mi68guel
The answer by airbus to your company's strange question is equally strange. First your company's question: This is the question from my company to Airbus (customer email):
"Is it legal and permissible under Airbus recommendations, to have active final approach mode prior to the FAF without proper FMS coding i.e. a defined FPA"
The answer should be it is not possible. Because FINAL APP can only be armed before FAF and only becomes active after FAF or VIP. Perhaps your company meant is it OK to arm the approach. Now the second part of the question, your company wants to know if it's OK to do managed approach without proper FMS coding and again the answer should have been "Hell NO" because before embarking on managed approach it is mandatory to check proper lateral and vertical profile in the MCDU with approach chart and FPA is one of them. FCTM explains all the points that need to be checked. When armed FINALAPP mode will not become active unless you are on track and at FAF altitude before FAF or VIP as it is called.
Last edited by vilas; 4th Jun 2016 at 18:47.