This is the place where the majority of the warbird (aircraft that have survived military service) discussions will take place. Specialized forums may be added in the new future
Mon Jun 04, 2018 4:07 pm
I'm going thru a few manuals to sell and the one with this unit(part no. 91-A-987-GR3), in it has no date on it. Most of the manuals have been 30's and 40's vintage. Also contained is info on the Silverstat 24V Voltage Regulator Type AVR-8-A and Generator Current Controller AVR-14-A. I've googled, but no joy. Anyone got a clue what these units vintage may be. Thanks for your time in looking!
Tue Jun 05, 2018 2:27 pm
The AVR-8-A was superseded by June 1944 according to T.O. 03-5-69,dated 20 June 1944, page 47. Likewise, the AVR-14-A has the same fate, page 49, same T.O. Both were Westinghouse manufactured items.
The 91-A-987-GR3 Generator was a 200 amp unit, with a speed requirement of 2500 to 4500 rpm and weighs in at just under 44 pounds.. Same T.O., page 37.
Wed Jun 06, 2018 6:33 am
Cool! Pre-6/'44. I forgot to mention it's a Westinghouse Aircraft Equipment, Instruction Hand Book. Thanks Craig!
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