"the fact that Boeing is now fully in the picture for this...

"the fact that Boeing is now fully in the picture for this approval tells me that the moment FAA approves this, the OEM will most likely become a client."

I agree with that observation, and perhaps that likelihood is the silver lining in this delay. If Boeing happens to become a customer straight after FAA approval then I'd say this delay is more than worth the wait.

In the meantime we know the audio/avionics business of AEM is becoming increasingly profitable, to the extent that SMN as a whole will soon be able to report profits on a regular quarterly basis. That is some feat IMO.