Originally Posted by
flyguy81
Say they were given a descent to 4k and told to slow to 180 while doing 230-250. They’d spin the airspeed knob to 180 and throw the speed brakes to help with the descent. New FO is told to slow toward up bug before asking for flaps.
If he forgot, the airplane is going to do what you tell it…descend to 4k and slow to 180. Auto throttles won’t do anything until 170-180 and by then you’re 20 kts or so below up bug.
In a light 700 the up bug is a lot lower than 200. We have a training recommendation to be within 10 knots of the limit before adding flaps. So don't add flaps 1 at 249 knots. I'm pretty sure I was at 190 when I added flaps 1 today in a light 700. I didn't note where the bug up speed was but it was likely in the 180s or even lower. I've seen ref/app speeds around 120. I think we were 126 today with the 5 knot addative. I usually am flaps one by 200 but I doubt they were a knot or two below clean manuver speed. I land flaps 15 a lot in the 700 frieghters we run because they are usually in the teens for flaps 30. It doesn't match with our OG 900s that don't even have winglets or the SFP placard and are 5 miles behind me. In full MAX 9 with 10K of gas you see 210 for clean manuver speed. If I flew a 777 I'm guessing I'd be freaking out if I saw the low speeds of a light 700 with 1/2 PAX and 6K of gas going into SAN but I'll never know...