INDIA FOUR TWO
I can't recall how I came to 'know' that the Jakarta Devon was based at Kemayoran. It just seems embedded in my fading memory. But there are a few clues
The Devon was used for domestic flights and domestic flights from Jakarta used Kemayoran The exceptions were those connecting with international tourists flights which used Halim (eg flights to Yogyakarta and Bali). So Kemayoran would seem to be the appropriate base.
In the early 1980's The Jakarta US Embassy (DIA) used a Beechcraft C 12 in a similar role to the Devon (ie for attaches to junket about the islands.) The C 12 was based at Kemayoran.
When the boss of 214 Sqn, Wg Cdr 'Tommy' Tucker, left in the mid 1970's to become AA in Jakarta, he had to do a Devon conversion before taking up the post (at Northern Comm Squadron?) So yes, the Jakarta Devon was self fly by the AA
Regards RC