What is the acceptable gradient correction for a 20° bank turn during take-off obstacle clearance if the AFM provides a 15° bank gradient loss?

The gradient correction is 2 times the AFM 15° gradient loss, and the speed should be V2 + 5 kt.

For a 25° bank angle during take-off obstacle clearance, what speed and gradient correction are specified in AMC1 CAT.POL.A.405?

The speed is V2 + 10 kt, and the gradient correction is 3 times the AFM 15° gradient loss.

If the AFM provides a 15° bank gradient loss, how should the gradient correction be adjusted for a bank angle of 10°?

For bank angles of less than 15°, a proportionate amount of the AFM 15° gradient loss may be applied, unless the manufacturer or AFM has provided other data.

What speed is required for a 15° bank turn according to Table 1 of AMC1 CAT.POL.A.405?

The speed is V2, and the gradient correction is 1 times the AFM 15° gradient loss.

What is the effect of a 20° bank angle on the required speed and gradient correction compared to a 15° bank angle?

For a 20° bank angle, the speed is V2 + 5 kt and the gradient correction is 2 times the AFM 15° gradient loss, whereas for 15° the speed is V2 and the correction is 1 times the AFM 15° gradient loss.

If the AFM specifies a 15° bank gradient loss of 0.5%, what is the gradient correction for a 25° bank turn?

The gradient correction would be 3 times the AFM 15° gradient loss, i.e., 1.5%.

For a bank angle of 12°, how should the gradient correction be determined if the AFM provides a 15° gradient loss?

A proportionate amount of the AFM 15° gradient loss may be applied, unless the manufacturer or AFM has provided other data.

AMC1 CAT.POL.A.405 Take-off obstacle clearance

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AMC1 CAT.POL.A.405 Take-off obstacle clearance

ED Decision 2014/015/R

EFFECT OF BANK ANGLES

(a) The AFM generally provides a climb gradient decrement for a 15° bank turn. Unless otherwise specified in the AFM or other performance or operating manuals from the manufacturer, acceptable adjustments to assure adequate stall margins and gradient corrections are provided by the following:

Table 1

Effect of bank angles

Bank	Speed	Gradient correction
15°	V₂	1 x AFM 15° gradient loss
20°	V₂ + 5 kt	2 x AFM 15° gradient loss
25°	V₂ + 10 kt	3 x AFM 15° gradient loss

(b) For bank angles of less than 15°, a proportionate amount may be applied, unless the manufacturer or AFM has provided other data.

Details

Source-Title: AMC1 CAT.POL.A.405 Take-off obstacle clearance View latest amendments

Erulesid: ERULES-1963177438-12700 Compare versions

Domain: Air operations

Applicabilitydate: 1 July, 2014

Entryintoforcedate: 1 July, 2014

Regulatorysource: ED Decision 2014/015/R Navigate

Regulatorysubject: Part-CAT

Typeofcontent: AMC to IR (Acceptable means of compliance to implementing rule)

Parentir: CAT.POL.A.405 Take-off obstacle clearance

Origin: EASA

Category: EAR