THRUSH AIRCRAFT INC - T660 TURBO THRUSH
AIRCRAFT MAINTENANCE MANUAL
C.
Attach a source of suction to static pressure source opening.
D.
Slowly apply suction until altimeter indicates a 1000-foot increase in altitude.
** CAUTION **
When applying or releasing suction, do not exceed the range of
the vertical speed indicator or airspeed indicator.
E. Cut off the suction source to maintain a closed system for one minute. Leakage shall not exceed 100-foot
of altitude loss as indicated on altimeter.
F. If leakage rate is within tolerance, slowly release suction source.
* NOTE *
If leakage rate exceeds the maximum allowable, first tighten all
connections then repeat the leakage test. If leakage rate still
exceeds the maximum allowable, use the following procedure.
G. Disconnect static pressure line from airspeed indicator to altimeter. Cap tee at altimeter so that the
altimeter is the only instrument still connected to static pressure system.
H. Repeat the leakage test to check whether the static pressure system or the removed instruments are the
cause of leakage. If instruments are at fault, they must be repaired by an appropriately rated repair station
or replaced. If the static pressure is at fault, use the following procedure to locate the system leakage.
I.
Attach a source of positive pressure to the static source opening.
Effective: 12/17/03
8 - 4
Summary of Contents for S2R-T660
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