allowable compass error...

Ah, Jim, finally.... thank you, thank you...

Casey


"Jim Macklin" wrote in message
news:FqFlg.49206$ZW3.9522@dukeread04...
' 23.1327 Magnetic direction indicator.
(a) Except as provided in paragraph (b) of this section-

(1) Each magnetic direction indicator must be installed so
that its accuracy is not excessively affected by the
airplane's vibration or magnetic fields; and

(2) The compensated installation may not have a deviation in
level flight, greater than ten degrees on any heading.

(b) A magnetic nonstabilized direction indicator may deviate
more than ten degrees due to the operation of electrically
powered systems such as electrically heated windshields if
either a magnetic stabilized direction indicator, which does
not have a deviation in level flight greater than ten
degrees on any heading, or a gyroscopic direction indicator,
is installed. Deviations of a magnetic nonstabilized
direction indicator of more than 10 degrees must be
placarded in accordance with '23.1547(e).

[Amdt. 23-20, 42 FR 36969, July 18, 1977]