Avidyne Entegra Efis Installation - Piper Malibu Meridian PA-46-500TP Airplane Maintenance Manual

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Avidyne Entegra EFIS Installation

(1) Magnetometers
In S/N's 4697198; 4697216 and up, when equipped with the Avidyne FlightMax Entegra EFIS,
two Magnetometer / OAT Sensor Assemblies (Mag/OAT) feed magnetic heading information to
the Primary Flight Displays (PFDs) and the Multifunction Display (MFD). The Mag/OAT's are
mounted under the dorsal fairing atop the aft fuselage at F.S. 282.372. See Figure 5.
NOTE: The OAT sensors in the Mag/OAT assemblies are not used. See Outside Air
Temperature in 34-10-00.
(a) Removal
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(b) Installation
CAUTION: THE MAGNETOMETERS ARE SECURED TO THE MOUNTING BRACKET
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5D23
PIPER AIRCRAFT, INC.
PA-46-500TP, MALIBU MERIDIAN
MAINTENANCE MANUAL
Upon completing the two turns, the ADAHRS will automatically disengage from the
calibration mode, and enter the normal / operational mode.
Place the ADAHRS test cable calibration switch in the open (off) position and
perform a complete heading system swing. A settling time of 2 minutes must be used
at each heading to ensure heading stabilization. After 2 minutes of settling, record
the indicated heading against the known compass rose heading for all twelve
compass rose points in Chart 8. The heading system error should not exceed 3
degrees on any compass point.
Upon completion, remove test cable.
Remove the dorsal fairing to expose the magnetometers.
Disconnect the wiring harness(es) from the aft fuselage harness.
Unscrew the three screws securing the OAT probe mounting plate to the mounting
bracket.
Remove the OAT probe mounting plate and unscrew and remove the OAT probe
nut(s) from the bottom of the mounting plate and remove the OAT probe(s).
Unscrew and remove the three brass screws and washers securing the
magnetometer to its mounting bracket and remove the magnetometer(s).
WITH BRASS SCREWS. ENSURE ONLY BRASS SCREWS ARE USED
WHEN REINSTALLING.
Place the magnetometer(s) into position on its mounting bracket, with the arrow on
the magnetometer pointing forward, and secure with brass screws and washers (3
ea).
Place the OAT probe(s) into position on its mounting plate and secure with nut(s)
from bottom.
Place OAT probe mounting plate into position on mounting bracket and secure with
brass screws and washers (3 ea.)
Connect wiring harness(es) to the aft fuselage harness.
Reinstall the dorsal fairing.
NOTE: Ensure correct hardware is used when reinstalling vertical fin dorsal fairing
over flux detector.
34-20-00
PAGE 29
Apr 15/07