OHLHD From Finland, joined Dec 2004, 3962 posts, RR: 26 Posted (5 years 11 months 3 weeks 4 days 9 hours ago) and read 2934 times:
Hi everyone. I recently travelled on a SK B737-600 and after some 20 B737 flights I saw this for the first time and was thinking if this shaking is actually normal on a B737 in general or on other aircrafts. I was not scared or so, just curious because I have not seen something like that before.
You are not allowed to use spoilers once flaps are higher than 10 degrees on the 737... Only on ground after touchdown...
And for the shaking: not unusual when flaps are extended. The airflow is a lot different than during cruise flight with a clean profile... The air is a lot more turbulent with flaps extended and that makes this thing shaking a bit.
If you have the chance, check out the stabilizer after touchdown of a landing aircraft with a lot of recerse thrust! This thing is shaking like hell then