Some of our customers have in addition to maintenance agreements complete operation agreements. In these cases DANA carries out the full operation  and provides flight crew  and Cabin attendants. DANA's  engine workshop is equipped and approved by the manufacturers and the Nigerian Civil  Aviation  Authority (NCAA) to carry out  hot  section inspections and repairs of Garrett TPE 331 and Pratt & Whitney Canada PT6 engines. DANA's aircraft spare part support is provided by a climate controlled store building which is computer linked for efficient stores control.