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© Committee on Public Information 



AVIATION STUDENTS GETTING ACQUAINTED WITH THEIR AIRPLANE ENGINES 



It has been said that a first-class mechanic is worth more to a training school than a first- 

 class pilot, and it has been found that they are harder to recruit ; vet every pilot must know 

 his engine. He must know by its rhythm when it is running properly ; he must have keenness 

 of ear for any unusual sound, for such sounds are danger signals, which, observed in time, 

 may save a machine and its precious freight. Hence, at the training schools every pilot is 

 given the most thorough training in the care of his engine. 



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