Check Six – 2003: More about the -220E Engine Conversion
Right in the middle of our -220E engine conversion in 2003, a Time Compliance Technical Order (TCTO) came out in involving the Digital Electronic Engine Control (DEEC).
Yes, it controls the engine.
Normally this would be a Depot Level modification, but time they allowed the units to do it to save time. Lester Leung from Avionics was selected to perform the modifications.
The process – DEEC needed to be taken apart and three logic boards removed. The Erasable Programmable Read Only Memory (EPROM) was erased, and a new program burned into memory. The component boards were then reassembled, and leak checked.
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