A320 DESCENT PREPARATION

ECAM STSCHECKED
NAV CHARTSPREPARE STAR, INIT APP, APP
LATEST METAR/ATISOBTAIN

RWY IN USEDETERMINE
Remember: we tried to predict RWY IN USE earlier, when creating the FPL.
Compare your prediction using newest METAR (or ATIS if ATC is AVAIL).

LANDING PERFCOMPUTE
Just like with the TKOF PERF, use your aircraft's own calculation system (EFB, separate panel...). If not available, you can use SimBrief's PERF TOOL.

How to calculate LDW?

It is better to calculate instead of usind the EST LDW from the flight plan. You can use this simple method:
1. FOB - DEST EFOB
2. GW - the result above
3. add 200kg just in case

FLAPS 3 or FULL?

Flaps 3 is preffered since it saves fuel, but...

It is better to use FLAPS FULL in the following conditions:
- Turbulent, windshear or tailwind conditions are expected.
- Short runways.
- GS greater than 3º.
- Brakes will not have enough time to cool during turnaround (flaps 3 = landing a bit faster = more braking action)
- Remember, when using flaps 3, nose pitch will be slightly higher, so that would not be helpful on low visibility. Also for this reason, on flaps 3, less back pressure is required on the sidestick for flare.


MCDU F-PLNCHECK ARR RWY, STAR, CSTR...
MCDU RAD-NAVTUNE NECESSARY FREQS (APCH)
MCDU PROGCHECK GPS PRIM. ACCUR HIGH
MCDU PERF DESCHECK MANAGED SPEED
MCDU PERF APPRSET ALL DATA

Detailed explanation:

- QNH, TEMP, WIND from METAR
- TRANS LEVEL: If charts say "by ATC", but ATC not avail, use following method as a generic example:
500ft above TA if QNH between 1032 and 1050
1000ft above TA if QNH between 1014 and 1031
1500ft above TA if QNH between 996 and 1013
2000ft above TA if QNH between 978 and 995
2500ft above TA if QNH between 960 and 977
3000ft above TA if QNH between 942 and 959

- BARO vs RADIO: Radio altimeter is only used on CATII/III. For CATI/NPA Baro is used. Check charts.
A320/A319 are CAT C, and A321 is CAT D if MLW between 75.5T and 77.8T, otherwise C as well.

- Finally select LDG CONF.


MCDU PERF GASET ENG OUT ACC

ENG OUT ACC will be the MSA or the MISSED APCH altitude, whichever is lower.

MCDU FUEL PREDCHECK EXTRA/TIME
MCDU SEC F-PLNCOPY ACTIVE

A useful usage for the secondary flight plan would be to prepare any approach change/parallel runways...

MCDU SEC PERF APPRSET AS RQRD



AUTO BRAKESET AS RQRD
GPWS FLAPS 3AS RQRD