One engine in steam

{
  "id": "MLC-T-IND-003994",
  "term": "One engine in steam",
  "field": "Industrial and trades",
  "definition": "The condition of a multi-engine vehicle or power system operating with only a single engine active, while others are shut down or have failed. This state results in reduced performance, speed, or overall capability, and is an indicator of a mechanical problem requiring attention. The phrase originated in railroading with steam locomotives but is now applied more broadly to trucks, boats, and aircraft with multiple power units.",
  "subject": "Shop talk and trade slang",
  "translations": {
    "de": "one engine in steam",
    "es": "una máquina en vía",
    "fr": "un seul moteur en chauffe"
  },
  "url": "https://mlchart.com/terminology/industrial/one-engine-in-steam/"
}