# Service difficulty reports: JASC 7520

A list on [JASC 7520](https://openairdocs.org/jasc/7520.md).

Reports filed under 7520 · Engine Cooling System, newest first.

Page 1 of 7 · 328 reports

- [SDR YENA2026082400696](https://openairdocs.org/sdr/YENA2026082400696.md): Warning Message · illuminated · Aug 21, 2026 · N2193J · Airbus A321271NX
  > FLT 72, EDI-JFK. (ETOPS) AFTER LANDING, ENG 2 TURB COOL FAULT. CAUTION MSG ( TCC/TACC VALVE). OPEN
- [SDR SWAA2026081028117](https://openairdocs.org/sdr/SWAA2026081028117.md): Bracket · cracked · Aug 6, 2026 · N8893L · Boeing 7378
  > NR 1 ENGINE LPTACC LOWER MANIFOLD SUPPORT BRACKET AT 9 O'CLOCK POSITION WAS CRACKED AT FWD ATTACH POINT. R & R NR 1 ENGINE LPTACC LOWER MANIFOLD SUPPORT BRACKET AT 9 O'CLOCK POSITION IAW AMM 75-24-03
- [SDR SWAA2026081089026](https://openairdocs.org/sdr/SWAA2026081089026.md): Bracket · cracked · Aug 6, 2026 · N8893L · Boeing 7378
  > NR 1 ENGINE, LPTACC LOWER MANIFOLD SUPPORT BRACKET JUST BELOW THE 9 O'CLOCK POSITION WAS CRACKED AT FWD ATTACH POINT. R & R NR 1 ENG, LPTACC LOWER MANIFOLD SUPPORT BRACKET JUST BELOW THE 9 O'CLOCK POSITION IAW AMM 75-24-03.
- [SDR SWAA2026081087653](https://openairdocs.org/sdr/SWAA2026081087653.md): Bracket · cracked · Aug 6, 2026 · N8893L · Boeing 7378
  > NR 1 ENGINE, LPTACC LOWER MANIFOLD SUPPORT BRACKET AT 3 O'CLOCK POSITION WAS CRACKED AT FWD ATTACH POINT. R & R THE NR 1 ENG LPTACC LOWER MANIFOLD SUPPORT BRACKET AT 3 O'CLOCK POSITION IAW AMM 75-24-03.
- [SDR SWAA2026072344101](https://openairdocs.org/sdr/SWAA2026072344101.md): Valve · leaking · Jul 22, 2026 · N8509U · Boeing 7378H4
  > NR 1 ENGINE STEADY FUEL LEAK AFTER ENGINE START. REMOVED AND REPLACED HTPACC PER AMM 75-21-01.
- [SDR AALA202606123906](https://openairdocs.org/sdr/AALA202606123906.md): Line · disconnected · Jun 10, 2026 · N466AN · Airbus A321253NX
  > AIRCRAFT WAS GROUNDED: AN EMERGENCY WAS DECLARED AND THE AIRCRAFT RETURNED TO LAX DUE TO THE FLIGHT CREW REPORTING THAT DURING CLIMB OUT AN ENGINE 1 TIP CONTROL FAULT OCCURRED. THE AIRCRAFT LANDED SAFELY AT LAX WITHOUT FURTHER INCIDENT. UPON INSPECTION OF NR
- [SDR UIEA2026032700108](https://openairdocs.org/sdr/UIEA2026032700108.md): Switch · shorted · May 12, 2026 · N1619A · Boeing 7673Y0
  > DURING PREPARATION FOR ENG #2 COOLING BAROMETRIC SWITCH, OPS CHK FOUND DAMAGE TO A SCREW AT NACELLE ZONE VENT SOV. AFTER INVESTIGATING, WE FOUND THAT THIS SCREW WAS TOUCHING THE FEEDER CABLES. TWO CABLES GOT DAMAGED AND PRODUCED ARCING TO THE VALVE HOUSING SCR
- [SDR DALA2026031001643](https://openairdocs.org/sdr/DALA2026031001643.md): Valve · binding · Mar 8, 2026 · N963AT · Boeing 717200
  > SHIP 9522 CREW REPORTS STRONG DIRTY SOCK SMELL IN BACK OF AIRCRAFT. CORRECTIVE ACTION: FOUND #2 ENG SOURCE R/R #2 ENG BUFFER AIR VALVE FOUND IT BINDING & STIFF IN REF B717 AMM 75-22. CKS GOOD. (1485009)
- [SDR BAGA2026021900004](https://openairdocs.org/sdr/BAGA2026021900004.md): Shutoff Valve · failed · Feb 16, 2026 · N219BZ · Airbus BD5001A11
  > RIGHT NEACELLE OVERHEAT CAUTION MESSAGE IN FLIGHT. CLEARED AFTER RUNNING CHECKLIST. GOT MESSAGE AGAIN AFTER GOING BACK TO CLIMB POWER. RETURNED TO FIELD. REMOVED AND REPLACED BUFFER SHUT OFF VALVE. OPS AND LEAK CHECKS GOOD.
- [SDR YENA2025101601041](https://openairdocs.org/sdr/YENA2025101601041.md): Valve · faulted · Oct 16, 2025 · N2193J · Airbus A321271NX
  > FLT#1178, LAS-BOS. (ETOPS) CR 2 ALERT (APPROVAL REQUIRED FOR RESOLUTION) ENG 2 TURB COOL FAULT AFTER LANDING ( TCC/TACC VALVE); REMOVED AND REPLACED ENG 2 TURBINE CASE COOLING AIR VALVE IAW AMM 75-24-01. OPS CK GOOD. PLACARD REMOVED, MX-4 UPDATED, MCC NOTIFI
- [SDR BAGA2025081100004](https://openairdocs.org/sdr/BAGA2025081100004.md): Shutoff Valve · failed · Aug 8, 2025 · N220BZ · Airbus BD5001A11
  > OIL ODOR IN FWD CABIN. R & R RT ENGINE BAV & ENGINE BUFFER AIR SHUTOFF VALVE. OPS CHECKED GOOD. NO MEDICAL ATTENTION NEEDED FOR PAX OR CREW. EMERGENCY WAS DECLARED.
- [SDR SWAA2025072895274](https://openairdocs.org/sdr/SWAA2025072895274.md): Valve · leaking · Jul 24, 2025 · N8310C · Boeing 7378H4
  > FUEL LEAKING #2 ENGINE COWLING<[01] R-R?D #2 ENG HPTACC VALVE <BR>& LEAK/OPS CHECK GOOD PER AMM 75-21-01<BR><BR>E142282
- [SDR IPXA202507074238](https://openairdocs.org/sdr/IPXA202507074238.md): Link · worn · Jul 5, 2025 · N325UP · Boeing 76734AF
  > WORN OUT SUPPORT LINK, NO.2 ENG R/H HPT CASE COOLING FWD DUCT UPPER SIDE, NEAR FUEL SUPPLY LINE. (REPLACE) OK TO WORK
- [SDR IPXA2025070762480](https://openairdocs.org/sdr/IPXA2025070762480.md): Manifold · broken · Jul 4, 2025 · N325UP · Boeing 76734AF
  > BROKEN - MANIFOLD, NO.2 ENG LPT CASE COOLING, NEAR 11:00 AREA. I.A.W. AMM 75-24-03-004-050-H00 AND 75-24-03-404-037-H00, REV.145, REPLACED THE LPT COOLING MANIFOLD OF NO.2 ENGINE. JOB COMPLETED AND CONDITION CHECK NORMAL.
- [SDR AALA202507020782](https://openairdocs.org/sdr/AALA202507020782.md): Control Valve · faulted · Jun 30, 2025 · N411AN · Airbus A321253NX
  > AIRCRAFT WAS NOT GROUNDED: AN EMERGENCY WAS DECLARED AND THE AIRCRAFT RETURNED TO LAX DUE TO THE FLIGHT CREW REPORTING AN ENGINE #2 TIP CONTROL FAULT ECAM MESSAGE DURING CLIMBOUT WHICH ALERTED APPROXIMATLEY 8 TIMES. THE AIRCRAFT LANDED SAFELY AT LAX WITHOUT FU
- [SDR AALA202507010782](https://openairdocs.org/sdr/AALA202507010782.md): Warning Message · illuminated · Jun 30, 2025 · N411AN · Airbus A321253NX
  > AIRCRAFT WAS NOT GROUNDED: AN EMERGENCY WAS DECLARED AND THE AIRCRAFT RETURNED TO LAX DUE TO THE FLIGHT CREW REPORTING AN ENGINE #2 TIP CONTROL FAULT ECAM MESSAGE DURING CLIMBOUT WHICH ALERTED APPROXIMATLEY 8 TIMES. THE AIRCRAFT LANDED SAFELY AT LAX WITHOUT FU
- [SDR SWAA2025070186683](https://openairdocs.org/sdr/SWAA2025070186683.md): Valve · faulted · Jun 29, 2025 · N239WN · Boeing 7377H4
  > #1 ENG EGT ROSE RAPIDLY. #1 ENG EGT YELLOW ALERT FLASHED FOR 30 SECONDS. RETARTED #1 ENG THROTTLE; EGT RETURNED TO NORMAL R/R HPTACC VALVE PER AMM 75-21-01 NO LEAKS; TESTS PASSED
- [SDR I5PA2025061068802](https://openairdocs.org/sdr/I5PA2025061068802.md): Actuator · leaking · Jun 10, 2025 · N688SL · Boeing 757230
  > FOUND FUEL LEAK AT THE LH ENG TURBINE COOLING ACTUATER. R/R LH ENG TURBINE COOLING ACTUATER (TCA) PER AMM. OPS CHECK NORMAL PER AMM NO LEAKS FOUND.
- [SDR SWAA2025042124867](https://openairdocs.org/sdr/SWAA2025042124867.md): Support Bracket · cracked · Apr 15, 2025 · N472WN · Boeing 7377H4
  > #2 ENGINE LPTACC COOLING AIR TUBE ANGLE SUPPORT BRACKET SEPARATED AT FWD EDGE AT THE 4 0 CLOCK POSITION <[01]. REMOVED AND REPLACED #2 ENGINE LPTACC COOLING AIR TUBE ANGLE SUPPORT BRACKET @ 4 O CLOCK POSITION IAW PPBU 71-00-02.
- [SDR YENA2025041400397](https://openairdocs.org/sdr/YENA2025041400397.md): Check Valve · worn · Apr 11, 2025 · N2142J · Airbus A321271NX
  > FLT#1124, LAX-JFK. (ETOPS) ON DESCENT PASSING FL180 ENG 2 AIR SYS FAULT ECAM ANN AND QRH PROCEDURE COMPLETED -EVENTUALLY CLEARED; REF TSM 75-20-00-810-818-A #2 ENG BUFFER AIR CHECK VALVE WAS FOUND SEVERELY WORN REPLACED #2 ENG BUFFER AIR CHECK VALVE IAW AMM 7
- [SDR YENA2025040700369](https://openairdocs.org/sdr/YENA2025040700369.md): Sensor · failed · Apr 6, 2025 · N2142J · Airbus A321271NX
  > FLT#623, JFK-LAX. (ETOPS) 'ENG 2 AIR SYS FAULT ECAM ATCRUISE FL 340; REMOVED AND REPLACED BUFFER AIR VALVE PRESSURE SENSOR FIN 4057KS. REF AMM 75-26-22-400-801-A. REF HIGH POWER ASSURANCE ON ENG #2 LOG PG 4190431-1 (PERFORMED A HIGH POWER ASSURANCE TEST ON #2
- [SDR YENA2025040400365](https://openairdocs.org/sdr/YENA2025040400365.md): Buffer Valve · failed · Apr 2, 2025 · N2142J · Airbus A321271NX
  > FLT#2073, JFK-LAX. (ETOPS) 'ON DESCENT ENG 2 AIR SYS FAULT; ACCOMPLISHED TSM 75-26-00-810-818A STEP 7 REMOVED AND REPLACED VALVE BUFFER AIR PER AMM 75-26-02-000-801 AND 75-26-02-400-801, LEAK CHECK AND ENG ABOVE IDLE 80% N1 REQUIRED (PERFORMED TEST 17 TEST ABO
- [SDR NACA2025032800002](https://openairdocs.org/sdr/NACA2025032800002.md): Cooling Duct · cracked · Mar 28, 2025 · N321CM · Boeing 767323
  > #2 ENG MANIFOLD COOLING DUCT CRACK AT 7 AND 12 OCLOCK POSIITION. REPLACED 2 EA LPT COOLING AIR MANIFOLD
- [SDR NACA2025031100012](https://openairdocs.org/sdr/NACA2025031100012.md): Manifold · cracked · Mar 11, 2025 · N321CM · Boeing 767323
  > RIGHT ENGINE LPD MANIFOLD COOLING SKIN CRACK LEFT SIDE. REPLACED THE #10 LPT COOLING AIR MANIFOLD
- [SDR DALA2025030501715](https://openairdocs.org/sdr/DALA2025030501715.md): Valve · stiff · Mar 4, 2025 · N960AT · Boeing 717200
  > SHIP 9519 -ATB/FUME/DE- DURING CLIMB OUT AT ABOUT 10K FEET, THE FLIGHT CREW DECLARED AN EMERGENCY WITH ATC AND RETURNED TO MEM DUE TO UNKNOWN ODOR THROUGHOUT THE CABIN. CORRECTIVE ACTION: MAINTENANCE DISCOVERED THAT THE BUFFER AIR VALVE ON THE #2 ENGINE WAS VE
- [SDR AALA202410285317](https://openairdocs.org/sdr/AALA202410285317.md): Duct Seal · leaking · Oct 23, 2024 · N704US · Airbus A319112
  > AIRCRAFT WAS GROUNDED: AFTER TAKEOFF INTERMITTENT ENGINE FIRE INDICATION ENGINE NUMBER2. DURING EXECUTION OF COMPANY PROCEDURE ENGINE FIRE INDICATIONRESOLVED BY SELECTING AFFECTED ENGINE THRUST LEVER TO IDLE.CREW OBSERVED ELEVATED NACELLE TEMPERATURE ON AFFECT
- [SDR IPXA2024062589422](https://openairdocs.org/sdr/IPXA2024062589422.md): Strap · cracked · Jun 11, 2024 · N353UP · Boeing 76734AF
  > STRAP, NR 1 ENGINE LT HPT COOLING DUCT REAR FRAME FLANGE SUPPORT BRACKET RETAINING. IAW AMM 70-50-00-912-001-H00, REV.142, REPLACED THE STRAP WITH NEW & TORQUED THE NUTS. 2. COMPLETED THIS JOB AND CONDITION CHECK SATISFACTORY. 3. ATTACHMENTS ARE UPLOADED.
- [SDR HALA20240513131](https://openairdocs.org/sdr/HALA20240513131.md): Thermostat · faulted · May 11, 2024 · N360HA · Airbus A330243
  > ETOPS - ON DESCENT # 2 PACK OVERHEAT ECAM DISPLAYED FOLLOWED BY ENG 2 BLEED FAULT ECAM. COMPLETED ECAM ACTIONS. PERFORMED TSM 36-11-81-861-AO1.REMOVED AND REPLACED #2 ENG FAN AIR VALVE CONROL THERMOSTAT (FIN 5HA2) PER AMM 36-11-43. OPS AND LEAK CHECK GOOD. OK
- [SDR NACA2024050800002](https://openairdocs.org/sdr/NACA2024050800002.md): Switch · failed · May 8, 2024 · N563NC · Boeing 7673BG
  > FOUND THE BAROMETRIC SWITCH S495 MALFUNCTION. REMOVED AND REPLACED #2 ENG BAROMETRIC SWITCH S495 AS PER AMM 75-23-04. PART IS UNKNOWN TO TRAX.
- [SDR NACA2024050700005](https://openairdocs.org/sdr/NACA2024050700005.md): Valve · failed · May 7, 2024 · N563NC · Boeing 7673BG
  > L NAC COOLING VALVE TEST FAIL. REMOVED AND REPLACED THE NAC COOLING VALVE AS PER B767-300 AMM 75-23-02. PART IS UNKNOWN TO TRAX.
- [SDR HALA20240506126](https://openairdocs.org/sdr/HALA20240506126.md): Precooler · failed · May 3, 2024 · N389HA · Airbus A330243
  > ETOPS - AIR ENG 1 BLEED HI TEMP DURING DESCENT. REMOVED AND REPLACED #1 ENG PRE-COOLER PER AMM 36-11-42. LEAK CHECK GOOD. OK FOR SVC.
- [SDR NACA2024043000003](https://openairdocs.org/sdr/NACA2024043000003.md): Valve · failed · Apr 30, 2024 · N565NC · Boeing 7673BG
  > STATUS ON FINAL RH ENG A/O VALVE. REPLACED AIR/OIL VALVE IAW AMM 79-21-09 IDLE LEAK TEST GOOD.
- [SDR NACA2024042000003](https://openairdocs.org/sdr/NACA2024042000003.md): Warning Message · illuminated · Apr 20, 2024 · N30565 · Boeing 7673BG
  > RH ENG A/O VALVE STATUS MESSAGE. PERFORME BITE TEST, OPS CHECK GOOD NO MSG IAW FIM 71-01 FT 803.
- [SDR NACA2024042000002](https://openairdocs.org/sdr/NACA2024042000002.md): Valve · failed · Apr 20, 2024 · N565NC · Boeing 7673BG
  > RH ENGINE A/O VALVE STATUS MESSAGE. REPLACED AIR/OIL VALVE IAW AMM 79-21-09 OPS CHECK AND LEAK CHECK GOOD.
- [SDR ASAA2023102945873](https://openairdocs.org/sdr/ASAA2023102945873.md): Unknown · unknown · Oct 29, 2023 · N481AS · Boeing 737990ER
  > DURING TASK CARD 78273000 FOUND #2 ENGINE ECONOMIC RECENT FAULT 75-10362 "THE HPTACC POSITION SIGNAL IS OUT OF RANGE. GROUNDED - YES. REACCOMPLISHED TC 78273000. FAULT NOT PRESENT. THIS CLEARS PLT DEFERRAL. SEAMC ANDY NOTIFIED.
- [SDR ASAA2023102345816](https://openairdocs.org/sdr/ASAA2023102345816.md): Unknown · unknown · Oct 23, 2023 · N493AS · Boeing 737990ER
  > FOUND 4 ECONOMIC FAULTS ON #2 ENG HPTACC SIGNALS RECORDED FAULTS: 75-10462, 75-20412, 75-10412, 75-10362. GROUNDED - YES. ON DEFERRAL.
- [SDR ASAA2023102345792](https://openairdocs.org/sdr/ASAA2023102345792.md): Unknown · unknown · Oct 23, 2023 · N506AS · Boeing 737890
  > WHILE PERFORMING TASK CARD 78273000, FOUND ENGINE 2 FAULTMSG NBR: 75-10462 THE HPTACC DEMAND AND POSITION SIGNALS DISAGREE. ECONOMIC. GROUNDED - YES. ON DEFERRAL.
- [SDR ASAA2023092245252](https://openairdocs.org/sdr/ASAA2023092245252.md): Unknown · unknown · Sep 22, 2023 · N590AS · Boeing 737890
  > #2 ENGINE DRIPPING FUEL. OPENED #2 FAN COWL PER B737-800 AMM 71-11-02. INSPECTED ENGINE DRAINS. FOUND HPTACC VALVE DRIPPING.DURING IDLE ENGINE RUN, #2 ENGINE HPTACC VALVE LEAK RATE IS 3 DPM. DEFERRED PER AMM 71-71-00-200-801-F00. REPAIR REQUIRED WITHIN 25 FLIG
- [SDR ASAA2023091745220](https://openairdocs.org/sdr/ASAA2023091745220.md): Unknown · unknown · Sep 17, 2023 · N409AS · Boeing 737990ER
  > REF LP 60608120. AFTER PERFORMING IDLE RUN TEST FOR STARTER INSTALLATION AND CLOSING FAN COWLS FOUND STEADY FUEL DRIPPING FROM DRAIN AT BOTTOM OF COWLING #2 ENGINE. GROUNDED - YES. ON DEFERRAL.
- [SDR ASAA2023081644639](https://openairdocs.org/sdr/ASAA2023081644639.md): Unknown · unknown · Aug 16, 2023 · N493AS · Boeing 737990ER
  > WHILE ACCOMPLISHING T/C78273000 FAULT CODE 75-10462 APPEARED ON #2 ENGINE. THE HPTACC DEMAND AND POSITION SIGNALS DISAGREE, ECONOMIC FAULT MUST BE CORRECTED IN 500 HRS. GROUNDED - YES. ON DEFERRAL.
- [SDR ASAA2023072844315](https://openairdocs.org/sdr/ASAA2023072844315.md): Unknown · unknown · Jul 28, 2023 · N419AS · Boeing 737990ER
  > WHILE PERFORMING T/C 78273000 FOUND SHORT TIME FAULT 75-30602 THE TBV POSITIONS SIGNALS DISAGREE ON #2 ENG. GROUNDED - YES. (RESOLVED ON W/O: 1963318 TASKCARD: N/R-00003) REFERENCE DEFECT 60520579, CLEARS PLT SEAMC ASHRAF NOTIFIED. LP 60520579: PERFORMED FI
- [SDR ASAA2023072544233](https://openairdocs.org/sdr/ASAA2023072544233.md): Unknown · unknown · Jul 25, 2023 · N419AS · Boeing 737990ER
  > REFERENCE TASK CARD 78273000, #2 ENGINE HAS LONG TIME FAULT NUMBER 75-10592, THE TBV POSITION SIGNAL IS OUT OF RANGE. GROUNDED - YES. ON DEFERRAL.
- [SDR ASAA2023071744079](https://openairdocs.org/sdr/ASAA2023071744079.md): Unknown · unknown · Jul 17, 2023 · N512AS · Boeing 737890
  > WHILE ACCOMPLISHING T/C 78273000 FOUND ENG #2 ECONOMIC FAULT 75-10362 THE HPTACC POSITION SIGNALS IS OUT OF RANGE. GROUNDED - YES. ON DEFERRAL.
- [SDR ASAA2023071744078](https://openairdocs.org/sdr/ASAA2023071744078.md): Unknown · unknown · Jul 17, 2023 · N512AS · Boeing 737890
  > WHILE ACCOMPLISHING T/C 78273000 FOUND ENG #2 ECONOMIC FAULT 75-30412. THE HPTACC POSITION SIGNALS DISAGREE. GROUNDED - YES. ON DEFERRAL.
- [SDR ASAA2023072174077](https://openairdocs.org/sdr/ASAA2023072174077.md): Unknown · unknown · Jul 17, 2023 · N512AS · Boeing 737890
  > WHILE ACCOMPLISHING T/C 78273000 FOUND ENG #2 ECONOMIC FAULT 75-20462. THE HPTACC DEMAND AND POSITION SIGNALS DISAGREE. GROUNDED - YES. ON DEFERRAL.
- [SDR ASAA2023061443694](https://openairdocs.org/sdr/ASAA2023061443694.md): Unknown · unknown · Jun 14, 2023 · N564AS · Boeing 737890
  > #1 ENGINE LONG TIME FAULT. MSG NBR 75-10591. THE TBV POSITION SIGNAL IS OUT OF RANGE. GROUNDED - YES. ON DEFERRAL.
- [SDR ASAA2023060643772](https://openairdocs.org/sdr/ASAA2023060643772.md): Valve · faulty · Jun 6, 2023 · N583AS · Boeing 737890
  > TECH SERVICE REQUEST. GE DIAGNOSTICS IS REPORTING #1 ENGINE HPTACC FAULTS WITH COORESPONDING TREND SHIFTS. PRI2CNR 20230606039 ENG S/N 802957. GROUNDED - YES. ACCPMLISHED ACTUATORS TEST AND CHECK FAULT HISTORY NO FAULTS FOUND. REF AMM 71-00-00-700-807-F00. ALT
- [SDR DALA2023051703936](https://openairdocs.org/sdr/DALA2023051703936.md): Unknown · unknown · May 16, 2023 · N330NW · Airbus A320211
  > SHIP 3230 #1 ENGINE FAILED FADEC MOTORING TEST DURING PREFLIGHT. CH 1B FAULT-LPTC VLV. CORRECTIVE ACTION: INSTALLED NEW LPTACC PER A320 AMM 75-22-10. (2770013)
- [SDR ASAA2023040842829](https://openairdocs.org/sdr/ASAA2023040842829.md): Valve · leaking · Apr 8, 2023 · N506AS · Boeing 737890
  > CREW REPORTS FUEL LEAK UNDER #2 ENGINE. GROUNDED - YES. REMOVED & REPLACE HPTACC OF ENG 32 IAW B737-800 AMM 75-21-01.
- [SDR ASAA2023032442586](https://openairdocs.org/sdr/ASAA2023032442586.md): Valve · faulty · Mar 24, 2023 · N563AS · Boeing 737890
  > REPLACE #1 TBV DUE TO HISTORY OF FAULTS. GROUNDED - YES. REPLACED J6 HARNESS REF 73-21-06. REPLACED TBV IN REF TO B737-800 AMM 75-23-01 LEAK OPS CHECK GOOD.

Next page: https://openairdocs.org/jasc/7520/reports.md?page=2

## The whole list in SQL

Runs in DuckDB 1.2 or later on the release's Parquet files over HTTPS:

```sql
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 = '7520'
ORDER BY difficulty_date DESC
```

This list as a web page: https://openairdocs.org/jasc/7520/reports

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