What is the minimum ambient temperature allowed for takeoff and landing in the ERJ 170/175?

The minimum ambient temperature allowed for takeoff and landing in the ERJ 170/175 is indeed -40 degrees Celsius. This limitation is critical for ensuring the safety and performance of the aircraft during these phases of flight. Operating at such low temperatures ensures the aircraft systems, including engines and control surfaces, remain functional and responsive.

Temperature performance is crucial for various systems, including engine start and operation, as well as for structural integrity. The aircraft is certified to operate in conditions as extreme as -40 degrees Celsius, meaning it has been tested and approved for safe performance in very cold environments. This ensures that pilots can confidently operate the aircraft in regions where such temperatures might occur, provided other operational limitations are also met.