THE NEW PIPER AIRCRAFT, INC.
PA-32-301FT / 301XTC
MAINTENANCE MANUAL
PAGE 5
Feb 19/04
3H19
34-10-00
3. Altimeter
A. Description
The altimeter indicates pressure altitude in feet above mean sea level. The indicator has three
pointers and a dial scale; long pointer is read in hundreds of feet, middle pointer in thousands of
feet and short pointer in ten thousands of feet. A barometric pressure window located on right side
of indicator dial is set by knob located on lower left corner of instrument. Altimeter consists of a
sealed diaphragm that is connected to pointers through a mechanical linkage. Instrument case is
vented to static air system and as static air pressure decreases, diaphragm expands, causing
pointers to move through mechanical linkage.
NOTE: When any connections in the static system are opened for checking, system must be
rechecked per FAR 23.1325.
B. Troubleshooting
See Chart 2.
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