Robinson R44 fuel tanks

Robinson R44 Raven 11 ZK-HQV2 (c/n 11684) is seen here at Heli Maintenance at Christchurch on Wednesday having its fuel tanks replaced as per Robinson's Service Bulletin

Service Bulletin on Robinson R44 Fuel Tanks

http://www.robinsonheli.com/srvclib/r44sb78.pdf

You might like to check out the link below for the Australian Airworthiness bulletin

http://www.casa.gov.au/wcmswr/_assets/main/airworth/awb/28/012.pdf