THRUSH AIRCRAFT, INC – MODEL S2R-R1340 THRUSH 600
AIRCRAFT MAINTENANCE MANUAL
Effective: 01/01/08
8-13
INSTRUMENT TROUBLE SHOOTING CHART, Table 8-1, Page 2
ALTIMETER (Continued)
PROBLEM PROBABLE
CAUSE
REMEDY
Static pressure irregular.
Check lines for obstructions or leaks.
Check static source. Blow out lines,
tighten connections. Clean static
source.
Hands oscillate.
Leak in airspeed or
vertical speed indicator
installations.
Check other instruments and system
plumbing for leaks and obstructions.
Blow out lines, tighten connections.
MAGNETIC COMPASS
Compass not properly
compensated
Swing compass and compensate.
Excessive card
error
External magnetic
interference
Locate and eliminate interference.
Insufficient liquid
Replace compass.
Excessive card
oscillation
Excessive vibration of
compass
Remove cause of vibration.
Card element
not level,
sluggish
Compass excessively
compensated
Back compensating screws off to
remove all compensation, then re-
compensate compass.
Liquid leakage
from case
Leaking float chamber
due to broken cover glass
or case, or defective
sealing gaskets, weak or
detached card magnets,
pivot friction, or broken
jewel
Replace compass.
ENGINE OIL PRESSURE GAUGE
Worn or bent movement Replace
instrument.
Dirty or corroded
movement
Replace instrument.
Gauge has
erratic operation
Pointer bent and rubbing
on dial, dial screw or
glass
Replace instrument.