General Electric T4.9 EGT Thermocouple

	Proven in-service reliability
	Superb erosion resistance at high temperatures
	Sole source for the EGT thermocouple

Weston Aerospace is the General Electric Aircraft Engines approved manufacturer for the T4.9 EGT thermocouple for all models of the CF6-80C2 and CF6-80E1 series of engines.

These probes have been designed to address several failure modes inherent in the probe previously used by GEAE (broken terminals, loss of IR, relaxed springs, oxidation of outer sheath) and have proven in-service reliability.

GEAE have now approved the new line of CF6-80E1 EGT thermocouples for use on the CF6-80C2 engine. This thermocouple utilizes a high life DSR142 sheath which offers superb erosion resistance at high temperatures. This probe will therefore not be subject to S/B 77 050.

Weston are also the sole source for the EGT thermocouple on all marks of GE90 for both production engines and spares.

Details Terminals
	Terminals have x4 over torque capability (to 120 lb.in)
	Threaded parts are made from Nitronic 60 which will not gall with harness nuts and has a high thread stripping resistance
Advantages
	Hastalloy X thermocouple element sheath provides high temperature erosion resistance
	Improved conductor stability compared to standard K type
	Fully interchangeable with current unit
	Extraction tool available to alleviate seizure problems during removal
Further Information
	GEAE p/n 9373M91P03 or 9373M91P05
	Full ongoing technical and spares support
	GEAE service bulletins: S/B 77-048, S/B 72-0872