longobard
VAPP COMPUTATION (from FCOM DSC Auto flight)
VAPP, automatically displayed on the MCDU PERF APPR page, is computed as follows:
‐ VAPP = VLS+1/3 of the TWR HEADWIND COMPONENT, or
‐ VAPP = VLS +5 kt, whichever is the highest.
From PROSUP Operating speed definition.
VAPP : Final approach speed. Displayed on MCDU APPR page.
Calculated by the FMGCs.
Represents : VAPP = VLS + wind correction
The wind correction is limited to a minimum of 5 kt and a maximum of 15 kt.
The flight crew may modify VAPP through the MCDU.
‐ During autoland or when A/THR is on or in case of ice accretion or gusty
crosswind greater than 20 kt, VAPP must not be lower than VLS +5 kt
FROM QRH
Approach correction : 5kts (only in case of ATHR ON) +1/3 Headwind(MAX=15kts)
So your statement is true if you are using FMGC calculated speed i.e. no addition is required upto 15kts HW but you can use Vls for approach if auto thrust is OFF and in nil wind. This is splitting hair but technically correct.
Last edited by vilas; 7th December 2013 at 08:14.