AMC 25.149(f) Minimum Control Speed during Approach and Landing (VMCL)

• ED Decision 2020/024/R found in: CS-25 Amdt 27 - Large Aeroplanes (Jan 2023)

AMC 25.149(f) Minimum Control Speed during Approach and Landing (VMCL) ED Decision 2020/024/R (a) [CS 25.149(f)](#_DxCrossRefBm1709820669) is intended to ensure that the aeroplane is safely controllable following an engine failure during an all-engines-operating approach and landing. From a controllability standpoint, the most critical case usually consists of an engine failing after the power or thrust has been increased to perform a go-around from an all-engines-operating approach. (b) To determine VMCL, the flap and trim settings should be appropriate to the approach and landing configurations, the power or thrust on the operating engine(s) should be set to the go-around power or thrust setting, and compliance with all the VMCL requirements of [CS 25.149(f) and (h)](#_DxCrossRefBm1709820669) must be demonstrated. (c) At the option of the applicant, a one-engine-inoperative landing minimum control speed, VMCL (1 out), may be determined in the conditions appropriate to an approach and landing with one engine having failed before the start of the approach. In this case, only those configurations recommended for use during an approach and landing with one engine inoperative need be considered. The propeller of the inoperative engine, if applicable, may be feathered throughout. The resulting value of VMCL (1 out) may be used in determining the recommended procedures and speeds for a one-engine-inoperative approach and landing. [Amdt 25/26]