ATA 77 — Engine Indicating

7,546 parts classified under this chapter

Reliability rollup

96%Median scrap propensity

1,516 parts · 4,652 SDR reports

From FAA Service Difficulty Reports

Part Number	Description	Manufacturer	Airframe	ATA	Category	Status
Westron Torque Inc. 522-823	Electronic Torque Ind	—	—	77	Instruments	OEM
WG P/N 8901-118, GE P/N 7003M94P06	CIT SENSOR	Woodward	—	77	Instruments	PMA
Wiring Harness -EEC Input 795268	Harness, Bifurcation, Rohr B-Package	—	—	77	Instruments	OEM
Wiring Harness EEC Input 795269	Core Harness, Double Avg., Rohr B Pkg	—	—	77	Instruments	OEM
WL101EED2	IND	GE Aviation Systems Ltd	737	77	Instruments	OEM
WL101EED3	N1 INDICATOR	—	737-300 737	77	Instruments	OEM
WL201EED2	IND	GE Aviation Systems Ltd	737	77	Instruments	OEM
WL202EED	EGT IND	—	737-300 737	77	unknown
WL202EED3	IND	GE Aviation Systems Ltd	737	77	Instruments	OEM
WL202EED4	EGT INDICATOR	—	737-300 737-500+1	77	Instruments
WL202EED6	EGT INDICATOR	SMITHSIND	737-300 737-400+1	77	Instruments	OEM
WL20EE06	INDICATOR	—	737-400	77	unknown	OEM
WL301EED2	INDICATOR-ENGINE SPEED N1	—	—	77	Instruments
WL301EED3	INDICATOR-ENGINE SPEED N1	—	—	77	Instruments
WL301EED4	INDICATOR-ENGINE SPEED N1	—	—	77	Instruments
WL302EED2	INDICATOR-EPR	—	—	77	Instruments
WL302EED3	INDICATOR-EPR	—	—	77	Instruments
WL3301KTD6	INDICATOR	—	—	77	unknown	OEM
WL351EED3	INDICATOR-ENGINE SPEED N2	—	—	77	Instruments
WL351EED4	INDICATOR-ENGINE SPEED N2	—	—	77	Instruments
WL351EED5	INDICATOR-ENGINE SPEED N2	—	—	77	Instruments
WL351EED6	INDICATOR-ENGINE SPEED N2	—	—	77	Instruments
WL351EED8	INDICATOR-ENGINE SPEED N2	—	—	77	Instruments
WL352EED10	INDICATOR-EGT	—	—	77	Instruments
WL352EED3	INDICATOR-EGT	—	—	77	Instruments
WL352EED4	INDICATOR-EGT	—	—	77	Instruments
WL352EED6	INDICATOR	Airbus	A300	77	Instruments	OEM
WL352EED8	INDICATOR-EGT	—	—	77	Instruments
WL354EED2	INDICATOR-ENGINE SPEED N1	—	—	77	Instruments
WL354EED3	INDICATOR-ENGINE SPEED N1	—	—	77	Instruments
WL706RSA4	INDICATOR	—	BAe 146	77	Instruments	OEM
WL719RSA1	INDICATOR	—	—	77	unknown
WO635	HARNESS	—	777-200	77	Electromechanical	OEM
Woodward P/N 1680-640	Speed Sensor Model A-270000-1	—	—	77	Instruments	OEM
WS2C7	Westach Fuel Level Gauge 2	Westach	—	77	Instruments	PMA
WS2DA1020	Westach Dual Amps / Volt 18-28 VDC	Westach	—	77	Instruments	PMA
WS3AQ9	Westach Quad Ws3Aq9	Westach	—	77	Instruments	PMA
WS3AT8A26	Tachometer Rotax 8000 Rpm	Westach	—	77	Instruments	OEM
WSA3T13V	Westach Fuel Gauge Triple / 0-5 Volts	Westach	—	77	Instruments	PMA
WSK2C114	Westach CHT Kit 2 With 14MM Snd	—	—	77	Instruments	OEM
WSK2DA1142DWK	Westach Dual CHT/EGT With Senders	—	—	77	Instruments	OEM
WSK3DA1142DWK	Dual CHT/EGT With 2Dwk Rtx Sndrs	—	—	77	Instruments	OEM
WSK3DA1144D6K	Dual CHT/EGT With 4D6K Rtx Sndrs	—	—	77	Instruments	OEM
WSK3DA24D6K	Westach 3DA2 Dual EGT With Send	—	—	77	Instruments	OEM
X12060	BEARING	—	—	77	unknown
Y3AT8A	Westach Tach/Hourmeter 3 1/8"	Westach	—	77	Instruments	OEM
Zenair D1-111-5076	Manifold Pressure Gauge	—	—	77	Instruments	OEM
Zenair PS-211-8112	Temperature Sender	—	—	77	Instruments	OEM