PPRuNe Forums - View Single Post - Concorde question
View Single Post
Old 9th Feb 2017, 09:03
  #1984 (permalink)  
EXWOK
 
Join Date: Sep 2007
Location: UK
Age: 58
Posts: 128
Likes: 0
Received 0 Likes on 0 Posts
A slightly tongue-in-cheek comment, Megan.

The BA Ops Manual requires an approach to be fully stable at 1000'R. It used to be slightly more relaxed, but even then a 'reduced noise' approach was an exception to the policy.

Basically we flew at a higher speed (190kts) until 800', then reduced speed to achieve final approach speed at 300'.

This had two benefits - thrust required at 190kts was a lot less than 160kts so flew a quieter and less-thirsty approach, and the portion between 800' and 300' was quieter still.

Vref+7 gave better control and performance margins at the end of this manoeuvre - I'll try to find a reference as to why +7 came about (I recall there was a specific reason for that number, but not the detail).
EXWOK is offline