Originally Posted by
atakacs
Certainly not familiar with that flap 30 procedure.
I understand the noise abatement aspect but what take-off performance effect does it have versus more "traditional" settings?
Neither am I. Flaps 15 was normal for takeoff. Flaps 5 at high-altitude, long runway airports such as KDEN and ABQ. Flaps 25 for short runway, low-altitude airports such as KLGA.
In fact, after the KSLC crash (1965?) my company blocked out Flaps 40. So, Flaps 30 became our landing flap setting. Some carriers didn't block them, but made Flaps 30 the normal landing flap.