CS 25.119 Landing climb: all engines operating

IRImplementing rule

CS 25.119Landing climb: all engines operating

(See AMC 25.119) In the landing configuration, the steady gradient of climb may not be less than 3·2%, with the engines at the power or thrust that is available 8 seconds after initiation of movement of the power or thrust controls from the minimum flight idle to the go-around power or thrust setting; and

(a)In non-icing conditions, with a climb speed of VREF determined in accordance with CS 25.125(b)(2)(i); and

(b)In icing conditions with the most critical of the “Landing Ice” accretion(s) defined in Appendices C and O, as applicable, in accordance with CS 25.21(g), and with a climb speed of VREF determined in accordance with CS 25.125(b)(2)(i).

[Amdt 25/3]

[Amdt 25/16]

[Amdt 25/18]

IR · CS 25.119 — CS-25 · ED Decision 2016/010/R · CS-25 Easy Access Rules · EAR revision 26 Jan 2023

AMCAcceptable means of compliance

AMC 25.119Landing climb: all-engines-operating

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In establishing the thrust specified in CS 25.119, either – a. Engine acceleration tests should be conducted using the most critical combination of the following parameters: i. Altitude; ii. Airspeed; iii. Engine bleed; iv. Engine power off-take; likely to be encountered during an approach to a landing airfield within the altitude range for which landing certification is sought; or b. The thrust specified in CS 25.119 should be established as a function of these parameters. For aeroplanes equipped with a reduced go-around (RGA) thrust or power function, the climb requirements specified in CS 25.119 are applicable with the RGA function active. During the determination of the maximum thrust or power specified in AMC 25.119 a. and b. the thrust or power controls should be moved to the RGA thrust or power setting. This is consistent with an AFM all-engines-operating go-around procedure which recommends the use of an RGA function (see AMC 25.143(b)(4)). In exceptional circumstances such as in the presence of wind shear or of unplanned obstacles, the flight crew may elect to use go-around thrust or power that exceeds the RGA setting. However, the applicant is not required to provide AFM climb gradient performance for this situation. If an AFM go-around procedure is approved to use thrust or power above the RGA setting, then the climb requirements of CS 25.119 will apply at the higher thrust or power setting.

[Amdt 25/3]

[Amdt 25/26]

AMC · AMC 25.119 — CS-25 · ED Decision 2020/024/R · CS-25 Easy Access Rules · EAR revision 26 Jan 2023