N446L

ATA 7250

Part: TURBINE WHEEL — DENTED (ENGINE)

DISK-HPT STG 1 DISPLAYS 111 SEPARATE INDENTATION TO SURFACE DT ON THE AFT SHAFT SPLINE AREAS. DR #02396459 STATES: THE CONDITION IDENTIFIED DEPARTS FROM THE INSTRUCTION FOR CONTINUED AIRWORTHINESS (ICA). THE CONDITION HAS BEEN EVALUATED AND A RECOMMENDATION TO DEPART FROM THE ICA CANNOT BE PROVIDED BECAUSE THE CONDITION COULD NOT BE SUBSTANTIATED. TO BE REPORTED IAW AMC-20 8A (J) ANY DEFECT IN A LIFE-CONTROLLED CRITICAL PART THAT CAUSES ITS RETIREMENT BEFORE THE COMPLETION OF ITS FULL-SERVICE LIFE.

ATA 7250

Part: CASE — CRACKED (HPT)

HPT STATOR CASE, THE SUBJECT HPT STATOR CASE HAS A CRACK FOUND TO THE BORESCOPE BOSS MEASURING APPROX. 0.600” IN LENGTH, REF SUBTASK 72-51-01-220-068. DR 02299847 STATES THE HPT CASE HAS BEEN SHIPPED TO THE FAILURE ANALYSIS LAB. TO BE REPORTED IAW AMC-20 8A (J) ANY DEFECT IN A LIFE-CONTROLLED CRITICAL PART THAT CAUSES ITS RETIREMENT BEFORE THE COMPLETION OF ITS FULL-SERVICE LIFE.

ATA 7250

Part: SEAL — FAILED (ENGINE)

SEAL-ROTATING AIR HPT FRONT (FOS) THE SUBJECT FOS HAS FAILED FPI FOR CRACKS ON DIM E SEAL TEETH. FPI INDICATION "1 OFF CRACK 0.06" IN LENGTH GOING OVER INNER SEAL TEETH. 3 OTHER INDICATIONS ALSO OBSERVED; 0.04", 0.025", 0.015". DR 02298827 WAS REJECTED BY THE OEM AS “CFM HAS NO SUBSTANTIATION TO ACCEPT THE REPORTED CONDITION AND THEREFORE RECOMMENDED TO SCRAP THE PART”. TO BE REPORTED I.A.W AMC-20-8A (J) ANY DEFECT IN A LIFE-CONTROLLED CRITICAL PART THAT CAUSES ITS RETIREMENT BEFORE THE COMPLETION OF ITS FULL-SERVICE LIFE.

ATA 7250

Part: SEAL — DENTED (ZONE 400)

DURING INCOMING INSPECTION AT GE WALES, DEFECTS ON THE INTERSTAGE SEAL HAVE BEEN NOTED. THE INTERSTAGE SEAL HAS 6 DENTS TO 5 CROSSOVER PAD HOLE EDGES. DR # 02214321 WAS REJECTED BY THE OEM AS THE CONDITION COULD NOT BE SUBSTANTIATED. PLEASE NOTE, THE PART WILL NEVER BE SALVAGEABLE. TO BE REPORTED I.A.W AMC-20 9.3 (J) ANY DEFECT IN A LIFE-CONTROLLED CRITICAL PART THAT CAUSES ITS RETIREMENT BEFORE THE COMPLETION OF ITS FULL SERVICE LIFE.

ATA 7250

Part: TURBINE — WORN

DURING INCOMING INSPECTION AT GE WALES, A DEFECT ON THE SEAL-ROATING AFT HPT HAS BEEN NOTED. THE HPT AFT ROTATING SEAL EXHIBITS WEAR TO THE SUMP SEAL TEETH X2 AND X3, WITH WEAR/BURRS/DISCOLORATION OVER AN ARC OF 7.120" FOR TOOTH X3, AND AN ARC OF 6.165" FOR TOOTH X2. NO LIMITS FOR WEAR TO UNCOATED SEAL TEETH WITHIN SUBTASK 72-53-05-220-053. THIS IS A KNOWN SERVICE RUN CONDITION. OEM ENQUIRY #02174724 CONFIRMED ‘EXISTING GE90-100 ESM INSPECTION REQUIREMENTS ARE ADDRESSING THE CONTINUED AIRWORTHINESS REQUIREMENT FOR THE AFFECTED PART AND THERE ARE NO FURTHER AIRWORTHINESS CONCERN WITH REPORTED FINDINGS AS THE PARTS ARE RECOMMENDED TO REMOVE FROM SERVICE. PREVIOUS OEM ENQUIRY # 00729612 SUGGESTS A ‘REPAIR OR LIMIT CHANGE IS PLANNED BUT IS NOT YET AVAILABLE. TO BE REPORTED IN LINE WITH MANDATORY REPORTING REQUIREMENT 145 AMC 20-8A (J) ANY DEFECT IN A LIFE-CONTROLLED CRITICAL PART THAT CAUSES ITS RETIREMENT BEFORE THE COMPLETION OF ITS FULL SERVICE LIFE.

ATA 7250

Part: CASE — CRACKED (HPT)

DURING INCOMING INSPECTION AT GE WALES, A DEFECT ON THE HIGH PRESSURE TURBINE (HPT) CASE HAS BEEN NOTED. CRACKS HAVE BEEN OBSERVED ON THE HPT CASE DURING SB 72-1197. THE CRACKS WERE NOT VISIBLE UNDER WHITE LIGHT ONLY BUT WERE OBSERVED DURING FPI INSPECTION. THE BORESCOPE PORT IS AFFECTED BY CRACKS IN ONE LOCAL AREA WHERE THE PORT MEETS THE CASE WALL. THE COOLING PORTS ARE ALSO AFFECTED BY INDICATIONS INTERPRETED AS CRACKS. THE INDICATIONS AFFECTING THE COOLING PORTS ARE SIGNIFICANTLY SMALLER THAN THOSE AFFECTING THE BORESCOPE PORT. MULTIPLE COOLING PORT AROUND THE CASE ARE AFFECTED BY THE SAME PATTERN OF INDICATIONS. THIS IS A KNOWN CONDITION. DR #02161432 REJECTED BY THE OEM. TO BE REPORTED I.A.W MANDATORY REPORTING REQUIREMENTS IN PART 145 AMC 20-8A (J) ANY DEFECT IN A LIFE-CONTROLLED CRITICAL PART THAT CAUSES ITS RETIREMENT BEFORE THE COMPLETION OF ITS FULL SERVICE LIFE.

ATA 7250

Part: SEAL — WORN (HPT)

DURING INCOMING INSPECTION AT GE WALES, A DEFECT ON THE SEAL-INTERSTAGE HPT ROTOR (HPTR) HAS BEEN NOTED. THE HPTR INTERSTAGE SEAL EXHIBITS 1 AREA OF WEAR (CONSISTING OF 5 INDIVIDUAL SPOTS OF WEAR, GROUPED INTO 4 LOCATIONS) TO THE FILLET BETWEEN THE STG 2 DISK INTERFACE/AFT RABBET, TO A MAXIMUM DEPTH OF 0.004 INCH. THIS IS A KNOWN SERVICE RUN CONDITION. DR #02158237 REJECTED BY THE OEM. TO BE REPORTED IN LINE WITH MANDATORY REPORTING REQUIREMENT 145 AMC 20-8A (J) ANY DEFECT IN A LIFE-CONTROLLED CRITICAL PART THAT CAUSES ITS RETIREMENT BEFORE THE COMPLETION OF ITS FULL SERVICE LIFE.

ATA 7250

Part: HP TURBINE — DAMAGED (ENGINE)

INCOMING CONDITION HIGHLIGHTED IN THE INSPECTION PROCESS. THERE IS LOCALISED PITTING ON AREA UC3 BETWEEN DOVETAIL POST 26 AND 27. THE PITTING ENCROACHES PAST THE BREAKPOINT INTO THE FORWARD MIDDLE RADIAL RABBET. DR# 02035694 REJECTED. TO BE REPORTED IN LINE WITH MANDATORY REPORTING REQUIREMENT 145 AMC 20-8A 9.3.(J) ANY DEFECT IN A LIFE-CONTROLLED CRITICAL PART THAT CAUSES ITS RETIREMENT BEFORE THE COMPLETION OF ITS FULL SERVICE LIFE.

ATA 7250

Part: TURBINE WHEEL — FAILED INSP (ENGINE)

THE HPT STAGE 1 DISK HAS BEEN REMOVED FROM SERVICE EARLY DUE FAILED ULTRASONIC INSPECTION FOR SIGNAL NOISE RATIO IAW SP008. DR  #02018991 WAS REJECTED BY OEM. TO BE REPORTED IN LINE WITH MANDATORY REPORTING REQUIREMENT PART 145 AMC 20-8A 9.3.(J) ANY DEFECT IN A LIFE-CONTROLLED CRITICAL PART THAT CAUSES ITS RETIREMENT BEFORE THE COMPLETION OF ITS FULL-SERVICE LIFE.

ATA 2497

Part: CONNECTOR — WRONG PART (ENGINE)

THROUGH THE IDG HARNESS REPAIR/ASSEMBLY PROCESS AT GE WALES, A TECHNICIAN HAS HIGHLIGHTED A POTENTIAL ISSUE WITH AN IDG HARNESS CONNECTOR. THE CONNECTOR HAS BEEN SENT TO THE MANUFACTURE, WHO HAS CONFIRMED THERE IS AN ALUMINIUM BARREL INSTALLED WITHIN THE CONNECTOR, WHICH SHOULD BE MADE OF STEEL. A REVIEW HAS CONFIRMED THAT 4 EFFECTED CONNECTORS HAVE BEEN FITTED TO ENGINES, THAT HAVE BEEN RELEASED FROM THE GE WALES SHOP. A BOEING CASE HAS BEEN RAISED (EMM-EMM-24-0120-05B) AND BOEING HAVE RESPONDED WITH A RECOMMENDED ACTION, TO REPLACE THE CONNECTOR NO LATER THAN THE 21ST JULY 2024. CUSTOMERS HAVE BEEN NOTIFIED. REPORTED IN LINE WITH MANDATORY REPORTING REQUIREMENT 145 AMC 20-8A 9.3.(K) THE USE OF PRODUCTS, COMPONENTS, OR MATERIALS FROM AN UNKNOWN OR SUSPECT ORIGIN.

ATA 7250

Part: SEAL — DEFORMED (ENGINE)

INCOMING CONDITION HIGHLIGHTED IN THE INSPECTIONPROCESS. THE FORWARD MIDDLE RABBET EXHIBITS A DENT WITH BULGING ONTO SURFACE SM AND THEREIS FRETTING TO SURFACE NJ. DR#01980345 REJECTED. FIRST TIME EXPOSURE OF THIS AREA FROMNEW MAKE. SERVICE RUN CONDITION, NOT A GE WALES INDUCED CONDITION. TO BE REPORTED IN LINEWITH MANDATORY REPORTING REQUIREMENT 145 AMC 20-8A 9.3.(J) ANY DEFECT IN A LIFE-CONTROLLED CRITICAL PART THAT CAUSES ITS RETIREMENT BEFORE THE COMPLETION OF ITS FULL SERVICE LIFE.

ATA 7250

Part: SEAL — NICKED (ENGINE)

ON INCOMING INSPECTION, A NICK/SCRATCH HAS BEEN FOUND ON 1 OFF AIR HOLE AFT CHAMFER, MEASURING: CIRCUMFERENTIAL 0.018 RADIAL 0.005 AXIAL (DEPTH) 0.0009. IT WAS NOTED THAT A SHOT PEEN LAYER WAS PRESENT, INDICATING THE CONDITION HAD POTENTIALLY BEEN PREVIOUSLY REPAIRED. PART FITTED LAST SHOP VISIT AT WALES, IN AN OVERHAULED CONDITION FROM AN EXTERNAL SUPPLIER. DR 01924619 REJECTED BY THE OEM. PART HAS BEEN REMOVED FROM SERVICE. SUPPLIER INFORMED TO INVESTIGATE.