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

Page: 972 / 1956

PAGE 26
Feb 28/07
5E6
34-20-00
PIPER AIRCRAFT, INC.
PA-46-350P, MALIBU MIRAGE
MAINTENANCE MANUAL
6. Magnetic Heading Systems - S/N’s 4636160, and 4636248 thru 4636374
NOTE: The slaving magnetic compass installed in S/N’s 4636001 thru 4636247, less 4636160, were
installed as part of the Bendix/King Autopilot/Flight Director installations in those airplanes and
are serviced and adjusted per Bendix/King literature. See 22-10-00.
A. Flux Detector (See Figure 2.)
A flux detector installed in the leading edge of the vertical fin is used to provide heading data to the
HSI/EHSI and, if installed, the ADAHRS.
(1) Removal
CAUTION: PERFORM MAGNETIC HEADING COMPENSATION / CALIBRATION, BELOW,
WHENEVER THE FLUX DETECTOR IS CHANGED.
(a) Remove the dorsal fairing to expose the flux detector.
(b) Disconnect the wiring harness(es) from the top of the flux detector to be removed.
(c) Unscrew and remove the three brass screws and washers and remove the flux detector.
(2) Installation
CAUTION: THE FLUX DETECTOR IS SECURED TO THE MOUNTING BRACKET WITH
BRASS SCREWS. ENSURE ONLY BRASS SCREWS ARE USED WHEN
REINSTALLING.
(a) Place the flux detector into position on its mounting bracket and secure with brass screws
and washers (3 ea.)
(b) Connect wiring harness to the connector on top of the flux detector.
(c) Seal the connector backshell and base (see Figure 2, View A) with DOW Corning 4
Electrical Insulating Compound.
(d) Reinstall the dorsal fairing.
NOTE: Ensure correct hardware is used when reinstalling vertical fin dorsal fairing over
flux detector.
B. Magnetic Heading Compensation / Calibration
WARNING: FAILURE TO CONSULT APPLICABLE VENDOR PUBLICATION(S), WHEN
SERVICING OR INSPECTING VENDOR EQUIPMENT INSTALLED IN PIPER
AIRCRAFT, MAY RENDER THE AIRCRAFT UNAIRWORTHY. (SEE INTRODUCTION
- SUPPLEMENTARY PUBLICATIONS.)
(1) Standard Installation
(PIR-PPS60191, Rev. New.)
Accuracy of the entire heading system is dependent on the location of the flux detector and
proper calibration. Accuracies of plus or minus one degree are possible when care is taken
during installation and calibration. To obtain such results:
-- The flux detector must be positioned so that it points in the direction of aircraft flight; and,
-- The north-south and east-west correctors must be adjusted to compensate for extraneous
magnetic fields near the location of the flux detector.