A. Replenishing
The fluid systems on the aircraft which must be examined and adjusted regularly are the:
B. Scheduled Servicing
Scheduled servicing of the aircraft are those procedures necessary to lubricate, remove fluid samples and clean the aircraft.
C. Unscheduled Servicing
Unscheduled servicing of the aircraft are those procedures necessary to remove snow, ice and frost collections from the aircraft
D. Danger Areas
For the danger areas, of aircraft with engines running, Ref. Fig. 2