Confuser Q&A Query
These 2 questions appear in the Confuser BUT there are 2 different answers. The answer to the first question (52) is shown as C, whilst the answer to the second question (66) is shown as B.
52 The abbreviation of an aircraft call-sign by a pilot is only permissible:
A after two-way communication with the ground station has been established.
B when it is established that confusion will not occur due to other aircraft having similar call-sign using the same frequency.
C after it has been abbreviated by the aeronautical ground station on the frequency in use.
D after it has been agreed by the pilot and controller in two-way radio communication.
66 The abbreviation of a ground station call-sign by a pilot is only permissible:
A after two-way communication with the ground station has been established.
B when satisfactory communication has been established and providing it will not be confusing, the name of the location or the call-sign suffix may be omitted.
C after it has been abbreviated by the aircraft commander on the frequency in use.
D after it has been agreed by the pilot and controller in two-way radio communication.
Q52's answer makes sense but not Q66.
I thought a pilot could only abbreviate a call-sign if it was first abbreviated by the ground station or does this not apply to abbreviating a ground station call-sign?
Help!
Greg