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

Page: 933 / 1956

PAGE 5
Feb 28/07 5C15
34-10-00
PIPER AIRCRAFT, INC.
PA-46-350P, MALIBU MIRAGE
MAINTENANCE MANUAL
Trouble Cause Remedy
Heating element inoperative. Defective switch. Replace the switch.
Grounded or open circuit. Check for continuity
and repair.
Defective heating element Replace the
in pitot head. pitot-static mast.
Circuit breaker keeps tripping. Grounded wire. Check for continuity
and repair.
Instruments inoperative or Lines clogged. Disconnect lines at
erratic in operation. instruments and blow out
with low pressure air.
Line leaks. Check lines for loose
connections at all
connection points.
NOTE: If any connections in the static system are opened for maintenance, the entire system must be
rechecked per FAR 23.1325. With optional Meggitt EFIS installation, see Appendix 1 (grid 5K19).
CHART 1
TROUBLESHOOTING PITOT AND STATIC SYSTEMS
(1) Attach the test fixture to the pitot head. Align the holes in the fixture with the holes in the head.
(2) Attach the airspeed simulator hose to the pitot (pressure) port of the fixture.
(3) When equipped with the optional Meggitt EFIS, turn ON the PFD (i.e. - EADI).
(4) When equipped with the Avidyne Entegra, turn ON both PFD’s.
(5) Operate the simulator to obtain a reading of 75 knots on the airplane airspeed indicator(s).
(6) Check that the airspeed indicator needles follow in the same direction as the simulator
airspeed indicator needle.
(7) Raise airspeed to 198 knots and wait 15 seconds to allow the airplane airspeed indicators to
stabilize.
(8) Observe the simulator and airplane airspeed indicators for 15 seconds. If a leak is present, the
indicator needles will move toward zero.
(9) If a leak is present, check the fixture installation, hose connections, and pitot system lines and
fittings. Repair the leak when found, then repeat steps (1) - (8), above.
(10) In S/N’s 4636001 thru 4636374 with standard instrumentation, operate the simulator to indicate
140 knots on the airspeed indicators. Verify that the airspeed indicators show within three (3)
knots of the simulator indication.
(11) When equipped with the optional Meggitt EFIS:
(a) Operate the simulator to indicate 140 knots on the PFD. Verify that the airspeed indicators
show within three (3) knots of the simulator indication on the PFD.
(b) Operate the simulator until the overspeed aural alarm first sounds. Verify that the
simulator indicates an airspeed of 198 to 204 knots.