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

Page: 982 / 1956

PAGE 36
Feb 28/07
5E16
34-20-00
PIPER AIRCRAFT, INC.
PA-46-350P, MALIBU MIRAGE
MAINTENANCE MANUAL
(e) Reinstall the dorsal fairing.
NOTE: Ensure correct hardware is used when reinstalling vertical fin dorsal fairing over
flux detector.
B. Calibration
(PIR-PP S 60227, Rev. B.)
Calibration can be accomplished using either of the following two methods.
NOTE: L S K L1 “Perform IRU Mx” and L S K L 3 “Perform ADU Cal” are to be performed by Avidyne
S ervice Technicians only. These functions are for bench test only.
(1) Bore sight reference compass (2 technicians)
NOTE: A hand-held bore sight reference compass is required for this procedure.
(a) Apply external power to the aircraft to allow the PFD’s to align while conserving the
battery for the remaining calibration procedure.
(b) Allow 3 minutes for the PFD’s to align, until the ADAHR S countdown timer expires and the
Gyro Warm-up box is removed from view.
NOTE: The PFD countdown timer might automatically restart its count before the
countdown expires. This is a normal operation and does not indicate a problem
with the PFD.
(c) Allow an additional 10 minutes in the aligned state to ensure complete stability.
(d) Place Battery Master S witch “ON”.
(e) Remove external power from the aircraft.
(f) Position the aircraft in an area located away from metal structures and magnetic
interference such as that caused by underground power lines, etc.
(g) Using the bore sight compass, align the aircraft to a heading of 3 60° +/- 1°.
(h) Enter the S ystem S etup mode on the pilot and copilot PFD’s.
(i) Press the “Perform Mag Cal” Line S elect Key (L2).
(j) Follow the directions on the “Magnetometer Calibration Page” and press the “Calibrate
Heading” button and wait until “Done” is displayed.
(k) Align the aircraft to each of the remaining 11 consecutive 3 0° headings using steps (g)
through (j) and press the “Calibrate Heading” L S K (R4) at each of these alignment points
after satisfactory alignment is achieved.
(l) At the final alignment point ( 33 0°), remain stationary until “Done” is displayed. This could
take up to one minute as data from the 12 calibration points is loaded onto the PFD’s.
(m) When complete, the following message appears:
MAG CAL COMPLETE - YOU MU S T CYCLE POWER ON THE PFD IN ORDER FOR
THE MAGNETOMETER CALIBRATION TO TAKE EFFECT.
(n) Cycle power by pulling the following circuit breakers.
1
Main bus: Pilot PFD and Copilot PFD
2 Non Essential Bus: PFD/MFD Power Converter
3 Avionics 1 Bus: Pilot PFD
4 Avionics 2 Bus: Copilot PFD
NOTE: Wait 20 seconds before applying power.
(o) Verify the calibration by aligning the aircraft with consecutive 90° headings, starting with
3 60°. Use the same alignment procedure as before and view the digital heading display
on the pilot and copilot PFD’s at each of these headings.