I used to ride around California in 146s, as Air Cal and PSA both had those for n-state rides. They were great planes for the use, very quiet (joke was, they had four blow dryers for engines). They do have a *very* loud and distinctive howling noise that they make when flaps are deployed.
It only took AA and USAir a couple of years after they acquired the local carriers (AirCal and PSA, respectively) to almost completely lose the market share they each had in California, through indifferent customer service, and the 146s, which were excellent in service for AirCal and PSA , became unneeded. Southwest Airlines should have sent them "Thank You" cards.