AM2: The Final Guide.
Going for gold

Week #6

Week 6 Day 1
Today your R&D dollar should be around 225M.
Tomorrow we can unlock Bank-O Market Loan!
You should also have about 100M in cash (YMMV).

If you didnt get your first gold star yet, today it should be there! Congrats!

With the recent waves increase, your airline is now thruly profitable.
Even with more than 6 billion dollar to repay to bank (at ~150M/week!), your airline should generates 450M/week (after banks repayment, employees and tax!).
Most is still going straight to R&D though (280M/week!).

Play the mini games and wait for tomorrow.