Game Composites GB1 GameBird, Maintenance Manual

Page: 155 / 269

Maintenance Manual GB1 GameBird
Page date: April 24, 2020
31-5
Troubleshooting
Trouble – Pitot-Static Probable Cause Remedy
Crosscheck reveals erroneous
altimeter indication Leaks in pitot- and / or
static line Check lines for leaks.
Incorrect or sluggish response
of all devices connected to the
pitot-static system Leak or obstructions in
static line Repair or replace line, remove
obstruction
Low or sluggish airspeed
indication, altimeter normal Pitot tube deformed, leak
or obstruction in pitot
line Check pitot tube assembly for condition
Repair or replace damaged component
Trouble – Airspeed Indicator Probable Cause Remedy
Pointer reacts sluggish, low
indication Leaks in instrument case Repair or replace instrument
Obstruction in pitot line Check lines for leaks and / or moisture
Pointer oscillates Moisture in static line Blow out lines
Leak in pitot and / or
static line Repair or replace line
Leaking or ruptured
diaphragm Repair or replace instrument
Pointer vibrates Excessive vibration
caused by loose mounting
screws. Tighten mounting screws
Excessive pitot tube
vibration Tighten clamps and connections
Trouble – Altimeter Probable Cause Remedy
Erroneous indication Moisture in static line Check lines for leaks and / or moisture,
repair and / or blow out lines
Altimeter indicates high Leak in static system Inspect/ repair system
Excessive oscillation Defective instrument Repair or replace instrument
NOTE: After any repair / replacement to any component of the pitot-static system or instrument
connected to the pitot-static system, conduct pitot-static test per section
31-05 .