What is the maximum braking speed for landing gear retraction?

The maximum braking speed for landing gear retraction in the context of the ERJ 170/175 is indeed 100 KIAS. This limitation is crucial for ensuring that the landing gear can be retracted safely and effectively without compromising aircraft safety and performance.

When the aircraft is nearing the phase of retracting its landing gear after takeoff, it is important to respect this speed because exceeding it could lead to adverse aerodynamic effects or potential structural issues. The 100 KIAS limit provides a safety buffer to allow for adequate control of the aircraft during this critical phase and to reduce the risk of a gear malfunction or failure that could occur if the landing gear were to be retracted at higher speeds.

Staying below this specified maximum speed during gear retraction helps ensure that the gear system operates within its designed limits, thus enhancing the overall safety of the flight operation. It's a clear operational rule that pilots must adhere to for both the integrity of the gear system and the protection of the aircraft's overall airworthiness.