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

Page: 948 / 1956

PAGE 2
Feb 28/07
5D6
34-20-00
PIPER AIRCRAFT, INC.
PA-46-350P, MALIBU MIRAGE
MAINTENANCE MANUAL
2. Standby Attitude Indicator
In S/N’s 4636375 & up , an electric standby attitude indicator is installed to the left of the pilot’s Primary
Flight Display (PFD).
Other than removing and replacing the unit itself (see 39-10-00), the only line replaceable part is the
emergency power battery which is located in the aft section of the radar pod.
A. Troubleshooting
See Chart 2.
B. Removal and Installation
See 39-10-00, Face Mounted Instruments - Removal and Installation.
Trouble Cause Remedy
Bar fails to respond. No power. Check power.
Faulty instrument. Check/replace instrument.
Bar does not settle. Incorrect instrument. Check part number.
Defective instrument. Replace.
Bar oscillates or shimmies Instrument loose in panel. Tighten mounting screws.
continuously.
Defective mechanism. Replace instrument.
Instrument does not indicate Instrument not level in Loosen screws and level
level flight. panel. instrument.
Aircraft out of trim. Trim aircraft.
Bar high after 180° Normal, if it does not Self correcting.
turn. exceed 1/16th inch.
CHART 2
TROUBLESHOOTING STANDBY ATTITUDE INDICATOR
C. Emergency Power Supply
A 24Vdc battery operated power supply (i.e. - B.F. Goodrich PS-834A) is installed in the aft radar
pod compartment to provide emergency power for the standby attitude indicator. The unit is
connected to the main electrical bus and its sealed lead-acid cells are automatically charged and
recharged by its built-in charging system.
(1) System Test.
The power supply may be tested locally using its integral test switch and light, or, remotely,
using the annunciator (i.e. - STBY ATT IND TEST) and instrument panel mounted remote
switch (i.e. - Standby Gyro Test Switch).
In either case, place the switch in TEST position for a minimum of five (5) seconds. The test
light must remain illuminated the entire time. The built-in-test function checks for operation of
the up-converter with an internal load applied. During the built-in-test, the input power is
automatically switched off and then the voltage of the battery pack is compared to a