What is the purpose of Table 20 in GM8 CAT.OP.MPA.110?

Table 20 may be used to determine the correction that should be applied to the barometric DH/MDH for temperature, as stated in GM8 CAT.OP.MPA.110.

What temperature correction should be applied to a barometric DH when the aerodrome temperature is -20°C and the height above the altimeter setting source is 1,000 ft?

According to Table 20, for an aerodrome temperature of -20°C and a height of 1,000 ft above the altimeter setting source, the correction to be applied is 140 ft.

For a height of 3,000 ft above the altimeter setting source and an aerodrome temperature of -40°C, what correction is listed in Table 20?

For -40°C and 3,000 ft, Table 20 lists a correction of 720 ft.

What is the correction for an aerodrome temperature of 0°C and a height of 5,000 ft above the altimeter setting source?

For 0°C and 5,000 ft, Table 20 lists a correction of 280 ft.

If the aerodrome temperature is -50°C and the height above the altimeter setting source is 2,000 ft, what correction should be applied?

For -50°C and 2,000 ft, Table 20 lists a correction of 590 ft.

What correction is required for a height of 400 ft above the altimeter setting source when the aerodrome temperature is -30°C?

For -30°C and 400 ft, Table 20 lists a correction of 80 ft.

For an aerodrome temperature of -10°C and a height of 1,500 ft above the altimeter setting source, what is the correction in Table 20?

For -10°C and 1,500 ft, Table 20 lists a correction of 150 ft.

GM8 CAT.OP.MPA.110 Aerodrome operating minima

Q: Are the temperature corrections in Table 20 conservative when applied at high-altitude aerodromes?

Yes, the calculations in Table 20 are for a sea-level aerodrome; they are therefore conservative when applied at higher-level aerodromes.

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GM8 CAT.OP.MPA.110 Aerodrome operating minima

ED Decision 2023/007/R

LOW TEMPERATURE CORRECTION

(a) An operator may determine the aerodrome temperature below which a correction should be applied to the DA/H.

(b) Table 20 may be used to determine the correction that should be applied.

(c) The calculations in the table are for a sea-level aerodrome; they are therefore conservative when applied at higher-level aerodromes.

(d) Guidance on accurate corrections for specific conditions (if required) is available in PANS-OPS, Volume III (ICAO Doc 8168) Section 2 Chapter 4 First Edition, 2018.

Table 20

Temperature corrections to be applied to barometric DH/MDH

Aerodrome temperature (°C)	Height above the elevation of the altimeter setting source (ft)
Aerodrome temperature (°C)	200	300	400	500	600	700	800	900	1 000	1 500	2 000	3 000	4 000	5 000
0	20	20	30	30	40	40	50	50	60	90	120	170	230	280
-10	20	30	40	50	60	70	80	90	100	150	200	290	390	490
-20	30	50	60	70	90	100	120	130	140	210	280	420	570	710
-30	40	60	80	100	120	140	150	170	190	280	380	570	760	950
-40	50	80	100	120	150	170	190	220	240	360	480	720	970	1 210
-50	60	90	120	150	180	210	240	270	300	450	590	890	1 190	1 500

Details

Source-Title: GM8 CAT.OP.MPA.110 Aerodrome operating minima View latest amendments

Erulesid: ERULES-1963177438-19649 Compare versions

Domain: Air operations

Amendedby: Issue 2, Amendment 23

Applicabilitydate: 29 June, 2023

Entryintoforcedate: 29 June, 2023

Regulatorysource: ED Decision 2023/007/R Navigate

Regulatorysubject: Part-CAT

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

Parentir: CAT.OP.MPA.110 Aerodrome operating minima

Origin: EASA

Category: EAR