The system of ground signals was amended with effect from 14 July and in September an "aerial lighthouse" was reported to be under construction.
In September, the "aerial lighthouse" was reported to be under construction. The system of ground signals was amended with effect from 14 July.
The system of ground signals was amended with effect from 14 July. In September, the "aerial lighthouse" was reported to be under construction.
The system of ground signals was amended with effect from 14 July. In September, the "aerial lighthouse" was reported to be under construction.