# JASC 7722: Engine EGT/TIT Indicating System

- Type: JASC system/component code (FAA)
- ATA chapter: 77 Engine Indicating
- Title in the code table: ENG. EGT/TIT INDICATING SYSTEM
- Service difficulty reports: 1,198
- FAA code table: https://www.faa.gov/sites/faa.gov/files/JASC_Code.pdf#page=67
- Page: https://openairdocs.org/jasc/7722

## What it covers

For reports of exhaust gas temperature (EGT) or turbine inlet temperature (TIT) temperature sensing and indicating. Includes the EGT indicators for both reciprocating and turbine engines; and the TIT for turbine engines. Typical parts are wiring, turbine outlet temperature (TOT) indicator, EGT indicator, probe, harness, terminal, connector, indicator, sensor, transducer, transmitter, etc.

## Service difficulty reports (1,198, newest 50)

- [SDR I5PA2026092288807](https://openairdocs.org/sdr/I5PA2026092288807), Sep 22, 2026: Boeing 757230. PROBE. DAMAGED. ETOPS SIGNIFICANT REPORT, RT ENGINE EGT WENT BLANK. REPLACED RH EGT PROBE IAW AMM DUE TO FINDING ONE LOOSE STUD DURING I (N688SL)
- [SDR SWAA2026082514816](https://openairdocs.org/sdr/SWAA2026082514816), Aug 23, 2026: Boeing 7377H4. PROBE. OUT OF TOLERANCE. NR 2 ENGINE RED BOX ON TAKEOFF. C/W ENGINE EXCEEDANCE REVIEW IAW AMM 71-00-00, FOUND EGT MAX OF 965 DEG FOR 5 SECONDS. F (N283WN)
- [SDR CALA2026081218522](https://openairdocs.org/sdr/CALA2026081218522), Aug 9, 2026: Boeing 737824. EGT INDICATION. ACTIVATED. NR 1 ENG, HIGH EGT, EMERGENCY EGT RETURNED TO NORMAL. NR 1 ENGINE PERFORMED VISUAL INSP. INLET AND EXHAUST NO DSCREPANCI (N18223)
- [SDR AALA202608054893](https://openairdocs.org/sdr/AALA202608054893), Aug 1, 2026: Airbus A321231. SOLENOID VALVE. FAULT MESSAGE. AIRCRAFT WAS NOT GROUNDED: AN EMERGENCY WAS DECLARED INTO BOS DUE TO THE FLIGHT CREW REPORTING AN ENGINE 2 FAULT POSSIBL (N918US)
- [SDR 2026F00186](https://openairdocs.org/sdr/2026F00186), Jul 9, 2026: Airbus A321211. EGT INDICATION. ILLUMINATED. NR 1 ENGINE EGT OVER LIMIT, FLIGHT CREW OBSERVED TEMPERATURE 985 DEG C WITH MASTER CAUTION WARNING. (N966AD)
- [SDR CALA2026070817615](https://openairdocs.org/sdr/CALA2026070817615), Jul 6, 2026: Boeing 737724. PROBE. FAULTED. EGT ON NR 1 ENG SHOWED 954 AND IN YELLOW AT CLIMB THRUST CLIMB THRUST PERFORMED FIM 71-06 TASK 804, NO RED BOX AROUND DI (N23708)
- [SDR DALA2026061703620](https://openairdocs.org/sdr/DALA2026061703620), Jun 15, 2026: Boeing 737832. EGT INDICATION. ILLUMINATED. ATB/DE- DUE TO LEFT ENGINE AREA B EGT EXCEEDANCE DURING CLIMB. FOUND EGT SECTOR 2 (BOTTOM RIGHT) SIGNAL OUT OF RANGE AND (N376DA)
- [SDR CALA2025123012526](https://openairdocs.org/sdr/CALA2025123012526), Dec 28, 2025: Airbus A320232. THERMOCOUPLE. FAULTED. ENROUTE AT FL300, NR 1 ENG EGT INDICATED TEMPS BETWEEN 027 & -046 DEGREES C. CREW REPORTS READINGS TO BE NORMAL AT START (N471UA)
- [SDR 2025FA0000727](https://openairdocs.org/sdr/2025FA0000727), Oct 21, 2025: EGT INDICATION. INTERMITTENT. UPON 7TH TAKEOFF FOR PATTERN WORK, CYLINDER # 4 EGT ROSE IN THE RED, STUDENT PILOT INSTANTLY REDUCED POWER TO IDLE AND T (N1488M)
- [SDR CALA2025102110350](https://openairdocs.org/sdr/CALA2025102110350), Oct 17, 2025: Boeing 757224. EGT INDICATION. FALSE ACTIVATION. RTO 90 KTS. L EGT 807 DEG. NORMAL TEMP AT IDLE. BRAKE MAX TEMP BTMS 5. BRAKE TEMP BACK TO NORMAL AT THIS TIME. FOLLOWED  (N21108)
- [SDR DALA2025090206508](https://openairdocs.org/sdr/DALA2025090206508), Aug 26, 2025: Airbus BD5001A10. EGT INDICATION. ILLUMINATED. RIGHT ENGINE AUTO SHUTDOWN ON DESCENT WITH EGT EXCEEDANCE. RT ENGINE REPLACED. (LP# 7823306) (N136DQ)
- [SDR GTIA2025081439046](https://openairdocs.org/sdr/GTIA2025081439046), Aug 12, 2025: Airbus A320271N. EGT INDICATION. ILLUMINATED. ENG 2 EGT OVRLMT ON TOGA TAKEOFF-PERFORMED INSPECTION (GVI) OF THE ENG #2 EXHAUST AREA IAW AMM 72-00-00-210-812-A (REF T (N2565)
- [SDR DALA2025073105728](https://openairdocs.org/sdr/DALA2025073105728), Jul 29, 2025: Airbus A321213. PROBE. FALSE INDICATION. DIVERSION TO CVG FOR A RIGHT ENGINE EGT EXCEEDANCE. CORRECTIVE ACTION: REVIEWED FOQA DATA, EGT INDICATION ISSUE. REPLACE (N331DN)
- [SDR AALA202506302410](https://openairdocs.org/sdr/AALA202506302410), Jun 27, 2025: Boeing 737823. ENGINE. OVERTEMP. AIRCRAFT WAS GROUNDED: AN EMERGENCY WAS DECLARED DUE TO: EGT OVER TEMP ON THE NUMBER 2 ENGINE. AIRCRAFT DIVERTED TO AND  (N804NN)
- [SDR GTIA2025060938946](https://openairdocs.org/sdr/GTIA2025060938946), Jun 5, 2025: Airbus A320232. THERMOCOUPLE. OUT OF LIMITS. ENG. ONE EGT OVERLIMIT-FOUND #1 ENG THERMOCOUPLES READING OUT OF LIMITS. REPLACED ALL THERMOUCOUPLES ON #1 ENG PER AMM 7 (N604NK)
- [SDR AALA202505192967](https://openairdocs.org/sdr/AALA202505192967), May 17, 2025: Boeing 737823. PROBE. OVERTEMP. AIRCRAFT WAS GROUNDED: AN EMERGENCY WAS DECLARED DUE TO: ON THE TAKEOFF ROLL, ENGINE 2 EXCEED THE EGT LIMITS FOR 45 SECO (N868NN)
- [SDR AALA202504145215](https://openairdocs.org/sdr/AALA202504145215), Apr 13, 2025: Boeing 737823. PROBE. CONTAMINATED. AIRCRAFT WAS GROUNDED: AN EMERGENCY WAS NOT DECLARED DUE TO: ENGINE NUMBER 1 EGT IN AMBER DURING CLIMB OUT MAX TEMP SEEN (N852NN)
- [SDR AALA202504149958](https://openairdocs.org/sdr/AALA202504149958), Apr 13, 2025: Boeing 737823. PROBE. INACCURATE. AIRCRAFT WAS GROUNDED: AN EMERGENCY WAS NOT DECLARED DUE TO: ENGINE NUMBER 1 EGT IN AMBER DURING CLIMB OUT MAX TEMP SEEN (N852NN)
- [SDR AALA202504146002](https://openairdocs.org/sdr/AALA202504146002), Apr 13, 2025: Boeing 737823. PROBE. INACCURATE. AIRCRAFT WAS GROUNDED: AN EMERGENCY WAS NOT DECLARED DUE TO: ENGINE NUMBER 1 EGT IN AMBER DURING CLIMB OUT MAX TEMP SEEN (N852NN)
- [SDR AALA202412240615](https://openairdocs.org/sdr/AALA202412240615), Dec 23, 2024: Boeing 737823. EGT INDICATION. FALSE ACTIVATION. AIRCRAFT WAS GROUNDED: AN EMERGENCY WAS DECLARED DUE TO: NUMBER 2 ENGINE EGT INDICATED 929 ON CLIMB OUT MULTIPLE TIMES;  (N935NN)
- [SDR SWAA2024112772249](https://openairdocs.org/sdr/SWAA2024112772249), Nov 27, 2024: Boeing 73776N. PROBE. OUT OF LIMITS. #2 ENGINE HIGHER THAN NORMAL EGT (630) WHILE AT IDLE AFTER ENG START. TEMP OF NUMBER #1 ENG WAS (480) WHICH IS MORE NORM (N7846A)
- [SDR SWAA2024112772258](https://openairdocs.org/sdr/SWAA2024112772258), Nov 27, 2024: Boeing 73776N. HARNESS. OUT OF LIMITS. #2 ENGINE HIGHER THAN NORMAL EGT (630) WHILE AT IDLE AFTER ENG START. TEMP OF NUMBER #1 ENG WAS (480) WHICH IS MORE NORM (N7846A)
- [SDR SWAA2024101548828](https://openairdocs.org/sdr/SWAA2024101548828), Oct 11, 2024: Boeing 7377H4. PROBE. OUT OF LIMITS. ON TAKEOFF #2. EGT TURNED RED AND 933 DEGREES WAS RECORDED. ALL OTHER ENGINE INDICATIONS WERE NORMAL. ON TAKEOFF #2. EGT (N440LV)
- [SDR CALA2024100700756](https://openairdocs.org/sdr/CALA2024100700756), Oct 5, 2024: Boeing 777222. EGT INDICATION. ILLUMINATED. ENG2 SN. 222173 (TSI 7963) CREW REPORTED THAT #2 EGT EXCEEDED ON T-OFF. AHM SHOW ENG R EGT RED, MM MSG 77-62122, EXCEEDA (N795UA)
- [SDR DALA2024092509430](https://openairdocs.org/sdr/DALA2024092509430), Sep 24, 2024: Airbus A319114. EGT INDICATION. ILLUMINATED. SHIP 3170 -ATB- AIRCRAFT RETURNED TO MCO DUE TO RIGHT ENGINE EGT OVER LIMIT. CORRECTIVE ACTION: REPLACED NR 2 ENGINE. (L (N370NB)
- [SDR YENA2024091101257](https://openairdocs.org/sdr/YENA2024091101257), Sep 9, 2024: Airbus A321231. EGT INDICATION. ILLUMINATED. FLT#523, JFK-LAX. (AIRCRAFT DECLARED AN EMERGENCY INTO LAX) 'AT 1729 FT ON FINAL. ECAM ENG 2 EGT OVERLIMIT. THRUST WAS A (N923JB)
- [SDR CALA2024071800248](https://openairdocs.org/sdr/CALA2024071800248), Jul 11, 2024: Boeing 737924ER. PROBE. INOPERATIVE. AC 439 #1 ENG ESN 896345 CHRONIC HISTORY EGT INDICATION FAULTS, CURRENT EEC BITE CHECK FAULT 77-20861 FINDING IN LP 8564 (N57439)
- [SDR I5PA2024042368801](https://openairdocs.org/sdr/I5PA2024042368801), Apr 23, 2024: Boeing 757230. EGT INDICATION. READS HIGH. FLT NO: N/A (MX FINDING) ESI - R ENGINE REPLACEMENT REQUIRED. REPLACED R ENG PER TASK CARD 71-999-00-01. PERFORMED PERFO (N688SL)
- [SDR AALA202405020798](https://openairdocs.org/sdr/AALA202405020798), Mar 25, 2024: Airbus A321231. THERMOSTAT. DEFECTIVE. AIRCRAFT WAS GROUNDED: DURING TAKEOFF PASSING 2000 FT MOMENTARILY RECEIVED AN ENGINE 1 STALL ECAM ASSOCIATED WITH A LOUD (N161AA)
- [SDR ABXA2024012616](https://openairdocs.org/sdr/ABXA2024012616), Jan 26, 2024: Boeing 767231. WARNING MESSAGE. FALSE INDICATION. DURING TAXI RH ENG EGT OVERTEMP ON START EGT 562 AC RETURED TO GATE AND GROUNDED BY MAINTENANCE PERFORMED FIM 71-08 FAUL (N651GT)
- [SDR KY7A20230120038](https://openairdocs.org/sdr/KY7A20230120038), Dec 19, 2023: Swrngn SA227AC. COMPENSATOR. FAULTED. E1 DOESN'T MAKE TORQUE ON GROUND OR IN FLIGHT. REMOVED & REPLACED EGT COMPENSATOR AND PREFORMED ENGINE RIGGING CHECK PER (N31171)
- [SDR GTIA2023120137666](https://openairdocs.org/sdr/GTIA2023120137666), Nov 30, 2023: Airbus A321231. PROBE. FAULT MESSAGE. AT FL 340 ENG #1 EGT 273* ENG #2 EGT 403* ALL OTHER INDICATIONS NORMAL NO ECAM FAULT NO EXCEEDED LIMITATIONS-R/R TWO EGT (N676NK)
- [SDR HALA20231030239](https://openairdocs.org/sdr/HALA20231030239), Oct 29, 2023: Airbus A330243. UNKNOWN. UNKNOWN. ETOPS - ENG 1 OIL VENT TUBE THERMOCOUPLE #1 (TOP) PN: 02801TC001, FOUND BROKEN. REPLACED ENG 1 HP/IP VENT THERMOCOUPLE P (N390HA)
- [SDR ASAA2023090144936](https://openairdocs.org/sdr/ASAA2023090144936), Sep 1, 2023: Boeing 7379. PROBE. FAULTY. IN CRUISE, AT FL370, RECVD TEMP PROBE "A" MASTER CAUTION. GROUNDED - YES. REMOVED AND REPLACED TAT PROBE IAW AMM 34-21-0 (N942AK)
- [SDR 2023FA0000554](https://openairdocs.org/sdr/2023FA0000554), Aug 4, 2023: PROBE. FAILED. EGT PROBE P/N 8655 HAS NO CONTINUITY. (N892D)
- [SDR DALA2023053104341](https://openairdocs.org/sdr/DALA2023053104341), May 31, 2023: Airbus A320211. UNKNOWN. UNKNOWN. SHIP 3225 - ATB- PERFORMED AIR TURN BACK TO DTW DUE TO NUMBER 1 ENG OVER-TEMP. CREW PULLED THE THROTTLE BACK BUT EGT DID (N325US)
- [SDR DALA2023041803089](https://openairdocs.org/sdr/DALA2023041803089), Apr 15, 2023: Airbus A321213. UNKNOWN. UNKNOWN. SHIP 3008 -IFSD/DIV- DIVERSION TO MCO DUE TO LEFT ENGINE EGT INDICATING MAX OF 1203 DEG. CREW SHUT DOWN ENGINE PER QRH A (N308DN)
- [SDR YENA2023013000080](https://openairdocs.org/sdr/YENA2023013000080), Jan 29, 2023: Airbus A320232. ACTUATOR. FAILED. FLT#236, STI-JFK. (AIRCRAFT DIVERTED TO SDQ) 'ENGINE 1 EGT EXCEEDED ON TAKEOFF (TOGA) (630 C) THAN ON CLIMB (605 C). FUE (N705JB)
- [SDR AALA202301244418](https://openairdocs.org/sdr/AALA202301244418), Jan 12, 2023: Airbus A319132. THERMOCOUPLE. DEFECTIVE. AIRCRAFT WAS GROUNDED: AN EMERGENCY WAS DECLARED AND THE AIRCRAFT RETURNED TO DFW DUE TO LOOSING EGT INDICATION ON THE # (N801AW)
- [SDR AALA202301249254](https://openairdocs.org/sdr/AALA202301249254), Jan 12, 2023: Airbus A319132. THERMOCOUPLE. DEFECTIVE. AIRCRAFT WAS GROUNDED: AN EMERGENCY WAS DECLARED AND THE AIRCRAFT RETURNED TO DFW DUE TO LOOSING EGT INDICATION ON THE # (N801AW)
- [SDR AALA202301248261](https://openairdocs.org/sdr/AALA202301248261), Jan 12, 2023: Airbus A319132. THERMOCOUPLE. DEFECTIVE. AIRCRAFT WAS GROUNDED: AN EMERGENCY WAS DECLARED AND THE AIRCRAFT RETURNED TO DFW DUE TO LOOSING EGT INDICATION ON THE # (N801AW)
- [SDR AALA202301240841](https://openairdocs.org/sdr/AALA202301240841), Jan 12, 2023: Airbus A319132. THERMOCOUPLE. DEFECTIVE. AIRCRAFT WAS GROUNDED: AN EMERGENCY WAS DECLARED AND THE AIRCRAFT RETURNED TO DFW DUE TO LOOSING EGT INDICATION ON THE # (N801AW)
- [SDR AALA202301130855](https://openairdocs.org/sdr/AALA202301130855), Jan 12, 2023: Airbus A319132. INDICATION SYS. FAULTED. AIRCRAFT WAS GROUNDED: AN EMERGENCY WAS DECLARED AND THE AIRCRAFT RETURNED TO DFW DUE TO LOOSING EGT INDICATION ON THE # (N801AW)
- [SDR ASAA2023010241391](https://openairdocs.org/sdr/ASAA2023010241391), Jan 2, 2023: Boeing 737990ER. PROBE. FAULTED. #1 EGT WENT TO 911* IN THE YELLOW BAND AT 34000 FEET JUST BEFORE TOP OF DESCENT. ON DESCENT THRU 25000 FEET. THE EGT NOR (N431AS)
- [SDR OZCA340076221212](https://openairdocs.org/sdr/OZCA340076221212), Dec 12, 2022: Saab SF340A. TRIMMER. FAULTY. CROSSING 11,000 FT, RIGHT ENGINE ITT INCREASE UNCOMMANDED TO 872C (802C BEFORE INCREASE). PROCEEDED WITH QRH - REDUCING  (N671BC)
- [SDR DALA2022092606284](https://openairdocs.org/sdr/DALA2022092606284), Sep 23, 2022: Boeing 737832. NONE. NONE. SHIP 3720 -ATB/DE- DUE TO NBR 1 ENGINE EGT. DURING CLIMB OUT CREW HAD TO REDUCE POWER TO KEEP EGT IN LIMITS. CORRECTIVE  (N390DA)
- [SDR NACA2022090500001](https://openairdocs.org/sdr/NACA2022090500001), Sep 5, 2022: Boeing 767. NONE. NONE. RIGHT ENGINE EGT THERMOCOUPLE HARNESS HAS BROKEN LEAD WIRE. REMOVED AND REPLACED RIGHT ENGINE UPPER EGT THERMOCOUPLE CAB (N351CM)
- [SDR F3LA2022082300089](https://openairdocs.org/sdr/F3LA2022082300089), Aug 21, 2022: Airbus A321211. EGT INDICATION. OVERSPEED. DISCREPANCY: ENG2 2 EGT OVER LIMIT****SUPPLEMENTAL WILL BE SUBMITTED ONCE MORE INFORMATION BECOMES AVAILABLE**** (N721FR)
- [SDR AALA202206218459](https://openairdocs.org/sdr/AALA202206218459), Jun 19, 2022: Boeing 737823. PROBE. UNSERVICEABLE. AIRCRAFT WAS GROUNDED: #1 ENGINE EGT OVERTEMP ON TAKEOFF. EMERGENCY DECLARED, FLIGHT RETURNED TO DFW, LANDING SAFELY. RE (N814NN)
- [SDR 2022FA0000292](https://openairdocs.org/sdr/2022FA0000292), Jun 1, 2022: Boeing 777. NONE. NONE. EGT EXCEEDANCE ON RIGHT ENGINE AFTER TAKEOFF. CORRECTIVE ACTION: PERFORMED VISUAL INSPECT OF ENGINE NO DEFECTS NOTED & P (N828AX)

All 1,198: https://openairdocs.org/jasc/7722/reports.md

## Other codes in chapter 77

- [JASC 7700](https://openairdocs.org/jasc/7700): Engine Indicating System (705 reports)
- [JASC 7710](https://openairdocs.org/jasc/7710): Power Indicating System (191 reports)
- [JASC 7711](https://openairdocs.org/jasc/7711): Engine Pressure Ratio (EPR) (456 reports)
- [JASC 7712](https://openairdocs.org/jasc/7712): Engine BMEP/Torque Indicating (1,239 reports)
- [JASC 7713](https://openairdocs.org/jasc/7713): Manifold Pressure (MP) Indicating (77 reports)
- [JASC 7714](https://openairdocs.org/jasc/7714): Engine RPM Indicating System (1,357 reports)
- [JASC 7720](https://openairdocs.org/jasc/7720): Engine Temperature Indicating System (695 reports)
- [JASC 7721](https://openairdocs.org/jasc/7721): Cylinder Head Temperature (CHT) Indicating System (62 reports)
- [JASC 7730](https://openairdocs.org/jasc/7730): Engine Ignition Analyzer System (52 reports)
- [JASC 7731](https://openairdocs.org/jasc/7731): Engine Ignition Analyzer (15 reports)
- [JASC 7732](https://openairdocs.org/jasc/7732): Engine Vibration Analyzer (237 reports)
- [JASC 7740](https://openairdocs.org/jasc/7740): Engine Integrated Instrument System (53 reports)
- [JASC 7797](https://openairdocs.org/jasc/7797): Engine Indicating System Wiring (592 reports)

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