When the reported RVR is not available, can a pilot substitute CMV for RVR to satisfy take-off minima?

No. CMV may be substituted for RVR when the reported RVR is not available, except to satisfy take-off minima or for the purpose of continuation of an approach in LVO.

For purposes other than flight planning, what conversion factor applies during the day when HI approach and runway lights are in operation?

During the day with HI approach and runway lights in operation, the conversion factor is 1.5 (RVR/CMV = reported VIS x 1.5).

What is the night-time conversion factor for converting reported visibility to RVR/CMV when any type of light installation other than HI approach and runway lights is in operation?

The night-time conversion factor is 1.5 when any type of light installation other than HI approach and runway lights is in operation.

Is it permissible to use CMV for the continuation of an approach in low visibility operations (LVO) when RVR is not reported?

No. CMV may not be used for the purpose of continuation of an approach in LVO.

If no lights are in operation, what conversion factor applies during the day for converting visibility to RVR/CMV?

When no lights are in operation, the day conversion factor is 1.0 (RVR/CMV = reported VIS x 1.0).

What is the night-time conversion factor when no lights are in operation?

The night-time conversion factor is not applicable when no lights are in operation.

Which table specifies the conversion factors for purposes other than flight planning?

Table 14 specifies the conversion factors for purposes other than flight planning.

For a night approach with HI approach and runway lights, what is the RVR/CMV value if the reported visibility is 800 metres?

The RVR/CMV would be 1600 metres (800 x 2.0) because the night conversion factor for HI approach and runway lights is 2.0.

During the day, with any type of light installation other than HI approach and runway lights, what is the RVR/CMV if the reported visibility is 1500 metres?

The RVR/CMV would be 1500 metres (1500 x 1.0) because the day conversion factor for any type of light installation other than HI approach and runway lights is 1.0.

Can CMV be used to satisfy take-off minima if the reported RVR is unavailable?

No, CMV cannot be used to satisfy take-off minima.

AMC8 SPO.OP.110 Aerodrome operating minima -- aeroplanes and helicopters

Q: Under what condition should CMV be used instead of RVR for an approach?

CMV should be used when the minimum RVR for an approach is more than the maximum value assessed by the aerodrome operator.

Q: What conversion factor should be used to determine CMV from visibility for flight planning purposes?

For flight planning purposes, a factor of 1.0 should be used.

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AMC8 SPO.OP.110 Aerodrome operating minima — aeroplanes and helicopters

ED Decision 2022/012/R

CONVERSION OF VISIBILITY TO CMV — AEROPLANES

The following conditions apply to the use of CMV instead of RVR:

(a) If the reported RVR is not available, a CMV may be substituted for the RVR, except:

(1) to satisfy take-off minima; or

(2) for the purpose of continuation of an approach in LVO.

(b) If the minimum RVR for an approach is more than the maximum value assessed by the aerodrome operator, then CMV should be used.

(1) for flight planning purposes, a factor of 1.0 should be used;

(2) for purposes other than flight planning, the conversion factors specified in Table 14 should be used.

Table 14

Conversion of reported VIS to RVR/CMV

Light elements in operation	RVR/CMV = reported VIS x
Light elements in operation	Day	Night
HI approach and runway lights	1.5	2.0
Any type of light installation other than above	1.0	1.5
No lights	1.0	not applicable

Details

Source-Title: AMC8 SPO.OP.110 Aerodrome operating minima -- aeroplanes and helicopters View latest amendments

Erulesid: ERULES-1963177438-14199 Compare versions

Domain: Air operations

Applicabilitydate: 30 October, 2022

Entryintoforcedate: 1 July, 2022

Regulatorysource: ED Decision 2022/012/R Navigate

Regulatorysubject: Part-SPO

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

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

Origin: EASA

Category: EAR