisbon, PortugalLanding (descent or approach)

On September 3, 1948, a Douglas DC-4 (registration CS-TSB) operated by Air Portugal - Transportes Aéreos Portugueses (TAP) was involved in an aviation accident near Lisbon, Portugal during landing or approach. No fatalities were reported. This summary draws on records from the Bureau of Aircraft Accidents Archives (B3A); 3 related events involving the same aircraft type or operator are linked below.

Sourcesthe Bureau of Aircraft Accidents Archives (B3A)Primary reportUpdated 2026-08-05Data APIEditorial standards

A four-engine aircraft sustained irreparable damage following a hard landing during a local training flight at Lisbon-Portela de Sacavém Airport, with no injuries reported to the crew.

What happened

During a local training sortie operating out of Lisbon-Portela de Sacavém Airport, a four-engine aircraft experienced a hard landing. The specific cause for the abrupt touchdown was not determined in the available records. All five members of the flight crew remained unhurt following the incident. Subsequent inspections of the airframe revealed significant structural issues, leading to the conclusion that the aircraft was damaged beyond repair.

Findings

The investigation into the event did not identify a specific mechanical failure or external factor responsible for the hard landing. The primary outcome of the accident was the total loss of the aircraft due to the impact forces encountered during the uncontrolled touchdown.