What is the default calculation angle used in the formula to determine required RVR from DH and lighting facilities?

The default calculation angle (α) is 3.00°.

How does the calculation angle change for each line in Table 8?

The calculation angle increases in steps of 0.10° for each line in Table 8 up to 3.77° and then remains constant.

In the RVR formula, what does the term 'length of approach lights' represent?

The term 'length of approach lights' is subtracted in the formula: RVR (m) = [(DH/MDH (ft) × 0.3048)/tanα] - length of approach lights (m).

GM7 SPO.OP.110 Aerodrome operating minima -- aeroplanes and helicopters

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GM7 SPO.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

The values in Table 8 are derived from the formula below:

RVR (m) = [(DH/MDH (ft) × 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 8 up to 3.77° and then remaining constant. An upper RVR limit of 2 400 m has been applied to the table.

Details

Source-Title: GM7 SPO.OP.110 Aerodrome operating minima -- aeroplanes and helicopters View latest amendments

Erulesid: ERULES-1963177438-19753 Compare versions

Domain: Air operations

Applicabilitydate: 30 October, 2022

Entryintoforcedate: 1 July, 2022

Regulatorysource: ED Decision 2022/012/R Navigate

Regulatorysubject: Part-SPO

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

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

Origin: EASA

Category: EAR