"To the Chief of the 1st Section of the 1st Department of the BTU, Military Engineer 2nd Class comrade Chikov
In response to your request by telephone, I reply with the program of 150 hour trials of the the V-2 S4 engine.
The engine has completed its trials, the trial was passed. Currently the engine is being prepared to be tested again according to the same program.
Attachment: program on 3 pages.
GABTU Regional Engineer, Military Engineer 2nd Class, Fedorov"
January 29th, 1941
Via Yuri Pasholok.