 By July, certification was put back by six months and first deliveries were scheduled 11 months later than originally planned.$40 million were spent on R&D and $25 million for certification, for a total spending of $150 million by first delivery including tooling.By October, the two prototypes had logged 400 hours in 372 flights and FAR-25 certification was expected in April 1982 with first deliveries in October.