A probe for a fan case liner of a gas turbine engine comprising: a housing; a probe sensor electronics; an electronic lead connected to the probe sensor electronics; and an inner cap disposed within the housing; wherein an axial bottom of the housing includes a radially inwardly facing lip and an axial top of the housing includes a radially outwardly facing lip; characterised in that the probe further comprises; a plurality of axially stacked caps disposed within the housing, the plurality of stacked caps including the inner cap and an outer cap; wherein the inner cap has a radially centered inner lead opening and the outer cap has a radially centered outer lead opening; wherein the probe sensor electronics is fixedly disposed between the inner cap and an axial bottom of the housing and axially disposed between an inner insulator and outer insulator; wherein the axial inner cap is axially spaced from the inwardly facing lip by a distance that allows for the positioning of the probe sensor electronics and a conductor strap between the axial inner insulator and the axial outer insulator; wherein the outer cap has an axial bottom surface positioned against the inner cap and the axial bottom of the outer cap is axially downwardly biased to transmit an assembly preload to internal components against the radially inwardly facing lip of the housing; and wherein the electronic lead is axially extending through the plurality of caps through the radially centered inner lead opening and the radially centered outer lead opening to an exterior of the probe; wherein the outer insulator provides insulation between conductors, which includes a sensor wire, a strap and the probe sensor electronics, and a ground-plane, which includes the combination of the inner cap, the outer cap and the housing; and wherein the coordinates applied herein are shifted by ninety degrees compared with a typical coordinate system for a gas turbine engine, where the axial direction typically extends along a centerline of the engine. a housing; a probe sensor electronics; an electronic lead connected to the probe sensor electronics; and an inner cap disposed within the housing; wherein an axial bottom of the housing includes a radially inwardly facing lip and an axial top of the housing includes a radially outwardly facing lip; characterised in that the probe further comprises; a plurality of axially stacked caps disposed within the housing, the plurality of stacked caps including the inner cap and an outer cap; wherein the inner cap has a radially centered inner lead opening and the outer cap has a radially centered outer lead opening; wherein the probe sensor electronics is fixedly disposed between the inner cap and an axial bottom of the housing and axially disposed between an inner insulator and outer insulator; wherein the axial inner cap is axially spaced from the inwardly facing lip by a distance that allows for the positioning of the probe sensor electronics and a conductor strap between the axial inner insulator and the axial outer insulator; wherein the outer cap has an axial bottom surface positioned against the inner cap and the axial bottom of the outer cap is axially downwardly biased to transmit an assembly preload to internal components against the radially inwardly facing lip of the housing; and wherein the electronic lead is axially extending through the plurality of caps through the radially centered inner lead opening and the radially centered outer lead opening to an exterior of the probe; wherein the outer insulator provides insulation between conductors, which includes a sensor wire, a strap and the probe sensor electronics, and a ground-plane, which includes the combination of the inner cap, the outer cap and the housing; and wherein the coordinates applied herein are shifted by ninety degrees compared with a typical coordinate system for a gas turbine engine, where the axial direction typically extends along a centerline of the engine.