Works fine. Sufficiently long to allow third row passenger in a Bonanza A36 to connect to a pilots socket.
April 20, 2018
Q: Will this extension cord work with the Bose, first generation, noise canceling headset? (the one prior to the A20).
Yes, the only determining factor for whether this will work or not with your headset is the plug type. This extension has dual GA twin plugs commonly found in most GA aircraft setups. It will not work as an extension for any of the other style plug connectors, ie single pin LEMO, U-174 Heli, etc.
Q: Will this extension cord support all the functionality in the new Bose A20 (stereo, music, phone, etc) assuming the plug types match my aircraft setup?
Yes, this will work as an extension for the Dual GA model Bose A20 headset.
Q: REFERENCE PART NUMBERS 11-15525,11-02290 and 11-10640: Please confirm that the plugs are for extension of PJ-055 (for headphone) and PJ-068 (for mic).
Yes, these are extensions for the plugs you referenced.