[Collins] Help ID Collins Boards

[Glenn Little WB4UIV]

I have two boards from Collins equipment.
I suspect that they are aviation and from same equipment.
PWR AMP 628 5022 002
COM RCVR 628 5026 003
Google was no help.

Any info appreciated.
Thanks
Glenn
WB4UIV
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Glenn Little                ARRL Technical Specialist   QCWA  LM 28417
Amateur Callsign:  WB4UIV            wb4uiv at arrl.net    AMSAT LM 2178
QTH:  Goose Creek, SC USA (EM92xx)  USSVI LM   NRA LM   SBE ARRL TAPR
"It is not the class of license that the Amateur holds but the class
of the Amateur that holds the license"