Just was on a flight (737-300) and something happened I have never seen before from a passenger window. I am just curious what was going on.
Push back from gate. Flaps set to takeoff setting. Then extended to about 15deg. Then retracted. Then extended to 25-30deg (remember Im eyeballing it from row 18...) about 3 or 4 times then retracted. Then set to takeoff. Depart normal. After landing, flaps were retracted and extended to around 10-15deg twice before arrival at gate.
Ive never seen this before as a passenger. I just curious if anybody had a guess as to what was going on. Company mechanic was in flight talking to crew as I deplaned.