In June and July 1970 I was in Penerak. The airfield was constructed fo a combined military exercise called 'Bersatu Padu. I have the complete story in an article on my website with lots of pictures: http://ukmamsoba.org/bersatu%20padu.htm
I trust this will clear it up?
Best regards
Tony Gale
Secretary & Webmaster
UKMAMS Old Bods Association
Gatineau/Ottawa, Canada
Tel: 819-684-9140
Mob: 613-255-8465
http://ukmamsoba.org