Diamond DA20-C1 - Flight Environment Data - Troubleshooting

Page 101
Rev 16
34-10-00
Troubleshooting
DA20-C1 AMM
DA201-C1
30 Oct 09
FLIGHT ENVIRONMENT DATA - TROUBLESHOOTING
1. General
This table explains how to troubleshoot the pitot-static and OAT systems. If you find the trouble in
column 1, do the repair given in column 3.
A. Pitot-Static and OAT Systems
TROUBLE POSSIBLE CAUSE REPAIR
Altimeter lags or reads
incorrectly.
Faulty instrument. Replace the instrument.
VSI reads incorrectly. Blocked or kinked static pipe. Clear the pipe.
Water in the system. Drain the water.
Airspeed indicator reads low. Faulty instrument. Replace the instrument.
Blocked or kinked static pipe. Clear the pipe.
Water in the system. Drain the water.
Pitot heat does not operate. PITOT HEAT circuit-breaker
is open.
PITOT HEAT circuit-breaker
defective.
Close the circuit-breaker. If the
circuit breaker opens again, do a
test for a short-circuit in the pitot
heat wiring.
Replace the circuit breaker.
High thermal limit switch is
open-circuit
Reset high thermal switch
(located within the inspection
panel under wing at the pitot
static probe.
Low thermal limit switch is
open-circuit (automatic reset
defective)
Replace low thermal switch.
Pitot heat wiring is open
circuit.
Do a continuity test of the wiring.
Repair/replace defective wiring.
Pitot probe defective. Replace the pitot probe.
OAT indicator gives incorrect
indication.
Faulty indicator. Replace the indicator and sensor.
OAT indicator gives no
indication.
OAT circuit-breaker is open or
defective.
Close the circuit-breaker or
replace the circuit breaker.
Defective power supply cable. Repair the cable.