What is the correct pronunciation of 辫发？ Google Translate and 查查在线词典 both say 辫发 ought to be biànfǎ, but Baidu says biànfā. What is correct?
According to Xinhua Zidian, the only admitted standard pronounciation currently for 发 (in Mainland) is


fā, various meanings e.g. "to send out, to dispatch", "to start", "to grow, to expand", "to open, to reveal, to invent", "to show", "to produce, to happen"; and
fà, meaning "hair".


As 发 in 辫发 refers to hair, it should be pronounced biànfà in Mainland China. This is also how I pronounce the word (native speaker).

In Taiwan, as indicated by the other answer, fǎ is correct.