I have noticed in some photo's that the classic 737 has 3 different types of cockpit layout.
I always thought that when the 737-300 was rolled out it came with an EFIS PFD & NAV Display but i have seen some completey analogue (737-200) type cockpits on the -300.
Does anybody know when:
1) The EFIS was rolled out as standard?
2) The digital engine indication system was rolled out as standard?
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