Piper Aircraft Corporation Malibu Mirage PA-46-350P, Airplane Maintenance Manual

Page: 937 / 1956

PAGE 9
Feb 28/07 5C19
34-10-00
PIPER AIRCRAFT, INC.
PA-46-350P, MALIBU MIRAGE
MAINTENANCE MANUAL
CHART 2
TROUBLESHOOTING VERTICAL SPEED INDICATOR
Trouble Cause Remedy
Pointer does not set on zero. Aging of diaphragm. Reset pointer to zero by
means of setting screw. Tap
instrument while resetting.
Pointer fails to respond. Obstruction in static line. Disconnect all instruments
connected to the static line.
Clear line.
Pitot head frozen over. Apply pitot heat.
Water in static line. Check individual
instruments for obstruction
in lines.
Obstruction in pitot head. Clean lines and head.
Pointer oscillates when not. Leak in static lines. Disconnect all instruments
operating in turbulent air. connected to the static line.
Check individual
instruments for leaks.
Reconnect instruments to
static line and test
installation for leaks.
Defective mechanism. Replace instrument.
Vertical Speed indicates when Water in static line. Disconnect static lines and
aircraft is banked. blow out lines from cockpit
out to static ports.
Pointer has to be set before Temperature compensator Replace instrument.
every flight. inoperative.
Pointer cannot be reset to zero. Diaphragm distorted. Replace instrument.
Instrument reads very low Case of instrument broken or Replace instrument.
during climb or descent. leaking.