The Type 143, or Bolivian Scout, was a development of the earlier Vickers Type 141 fighter, with the Type 141's Rolls-Royce Kestrel engine replaced by a Bristol Jupiter VIA, already powering other aircraft used by the Bolivian Air Force, and a stronger undercarriage to cope with the rough airfield surfaces in Bolivia.
The Type 143, or Bolivian Scout, was a modified version of the Vickers Type 141 fighter with key upgrades such as an engine change from Rolls-Royce Kestrel to Bristol Jupiter VIA and reinforced undercarriage, tailored for Bolivia's unique airfield environment.