Inspired from this question about the loss of a flap track fairing.
In the answer by Thunderstrike, a part of the configuration deviation list of an Airbus A320 is linked. In it, it says:
One fairing may be partly or completely missing.
- Fuel consumption is increased by 3.14%
That really is a lot!
I found a post on Airliners.net citing the CDL of a B757:
Straight out of the MEL/CDL manual for the 757, The item falls under CDL 27-51-1 which states there are 6 installed [Flap Track Fairings, Remark] on the aircraft and up to one per side may be missing. No fuel burn penalty but there are a few small weight penalties, no speed penalty. Our A-300's with the same CDL item does have a 1% fuel burn penalty and only one can be missing out of the 10 installed. I see this item come up 3 or 4 times a year, no biggie.
- What causes this very high increase in fuel consumption on Airbus planes?
- What are the differences between the fairings of a Boeing and an Airbus (because Boeing has no increased fuel consumption, Airbus has)?