For composite aircraft, the GTP 59 probe must be installed in Lightning Zone 3 and installed such that it is
electrically isolated. For aircraft model-specific information regarding acceptable lightning zones for the
GTP 59, refer to Table D-1. Refer to Appendix G for lightning zone details. Regardless of its location, the
probe must protrude into the air flow when the aircraft is in flight and be kept away from direct sources of
heat (e.g., engine exhaust, direct sunlight, cabin exhaust, etc.) to provide an accurate air temperature
measurement.
Figure 4-38 GTP 59 Installation in Composite Aircraft (Non-Conductive Access Panel)
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GI 275 Part 23 AML STC Installation Manual
Rev. 11
Page 4-55