What is the default calculation angle used in the RVR formula in GM3 NCO.OP.110?

The default calculation angle is 3.00°.

In the RVR formula of GM3 NCO.OP.110, what is subtracted from the term (DH/MDH (ft) x 0.3048)/tanα?

The length of approach lights (m) is subtracted.

What is the maximum value of the calculation angle α used in Table 2 of GM3 NCO.OP.110?

The calculation angle α increases up to 3.77° and then remains constant.

GM3 NCO.OP.110 Aerodrome operating minima -- aeroplanes and helicopters

Q: How does the calculation angle α change for each line in Table 2 of GM3 NCO.OP.110?

The calculation angle α is a default value of 3.00°, increasing in steps of 0.10° for each line in Table 2 up to 3.77° and then remaining constant.

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GM3 NCO.OP.110 Aerodrome operating minima — aeroplanes and helicopters

ED Decision 2022/012/R

MEANS TO DETERMINE THE REQUIRED RVR BASED ON DH AND LIGHTING FACILITIES

(a) The values in Table 2 are derived from the formula below:

RVR (m) = [(DH/MDH (ft) x 0.3048)/tanα] — length of approach lights (m),

where α is the calculation angle, being a default value of 3.00° increasing in steps of 0.10° for each line in Table 2 up to 3.77° and then remaining constant. An upper RVR limit of 2 400 m has been applied to the table.

(b) The lighting system classes in Table 2 have the meaning specified in Table 6.

Details

Source-Title: GM3 NCO.OP.110 Aerodrome operating minima -- aeroplanes and helicopters View latest amendments

Erulesid: ERULES-1963177438-13547 Compare versions

Domain: Air operations

Applicabilitydate: 30 October, 2022

Entryintoforcedate: 1 July, 2022

Regulatorysource: ED Decision 2022/012/R Navigate

Regulatorysubject: Part-NCO

Typeofcontent: GM to IR (Guidance material to implementing rule)

Parentir: NCO.OP.110 Aerodrome operating minima -- aeroplanes and helicopters

Origin: EASA

Category: EAR