JASC 7720

Service difficulty reports · 695

Reports filed under 7720 · Engine Temperature Indicating System, newest first.

Query with SQL
duckdb -csv -c "SELECT sdr_id, difficulty_date, n_number, aircraft_make, aircraft_model, part_name, part_condition, jasc_code, discrepancy
  FROM 'https://openairdocs.org/data/latest/faa_service_difficulty_report.parquet'
  WHERE jasc_code = '7720'
  ORDER BY difficulty_date DESC"

Prints the whole list as CSV. It reads the release’s Parquet files over HTTPS, so there’s nothing to download first. Install DuckDB to run it.

SDR ASAA2023110346003Unknown · unknownENG #2 DURING PERFORMING T/C 78273000 FOUND ECONOMIC MSG NBR: 77-20862 THE BOTTOM LEFT EGT SIGNAL (T495S3) IS OUT OF RANG. GROUNDED - YES. ON DEFERRAL.Nov 3, 2023 · N459AS · Boeing 737990ERSDR ASAA2023110346001Unknown · unknownENG ECONOMIC FAULT 77-20861. GROUNDED - YES. CHECKED AND CONFIRMED ENG FAULT 77-20861, ECONOMIC FAULT EGT BOTTOM LEFT T 495S3, RE-CHECK IN 50 FIT HOURS, RELEASED PER TC 78273000. RECHECKED NO FAULTS FOUND/SHOWN. THIS CLEARS PLT DEFERRAL.Nov 3, 2023 · N471AS · Boeing 737990ERSDR ASAA2023103045928Unknown · unknownWHILE PERFORMING TASK CARD 78273000, FOUND FAULT CODE 77-20871 THE TOP LEFT EGT SIGNAL (T495S4) IS OUT OF RANGE. ECONOMIC FAULT #1 ENG. GROUNDED - YES. ON DEFERRAL.Oct 30, 2023 · N474AS · Boeing 737990ERSDR ASAA2023103045927Unknown · unknownWHILE ACCOMPLISHING TC 78273000 ECONOMIC FAULT ON #2 ENG FOUND 77-20872 "TOP LEFT EGT SIGNAL (T495S4) IS OUT OF RANGE". GROUNDED - YES. ON DEFERRAL.Oct 30, 2023 · N517AS · Boeing 737890SDR ASAA2023102845869Unknown · unknownENGINE #2 FAULT CODE 77-20862THE BOTTOM LEFT EGT SIGNAL (T495S3) IS OUT OF RANGE ECONOMIC FAULT. GROUNDED - YES. ON DEFERRAL.Oct 28, 2023 · N419AS · Boeing 737990ERSDR ASAA2023102745871Unknown · unknownWHILE PREFORMING TASK CARD 78273000, FOUND FAULT 77-20861 "THE BOTTOM LEFT EGT SIGNAL (T495S3) IS OUT OF RANGE." ON ENGINE 1. FAULT IS AN ECONOMIC FAULT. GROUNDED - YES. ON DEFERRAL.Oct 27, 2023 · N403AS · Boeing 737900ERSDR ASAA2023102645849Unknown · unknownGE DIAGNOSTICS REPORTS #1 ENGINE TREND DATA SHOWS A DELTA EGT INCREASE AND EGT HOT DAY MARGIN DECREASE. EGT INDICATION ERRORS ARE SUSPECTED. GROUNDED - YES. PERFORMED B737-900 FIM 77-05 TASK 801. HAVE ECONOMIC FAULT 77-10841 TOP RH EGT T49581. PERFORMED PROBE Oct 26, 2023 · N431AS · Boeing 737990ERSDR ASAA2023102245765Unknown · unknownWHILE ACCOMPLISHING T/C 78273000, #2 ENG HAD ECONOMIC FAULT 77-20862, BOTTOM LEFT EGT SIGNAL. GROUNDED - YES. ON DEFERRAL.Oct 22, 2023 · N560AS · Boeing 737890SDR ASAA2023102145764Unknown · unknownWHILE PERFORMING TASK CARD 78273000 FAULT 77-20862 #2 ENGINE BOTTOM LEFT EGT SIGNAL(T495S3) OUT OF RANCE WAS FOUND ECONOMIC FAULT. GROUNDED - YES. ON DEFERRAL.Oct 21, 2023 · N459AS · Boeing 737990ERSDR ASAA2023101845728Unknown · unknownREF TC 78273000 ENG 1 ECON FAULT 77-20871 THE TOP LEFT EGT SIGNAL IS OUT OF RANGE (T495S4). GROUNDED - YES. ON DEFERRAL.Oct 18, 2023 · N440AS · Boeing 737990ERSDR ASAA2023101645675Unknown · unknownWHILE ACCOMPLISHING T/C 78273000 FOUND FAULT CODE 77-20861, THE BOTTOM LEFT EGT SIGNAL (T49553) IS OUT OF RANGE ON ENGINE #1. IS AN ECONOMIC FAULT. GROUNDED - YES. ON DEFERRAL.Oct 16, 2023 · N457AS · Boeing 737990ERSDR ASAA2023101645713Unknown · unknownTECHNICAL SERVICES RECEIVED EXCEEDANCE R06 REPORT POSSIBLE EGT EXCEEDANCE ON TAKEOFF FOR #2 ENGINE. (#PRIAOG/ETOPS). GROUNDED - YES. (RESOLVED ON W/O: 1973776 TASKCARD: N/R-00001 ) FOUND RED BOX DISPLAYED ON #2 EGT INDICATION ON CENTER DU. ACCOMPLISHED ENGINE Oct 16, 2023 · N472AS · Boeing 737990ERSDR ASAA2023101545694Unknown · unknownDURING EEC BITE TEST FOR #1 ENGINE FOUND FAULT MSG NBR 73-31371 (UPPER EGT SECTORS READING HIGH). REF T/C # 78273000. GROUNDED - YES. C/W B737-900 FIM 73-11 TASK 801. T49.5 PARAMETERS WERE WITHIN RANGE. EEC BITE TEST DID NOT SHOW FAULT IN FLIGHT LEG ZERO. NO FOct 15, 2023 · N487AS · Boeing 737990ERSDR ASAA2023101445614Unknown · unknown#2 ENG FAULT 77-20862 ECONOMIC FAULT BOTTOM LEFT EGT SIGNAL (T495S3) IS OUT OF RANGE. GROUNDED - YES. (RESOLVED ON W/O: 1973776 TASKCARD: N/R-00006 ) PERFORMED AMM TASK 71-00-00-800-804-F00 STEP 8(B) FOUND T523(S3) FAILED ON LAST 4 LEGS ON RECENT FAULT PAGE. POct 14, 2023 · N472AS · Boeing 737990ERSDR ASAA2023101345620Unknown · unknown#1 ENG FAULT CODE 73-31371 UPPER EGT SECTORS READING HIGH. ECO FAULT. GROUNDED - YES. (RESOLVED ON W/O: 1972371 TASKCARD: N/R-00003 ) TEMPURATURES INDICATED AS FOLLOWS: S1-72.90, S2-38.10, S3-40.17, S4-274.33. S4 TEMPERATURE VALUES IS OUT OF LIMITS ACCOMPLISHEOct 13, 2023 · N487AS · Boeing 737990ERSDR ASAA2023101145575Unknown · unknownWHILE PERFORMING TASK CARD 78225004 FOUND FAULT CODE 77-20871 THE TOP LEFT EGT SIGNAL T495S4 IS OUT OF RANGE. ECONOMIC FAULT #1 ENG. GROUNDED - YES. (RESOLVED ON W/O: 1972339 TASKCARD: N/R-00007 ) ACCOMPLISHED FIM 77-21 TASK 804. FOUND RESISTANCE CHECK OF J HAOct 11, 2023 · N593AS · Boeing 737890SDR ASAA2023100645470Unknown · unknownNUMBER 1 ENGINE ON TAKEOFF EGT GAUGE RED 15-20 SECONDS. GROUNDED - YES. ON DEFERRAL.Oct 6, 2023 · N592AS · Boeing 737890SDR ASAA2023100545465Unknown · unknownREF T/C 05-020-01 IN PRESENT LEG FAULTS MESSAGE 77-41614 "EGT PROBE 2 VALUE DOES NOT AGREE WITH THE AVERAGE OF ALL OTHER VALID EGT PROBE VALUES" IS SHOWING. GROUNDED - YES. ACCOMPLISHED B737-9 IFIM TASK G77-21-00-810-829 AND ENGINE IDLE SYSTEM TEST REF B737-9 Oct 5, 2023 · N979AK · Boeing 7379SDR ASAA2023100445464Unknown · unknownENGINE #2 ECONOMIC FAULTMSG #77-20862 THE BOTTOM LEFT EGT SIGNAL (T495S3) IS OUT OF RANGE. GROUNDED - YES. ON DEFERRAL.Oct 4, 2023 · N537AS · Boeing 737890SDR ASAA2023100445440Unknown · unknownWHILE PREFORMING TASK CARD 78273000 FOUND ON ENGINE #1 FAULT CODE 77-20861 THE BOTTOM LEFT EGT SIGNAL IS OUT OF RANGE. THIS FAULT IS ECONOMIC. GROUNDED - YES. ON DEFERRAL.Oct 4, 2023 · N419AS · Boeing 737990ERSDR ASAA2023092845353Unknown · unknownWHILE ACCOMPLISHING T/C 78273000, FOUND MAINTENANCE MESSAGE 77-20871 ON #1 ENG. THE TOP LEFT EGT OUT OF RANGE. ECONOMIC FAULT. GROUNDED - YES. ON DEFERRAL.Sep 28, 2023 · N569AS · Boeing 737890SDR ASAA2023092745444Engine · abnormalCFM REPORTS #1 ENGINE EGT INDICATION ISSUES AND TREND DATA SHOWS EXCESSIVE SCATTER IN DATA POINTS. GROUNDED - YES. TRANSFERRED TSR TO EBU SHOP W/O 1971172 N/R # 00004. #1 ENGINE CHANGED.Sep 27, 2023 · N565AS · Boeing 737890SDR ASAA2023092245240Unknown · unknownWHILE WORKING TASK CARD 78273000 FOUND FAULT CODE (77-20872) ENG 2 TOP LEFT EGT SIGNAL IS OUT OF RANGE ( T495S4). GROUNDED - YES. ON DEFERRAL.Sep 22, 2023 · N534AS · Boeing 737890SDR ASAA2023092145228Unknown · unknownWHILE PERFORMING T/C 78273000 FOUND #2 ENG TOP LEFT EGT SIGNAL IS OUT OF RANGE. FAULT 77-20872, ECONOMIC. GROUNDED - YES. ON DEFERRAL.Sep 21, 2023 · N535AS · Boeing 737890SDR ASAA2023091745175Unknown · unknown#2 ENG EGT EXCEEDED 913 DEGREES C ON TAKE OFF FOR ABOUT 3 SECONDS. (REF TSR714984) GROUNDED - YES. (RESOLVED ON W/O: 1970040 TASKCARD: N/R-00001) INTERROGATED CDU FOR ENGINE EXCEEDANCE PAGE CHECK PER AMM 71-00-00-740-801-F00, FOUND # 2 ENG EGT EXCEEDANCE WAS 9Sep 17, 2023 · N459AS · Boeing 737990ERSDR ASAA2023091645179Probe · faultedRED BOX ON #2 ENGINE EGT GAUGE UPON SHUTDOWN. NO OTHER ABNORMAL INDICATIONS THROUGHOUT FLIGHT. (REF TSR714980) GROUNDED - YES. (RESOLVED ON W/O: 1969938 TASKCARD: N/R-00001) PERFORMED ENG EXCEEDANCE PAGE CHK PER AMM 71-00-00-740-801-F00. NO EXCEEDANCES FOUND. Sep 16, 2023 · N409AS · Boeing 737990ERSDR ASAA2023091645172Unknown · unknownWHILE ACCOMPLISHING T/C 78273000 FOUND ON ENGINE 1 ECONOMIC FAULT MSG 77-20871 THE TOP LEFT EGT SIGNAL (T495S4) IS OUT OF RANGE,FLIGHT LEG #1. GROUNDED - YES. ON DEFERRAL.Sep 16, 2023 · N592AS · Boeing 737890SDR ASAA2023090444894Unknown · unknownWHILE WORKING TC78273000 FAULT CODE 77-20872 WAS NOTED. #2 ENG TOP LEFT EGT SIGNAL IS OUT OF RANGE, ECONOMIC FAULT. GROUNDED - YES. (RESOLVED ON W/O: 1967913 TASKCARD: N/R-00002 ) PERFORMED T/C 78273000 NO FAULTS DETECTED AT THIS TIME.THIS CLEARS PLT C/N 03085Sep 4, 2023 · N534AS · Boeing 737890SDR ASAA2023082644800Unknown · unknownPERFORMED ENGINE #2 BITE TEST FOUND FAULT CODE 77-20872 "TOP LEFT EFT SIGNAL (T495S4) IS OUT OF RANGE." ON FLIGHT LEG 0 AND 1. ECONOMIC FAULT. GROUNDED - YES. ON DEFERRAL.Aug 26, 2023 · N409AS · Boeing 737990ERSDR ASAA2023082544799Unknown · unknownWHILE FULLFILLING TASKCARD #05-020-01, PRESENT LEG FAULTS, FOUND ENGINE #1 SHOWS ECONOMIC FAULT #77-41632, "EGT PROBE 3 VALUE DOES NOT AGREE WITH THE AVERAGE OF ALL OTHER VALID EGT PROBE VALUES." INTERMMITENT FAULT HAS BEEN PRESENT ON MANY OTHER LEGS. GROUNDEDAug 25, 2023 · N971AK · Boeing 7379SDR 9WGA2023081935601Unknown · unknownDISCREPANCY: DURING HIGH-SPEED PORTION OF TAKEOFF ROLL, ENGINE 1 OVERTEMP. DURING CLIMB ENGINE 2 OVERTEMP. CORRECTIVE ACTION: PERFORMED ENGINE OVERTEMP INSPECTION OF ENGINE 1 & 2 IAW 72-00-00. NO DEFECTS NOTED, ENGINE OK FOR SERVICE.Aug 19, 2023 · N356KD · Boeing 747446FSDR ASAA2023080944495Unknown · unknownENGINE #2 ECONOMIC FAULT 77-20872 FOUND ON T/C 78273000 TOP LEFT EGT SIGNAL OUT OF RANGE. (REF 60636267) GROUNDED - YES. ON DEFERRALAug 9, 2023 · N517AS · Boeing 737890SDR ASAA2023080744470Unknown · unknownFOUND ECONOMIC FAULT CODE 77-20861, THE BOTTOM LEFT EGT SIGNAL (T495S3) IS OUT OF RANGE ON #1 ENGINE. GROUNDED - YES. (ITEM RESOLVE UNDER MDDR: 60591755) (RESOLVED ON W/O: 1964682 TASKCARD: N/R-00001 ) ACCOMPLISHED TASK CARD 78273000 INTERROGATE THE FMC CDU FOAug 7, 2023 · N403AS · Boeing 737900ERSDR ASAA2023080644467Unknown · unknownON DEPARTURE FROM LAS #1 ENGINE EGT EXCEEDED LIMIT OBSERVED 962. GROUNDED - YES. ON DEFERRAL.Aug 6, 2023 · N467AS · Boeing 737990ERSDR ASAA2023080544426Unknown · unknownFAULT ON ENG #1 (ECONOMIC) 77-20861 THE BOTTOM LEFT EGT SIGNAL OUT OF RANGE. GROUNDED - YES. ON DEFERRAL.Aug 5, 2023 · N419AS · Boeing 737990ERSDR ASAA2023080144353Unknown · unknownPER TASK CARD 7827300 #2 ENGINE, ECONOMIC FAULT MESSAGE # 77-20872. " THE TOP LEFT EGT SIGNAL (T495S4) IS OUT OF RANGE. GROUNDED - YES. (RESOLVED ON W/O: 1963963 TASKCARD: N/R-00003 ) VERIFIED FAULT IS ACTIVE ON ALL FLIGHT LEGS AND S4 SHOWS DASHES IN INPUT MONAug 1, 2023 · N530AS · Boeing 737890SDR ASAA2023073144332Unknown · unknownWHILE ACCOMPLISHING TC 78273000 ECONOMIC FAULT ON #2 ENG FOUND 77-20872 "TOP LEFT EGT SIGNAL (T49554) IS OUT OF RANGE". GROUNDED - YES. ON DEFERRAL.Jul 31, 2023 · N517AS · Boeing 737890SDR ASAA2023073144333Unknown · unknownON TAKEOFF POSSIBLE EGT EXCEEDANCE WITH #1 ENGINE EGT AT ABOUT 951*C AND #2 ENGINE EGT AT ABOUT 953*C. GROUNDED - YES. PERFORMED ENGINE EXCEEDANCE PAGE CHECK REF AMM 71-00-00. NO EXCEEDANCS NOTED ON EITHER ENGINE. PERFORMED EEC BITE REF FIM 73-00 TASK 801 ON BJul 31, 2023 · N566AS · Boeing 737890SDR ASAA2023072644256Unknown · unknown#1 ENGINE ECONOMIC FAULT. MSG # 73-31371. UPPER EGT SECTORS READING HIGH. GROUNDED - YES. ON DEFERRAL.Jul 26, 2023 · N565AS · Boeing 737890SDR ASAA2023072144157Unknown · unknown#2 ENGINE EGT SYSTEM FAILS ACCURACY CHECK REF AMM 77-21-00/201. INITIAL READINGS #2 ENGINE EGT S1 77.90 S2 37.78 S3 52.97 S4 92.29. GROUNDED - YES. ACCOMPLISHED #2 ENGINE EGT CLEANING AMM 77-21-00-140-801 REF LP 60520567 FOR PLT DEFERRAL RECHECK. NUMBERS BEFORJul 21, 2023 · N419AS · Boeing 737990ERSDR ASAA2023071744111Unknown · unknown#2 ENG EGT HAS A RED BOX INDICATION. GROUNDED - YES. PERFORMED FIM 71-06 TASK 805. FIRST PART OF FIM CHECKS EGT SYSTEM FOR ACCURACY PER AMM 77-21-00 PAGE 201 AND THIS CHECK FAILS. S1-S4 AND S2-S3 ARE NOT WITHIN THE REQUIRED TOLERANCE OF 25%. REFERENCE LOG PAGEJul 17, 2023 · N419AS · Boeing 737990ERSDR 2023FA0000378Engine · abnormalENGINE OVER TEMP ON START. T4 CIRCUIT BOARD TT UNKNOWNJul 16, 2023 · N340SF · Bolkms BK117C2SDR ASAA2023071544034Unknown · unknownMSG ECONOMIC FAULT CODE 77-90872 EGT SIGNAL OUT OF RANGE ENG #2. GROUNDED - YES. CLEANED S1 THRU S4 EGT PROBES REF B737-800 AMM 77-21-00 AND T/C N8420001 VERIFIED FAULT CODE NOT PRESENT AND EEC BITE CHECK PASS REF AMM 73-21-00.Jul 15, 2023 · N512AS · Boeing 737890SDR ASAA2023070943968Unknown · unknownWHILE ACCOMPLISHING T/C 78273000, FOUND ENG #1 ECONOMIC FAULT CODE 77-20871, "THE TOP LEFT EGT SIGNAL (T495S4) IS OUT OF RANGE." FLIGHT LEG 1. GROUNDED - YES. ON DEFERRAL.Jul 9, 2023 · N586AS · Boeing 737890SDR ASAA2023070943967Unknown · unknownWHILE ACCOMPLISHING T/C 78273000, FOUND ENG #1 ECONOMIC FAULT CODE 73-31371, "UPPER EGT SECTORS READING HIGH". FLIGHT LEG 3. GROUNDED - YES. ON DEFERRAL.Jul 9, 2023 · N586AS · Boeing 737890SDR ASAA2023070843948Unknown · unknownPERFORMING T/C 78273000 FOUND ENG #2 FAULT CODE 73-31372 "UPPER EGT SECTORS READING HIGH", ECONOMIC FAULT. GROUNDED - YES. ON DEFERRAL.Jul 8, 2023 · N593AS · Boeing 737890SDR ASAA2023070643911Unknown · unknownWHILE ACCOMPLISHING TC 78723000, ENG #2 HAD ECONOMIC FAULT 77-20862, BOTTOM LEFT EGT SIGNAL IS OUT OF RANGE. GROUNDED - YES. ON DEFERRAL.Jul 6, 2023 · N583AS · Boeing 737890SDR ASAA2023070543898Unknown · unknownFOUND ENG #1 ECONOMIC FAULT DURING TC 78273000. FAULT CODE 77-20871. EGT SIGNAL (T49554) IS OUT OF RANGE. GROUNDED - YES. ON DEFERRAL.Jul 5, 2023 · N593AS · Boeing 737890SDR ASAA2023062943816Unknown · unknownWHILE ACCOMPLISHED T/C 78273000, FOUND ENG 2 ECONOMIC FAULT 77-20862. THE BOTTOM LEFT EGT SIGNAL (T495S3) IS OUT OF RANGE FLIGHT LEG 1, 3, 4. GROUNDED - YES. ON DEFERRAL.Jun 29, 2023 · N586AS · Boeing 737890SDR ASAA2023062843817Unknown · unknownPER T/C 78273000, FOUND RECENT FAULT ON ENG #2. MSG# 77-20872, TOP LEFT EGT SIGNAL (T49554) IS OUT OF RANGE. ECONOMIC FAULT. 500 FLT. HRS. GROUNDED - YES. ON DEFERRAL.Jun 28, 2023 · N535AS · Boeing 737890
Back to JASC 7720