Instruction Manual

Page 5-90 G1000 / GFC 700 System Maintenance Manual - 200/B200 Series King Air
Revision 9 190-00915-01
5.24 Standby Altimeter Troubleshooting
Symptom Recommended Action
Altimeter lighting is inoperative or
malfunctioning
• Perform the Standby Instrument Electrical Power Checks in Section 8.1.5.
• Remove standby altimeter per Section 6.26 and inspect the electrical
connector.
• Check that electrical power is being appropriately supplied to the
instrument.
• If the input electrical power is not adequate, troubleshoot the wiring
harness.
• If the input electrical power is appropriate, replace the standby
altimeter or contact the manufacturer for further troubleshooting.
Altimeter Vibrator is inoperative or
malfunctioning or fail flag is
displayed
Altitude displayed is incorrect
• Using a pitot-static ramp tester, check altitude displayed on standby
altimeter (Note that PFD2 has error correction above 19,000 ft. and will
not be the same as the non-corrected standby altimeter.)
9 Inspect the pitot/static ports and associated equipment for faults.
9 Replace the standby altimeter or contact the manufacturer for further
troubleshooting. See Section 6.26 for removal instructions.
5.25 Safe Flight Lift Computer Troubleshooting
Symptom Recommended Action
Stall Warning System is not
working properly or is invalid
• Troubleshoot in accordance with the King Air 200 Series Maintenance
Manual, listed in Table 1-2, section 27-31-00.
Stall Warning Mounting Plate or
Vane Heater Inoperative
• Troubleshoot in accordance with the King Air 200 Series Maintenance
Manual, listed in Table 1-2, section 27-31-00.
Only Pot 0 provides any
adjustment for Stall Warning
points.
• Troubleshoot in accordance with the King Air 200 Series Maintenance
Manual, listed in Table 1-2, section 27-31-00.
Stall Warning Self Test Will Not
Work Properly
• Troubleshoot in accordance with the King Air 200 Series Maintenance
Manual, listed in Table 1-2, section 27-31-00.
Flap Information to the computer
is not working properly.
• Troubleshoot in accordance with the King Air 200 Series Maintenance
Manual, listed in Table 1-2, section 27-31-00.
Display of ESP Alpha Floor
Symbology is inoperative or
erratic.
or
Advisory Alert – “ESP DEGRADE
– ESP AOA Mode is inoperative”
• Insure power is removed from the Stall Warning System.
• With the aircraft on the ground, install the SK100360 Breakout Box per
Figure 7-15, Breakout Box and perform the following resistance
measurements per the table below.
Test Points (TP) on SK100360 Breakout Box Expected Readings
24 – 25 140 ± 28 ohms
26 – 27 320 ± 64 ohms
28 – 27 320 ± 64 ohms
• If the resistances are not within the ranges specified check the aircraft
wiring between the computer and the transducer in accordance with the
appropriate Hawker Beechcraft wiring diagram.
• If the wiring between the computer and the transducer is good replace the
transducer.
• If the resistances are within the ranges specified, check that there is a
ground on TP 2.
• If all the resistances are within the ranges specified and there is a ground
on TP 2, apply power to the (Stall Warning System) Lift Computer and
check for the presence of 28 VDC from the aircraft circuit Breaker (C/B)
on TP 1 (Hi) and TP 2 (Lo).
• If the 28 VDC is missing, check the C/B.
• If 28 VDC power to the computer is present, check the transducer
excitation voltage on TP 24 (Hi) and TP 25 (Lo). The voltage should be 10
± 0.75 VAC at 720 ± 72 Hz.