blade angle movement to the reverse and feather
any external leakage corrective work has been
blade angles.
completed.
If internal flow and leakage requirements are
not in compliance with the appropriate technical
INTERNAL FLOW AND
publication, you must disassemble the propeller
LEAKAGE TEST
and inspect all visible packings for damage and/or
proper location. All internal flow and leakage tests
The internal flow and leakage tests are
must be completed before you can issue the pro-
designed to ensure the proper internal operation of
peller to an operating activity. The time for
the propeller system. The test equipment will
discovering external/internal leakage is NOT
supply the various hydraulic pressures to the in-
when the propeller has been installed and is ready
board and outboard side of the dome piston, surge
for final rigging.
valve, and pitchlock mechanism ensuring smooth
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