Tecnam P2002 JF - Page 610

Page 203 2
nd
Edition – Rev 0
34-20
ATTITUDE AND HEATING – MAINTENANCE PRACTICE
Procedure
Step
no.
Task description
Additional info &
References
1.
Check to see that canopy is closed, flaps are in
retracted position, and throttles set at cruise
position, engines operating, and aircraft in a level
attitude. All electrical switches, generators,
radios, etc., should be in the position they will
normally be for navigation flight.
Before attempting to
compensate compass, every
effort should be made to
place the aircraft in simulated
flight conditions.
2.
Set adjustment screws of compensator on zero.
Zero position of adjustment screw is obtained by
lining up the dot on the screw with the dot on the
compensator frame.
Use a brass or other non-
ferrous material screwdriver
when making compensator
adjustments.
3.
Head aircraft on magnetic North heading. Adjust
N-S adjustment screw until compass reads exactly
North.
4.
Head aircraft on magnetic East heading. Adjust E-
W adjustment screw until compass reads exactly
East.
5.
Head aircraft on magnetic South heading. Note
the resulting South error. Adjust the N-S adjusting
screw until one-half of this error is removed.
6.
Head aircraft on magnetic West heading. Note the
resulting West error. Adjust the E-W adjusting
screw until one-half of this error is removed.
7.
Head aircraft in successive magnetic 30-degree
headings and record all errors on the deviation
card furnished with the compass.
For satisfactory results, all
extraneous magnetism
causing over 30-35 degree
compass errors should be
removed from the aircraft