BOAC-
You had asked for an example of a telecon between crew and the factory. Here's an open source example:
FTW00LA153 The pilot further reported that... he was in contact with representatives from American Eurocopter during the flight to PTN.
Prior to the accident occurring, a local representative from American Eurocopter arrived at PTN to assist in trouble shooting a maintenance discrepancy on another aircraft. The local representative upon learning of the situation with N350JG, telephoned a test pilot at the American Eurocopter facility in Grand Prairie, Texas. The test pilot requested that the pilot conduct the emergency procedure for hydraulic failure of the tail rotor servo.
Jolly