WESTERN GLOBAL AIRLINES, INC.

Sanction: $71,250 · case closed 2021-07-26

Part: ENGINE — POWER LOSS (NR 1) · airframe 100,108 hrs · 18,701 cycles

AIRCRAFT TAKEOFF FROM JIB AIRPORT, DURING CLIMB OUT ENG 1 VIB 5.1 FOLLOWED BY RAPID DECELERATION OF N1 W/HIGH BUFFETING, SHUTDOWN ENG 1, AIRCRAFT RETURNED SAFELY TO JIB AIRPORT.

Part: UNKNOWN — UNKNOWN · airframe 83,833 hrs · 17,072 cycles

ENGINE 2 SHUTDOWN EICAS, CONTINUOUS CLICKING BEHIND FIRE HANDLE PANEL, LESS THAN 68% NO CLICKING, AFTER LANDING CLICKING CONTINUED, OIL PRESS SNS 2, ENG 2 FUEL SHUTOFF VALVE.

Part: SHEAR TIE — CRACKED (ZONE 100) · airframe 94,698 hrs · 15,226 cycles

DURING HEAVY CHECK, CRACK FOUND ON THE CENTER TANK STA 1000 FRONT SPAR SHEAR TIE, LBL 33.99, (NR 041073, SEQ 873). REMOVED AND REPLACED SHEAR TIE AT CENTER TANK STA. 1000 FRONT SPAR, LBL 33.99, IAW SRM 51-40-02 AND SB 747-53A2904.

Part: SHEAR TIE — CRACKED (ZONE 100) · airframe 94,698 hrs · 15,226 cycles

DURING HEAVY CHECK, CRACK FOUND ON THE CENTER TANK STA 1000 FRONT SPAR SHEAR TIE RBL 33.99, (NR 041074, SEQ 874). REMOVED AND REPLACED SHEAR TIE AT CENTER TANK STA. 1000 FRONT SPAR RBL 33.99, IAW SRM 51-40-02 AND SB 747-53A2904.

Part: BUSS PROTECTION — FAULTY (ZONE 100) · airframe 98,376 hrs · 18,668 cycles

AFTER TAKE-OFF FROM NRT, INDICATION, AC BUS 1 FAIL, RETURNED TO NRT, MAINTENANCE PERFORMED PER FIM 24-23 TASK 812, REMOVED AND REPLACED BCU, TESTED EPGS (GCU1) AND EPGS 2 (GCU2) GROUND TEST COMPLIED WITH, TEST PASSED.

Part: SHEAR TIE — CRACKED (ZONE 100) · airframe 94,698 hrs · 15,226 cycles

DURING HEAVY CHECK, CRACK FOUND ON THE CENTER TANK STA 1000 FRONT SPAR SHEAR TIE LBL 11.33, (NR 041072, SEQ 872). REMOVED AND REPLACED SHEAR TIE AT CENTER TANK STA. 1000 FRONT SPAR LBL 11.33, IAW B747-400 SRM 51-40-02 AND REQUIREMENTS SERVICE BULLETIN 747-53A2904, DATED 06, 2020, THIS CORRECTIVE ACTION CLOSES SDR.

Part: SHEAR TIE — CRACKED (ZONE 100) · airframe 94,698 hrs · 15,226 cycles

DURING HEAVY CHECK, CRACK FOUND ON THE CENTER TANK STA 1000 FRONT SPAR SHEAR TIE RBL 75.92, REMOVED AND REPLACED SHEAR TIE CENTER TANK STA. 1000 FROM SPAR RBL 75.92, IAW SRM 51-40-02, AND SB 747-53A2904.

Part: DOUBLER — CORRODED (ZONE 500) · airframe 94,698 hrs · 15,226 cycles

LH WING REAR SPAR NO. 2 MAIN TANK STRUCTURE JUMPER POINT FUEL BOOST PUMP HAS EVIDENCE OF CORROSION. REMOVED AND REPLACED DOUBLER ON LT WING, REAR, SOAR #2 MAIN TANK STRUCTURE FUEL BOOST PUMP IAW SRM 51-40-02,

Part: DOUBLER — CORRODED (ZONE 500) · airframe 94,698 hrs · 15,226 cycles

LH WING REAR SPAR NO. 2 MAIN TANK STRUCTURE JUMPER POINT AROUND FORWARD OVERRIDE/JETTISON PUMP HAS EVIDENCE OF CORROSION. REMOVED AND REPLACED DOUBLER AT LT WING REAR SPAR NR 2 MAIN TANK STRUCTURE OVERRIDE / JETTISON PUMP PER SRM 51-40-02.

Part: SKIN — CORRODED (ZONE 600 TE) · airframe 94,698 hrs · 15,226 cycles

RIGHT HAND WING UPPER SURFACE TRAILING EDGE SIDE WAS FOUND WITH CORROSION FROM STA ERSS 1646.716 TO WBL 1247, DURING HEAVY CHECK, PER WO 15698, NRC 940659, SEQ 459, PERFORMED BLEND AREA RH WING UPPER SURFACE T/E SIDE FROM STA ERSS 1646.716 TO WBC 1241 (1687 - 1694) IAW B747-400 SRM 51-10-02, SRM 57-20-01, BOEING WGN-WGN 26-0023-068 AND RDR WGN-WGN-26-0023-09B, ISSUED WGA REP-44-258-189

Part: PUMP — CORRODED (ZONE 100) · corrosion level 2 · airframe 94,698 hrs · 15,226 cycles

FUEL OVERRIDE JETTISON PUMP CENTER TANK-RIGHT M225 BEHIND OF THE BONDING JUMPER WAS FOUND CORROSION OF STRUCTURE. REPAIRED AREA AT FUEL OVERRIDE JETTISON PUMP CENTER TANK RIGHT M225, IAW B747-400 SRM 51-10-02, SRM 57-10-10, SOPM 20-10-03, WGN-WGN-26-0022-03B, D926U120-01, REV C, SRM 51-20-01 AND BMS-10-20, AMM 28-31-01,

Part: SKIN — CRACKED (ZONE 100) · airframe 126,315 hrs · 20,880 cycles

WHILE PERFORMING WO 15947, SSID TASK, 4A-5318203-01-WG, INSPECTION FUSELAGE SKIN LONGITUDINAL LAP SPLICES, FOUND 3/4" CRACK STATION 2300, S-46L. PERFORMED LAP SPLICE OVERLAPPING SKIN EXTERNAL REPAIR I/A/W SRM 53-00-01-2R-10, ASSIGNED REP-44-452-159.

Part: CIRCUIT CARD — DIRTY (ZONE 200) · airframe 96,878 hrs · 18,428 cycles

CONTINOUS MASTER WARNING FIRE MAIN DECK FWD INFLIGHT, TROUBLESHOT PER FIM 26-16, TASK 864, CLEAN CIRCUIT CARD PER AMM 26-10-01, FIRE SYSTEM TEST, AMM 26-11-00, PASS NO FAULTS.

Part: HINGE — CORRODED (ZONE 500 FLAP) · airframe 83,715 hrs · 17,565 cycles

LEFT WING, TRAILING EDGE, OUTBOARD FLAP HINGE FITTING HAS EVIDENCE OF CORROSION NEAR REAR SPAR SIDE BRACE FITTING.

Part: SPAR — CORRODED (ZONE 300) · airframe 82,975 hrs · 14,974 cycles

DURING HEAVY MAINTENANCE AREA INSIDE THE LH HORIZONTAL STAB HAS (1) SPOT OF POSSIBLE CORROSION ON THE SPAR WEB LOWER MID SECTION @ APPROXIMATELY (XE-217.500) JUST BELOW THE FASTENER ROWS. AFTER FURTHER EVALUATION OF AREA AT INSIDE THE LH HORIZONTAL STABILIZER SPAR WEB LOWER MID-SECTION AT APPROX. XE 217.500, JUST BELOW FASTENER ROW, FOUND NO EVIDENCE OF CORROSION AT THIS TIME IAW MD-11 SRM 51-21-01. THE AIRCRAFT WAS APPROVED FOR RETURN TO SERVICE.

Part: SPAR — CORRODED (ZONE 500) · airframe 82,975 hrs · 14,974 cycles

DURING HEAVY CHECK, LT WING UPPER FWD SPAR HAS CORROSION APPROX XOR372 ON FWD LEG.

Part: PUMP — CORRODED (ZONE 100) · corrosion level 2 · airframe 83,500 hrs · 17,029 cycles

DURING HEAVY MAINTENANCE CHECK EVIDENCE OF CORROSION AROUND RIGHT CENTER TANK JETTISON PUMP. WORK ACCOMPLISHED IAW AGREEMENT NR WGN-RE-2500580. THE AIRCRAFT WAS APPROVED FOR RETURN TO SERVICE.

Part: SPAR — CORRODED (ZONE 600) · airframe 82,975 hrs · 14,974 cycles

DURING HEAVY MAINTENANCE, RT OUTER WING LOWER REAR SPAR HAS CORROSION AT APPROX XORS-552.

Part: MANIFOLD — CRACKED (SCAV PUMP) · airframe 96,581 hrs · 18,378 cycles

ENGINE #3 OIL QUANTITY WENT TO ZERO IN CRUISE FOLLOWED QRH FOR ENGINE 3 OIL PRESSURE. ENGINE SHUT DOWN PER QRH. REMOVED AND REPLACED LUBE SCAVENGE PUMP DISCHARGE MANIFOLD PER AMM 79-32-01. LEAK CHECKS GOOD.

Part: SPAR — CORRODED (ZONE 600) · airframe 82,975 hrs · 14,974 cycles

DURING HEAVY MAINTENANCE, RT OUTER WING LOWER REAR SPAR HAS CORROSION AT APPROX XORS-581. AFTER FURTHER EVALUATION BOEING CERTIFIED THE BLENDED LOCATION AS A PERMANENT REPAIR AND BEEN ACCOMPLISHED WITH ALL THE REQUESTED PROVISIONS AT RH OUTER WING LOWER REAR SPAR AT APPROX. XORS-581. THE AIRCRAFT WAS APPROVED FOR RETURN TO SERVICE.

Part: SPAR — CORRODED (ZONE 500) · airframe 82,975 hrs · 14,974 cycles

DURING HEAVY MAINTENANCE LT OUTER WING UPPER REAR SPAR HAS CORROSION @ APPROX (XORS-702). FTER FURTHER EVALUATION BOEING CERTIFIED THE BLENDED AREA AS A PERMANENT REPAIR AND BEEN COMPLETED WITH ALL THE REQUESTED PROVISIONS AT LH OUTER WING UPPER REAR SPAR AT APPROX AT XORS-702 IAW MD-11 BOEING MESSAGE: WGN-WGN-25-0035-01C-03C. THE AIRCRAFT WAS APPROVED FOR RETURN TO SERVICE.

Part: SPAR — CORRODED (ZONE 500) · airframe 82,975 hrs · 14,974 cycles

DURING HEAVY MAINTENANCE LH OUTER WING UPPER REAR SPAR HAS CORROSION @ APPROX (XORS-694). AFTER FURTHER EVALUATION BOEING CERTIFIED THE BLENDED AREAS AS A PERMANENT REPAIR AND BEEN ACCOMPLISHED WITH ALL THE REQUESTED PROVISIONS AT LH OUTER WING UPPER REAR SPAR AT APPROX XORS-694 IAW MD-11 BOEING MESSAGE: WGN-WGN-25-0035-01C-03C. THE AIRCRAFT WAS APPROVED FOR RETURN TO SERVICE.

Part: SPAR — CORRODED (ZONE 600) · airframe 82,975 hrs · 14,974 cycles

DURING HEAVY CHECK RH OUTER WING LOWER REAR SPAR HAS CORROSION @ APPROX (XORS-536).

Part: SPAR — CORRODED (ZONE 600) · airframe 82,975 hrs · 14,974 cycles

DURING HEAVY CHECK RH OUTER WING LOWER REAR SPAR HAS CORROSION @ APPROX (XORS-574).

Part: SPAR — CORRODED (ZONE 600) · airframe 82,975 hrs · 14,974 cycles

DURING HEAVY CHECK RH OUTER WING LOWER REAR SPAR HAS CORROSION AT APPROX (XORS-581.

Part: SPAR — CORRODED (ZONE 600) · corrosion level 2 · airframe 82,975 hrs · 14,974 cycles

DURING HEAVY MAINTENANCE CHECK RH OUTER WING LOWER REAR SPAR HAS CORROSION @ APPROX. (XORS-597). AFTER FURTHER EVALUATION, BOEING CERTIFIED THE BLENDED LOCATION AS A PERMANENT REPAIR AND BEEN ACCOMPLISHED WITH ALL THE REQUESTED PROVISIONS, AT RH OUTER WING LOWER REAR SPAR AT APPROX. XORS-597. THE AIRCRAFT WAS APPROVED FOR RETURN TO SERVICE.

Part: SPAR — CORRODED (ZONE 600) · airframe 82,975 hrs · 14,974 cycles

DURING HEAVY CHECK RH OUTER WING LOWER REAR SPAR HAS CORROSION AT APPROX XORS-601. AFTER FURTHER EVALUATION, BOEING CERTIFIED THE BLENDED LOCATION AS A PERMANENT REPAIR AND BEEN ACCOMPLISHED WITH ALL THE REQUESTED PROVISIONS AT RH OUTER WING LOWER REAR SPAR AT APPROX. XORS-601. THE AIRCRAFT WAS APPROVED FOR RETURN TO SERVICE.

Part: SPAR — CORRODED (ZONE 600) · airframe 82,975 hrs · 14,974 cycles

DURING HEAVY MAINTENANCE CHECK RH OUTER WING UPPER REAR SPAR HAS CORROSION @ APPROX. (XORS-608). AFTER FURTHER EVALUATION, BOEING CERTIFIED THE BLENDED LOCATION AS A PERMANENT REPAIR AND BEEN ACCOMPLISHED WITH ALL THE REQUESTED PROVISIONS AT RH OUTER WING UPPER REAR SPAR AT APPROX. XORS-608. THE AIRCRAFT WAS APPROVED FOR RETURN TO SERVICE.

Part: SPAR — CORRODED (ZONE 600) · airframe 82,975 hrs · 14,974 cycles

DURING HEAVY MAINTENANCE CHECK RH OUTER WING LOWER REAR SPAR HAS CORROSION @ APPROX. (XORS-799). AFTER FURTHER EVALUATION, BOEING CERTIFIED THE BLENDED LOCATION AS A PERMANENT REPAIR AND BEEN ACCOMPLISHED WITH ALL THE REQUESTED PROVISIONS, AT RH OUTER WING LOWER REAR SPAR AT APPROX. XORS-799. THE AIRCRAFT WAS APPROVED FOR RETURN TO SERVICE

Part: SPAR — CORRODED (ZONE 500) · airframe 82,975 hrs · 14,974 cycles

LEFT OUTER WING UPPER REAR SPAR HAS CORROSION @ APPROX. (XORS-702). AFTER FURTHER EVALUATION, BOEING CERTIFIED THE BLENDED OUT AREA AS A PERMANNET REPAIR AND BEEN COMPLETED WITH ALL THE REQUESTED PROVISIONS AT LH OUTER WING UPPER REAR SPAR AT APPROX AT XORS-702 IAW MD-11, BOEING MESSAGE: WGN-WGN-25-003501C/-03C. THE AIRCRAFT WAS APPROVED FOR RETURN TO SERVICE.

Part: SPAR — CORRODED (ZONE 500) · airframe 82,975 hrs · 14,974 cycles

DURING HEAVY MAINTENANCE LH OUTER WING UPPER REAR SPAR HAS CORROSION @ APPROX (XORS-694). AFTER FURTHER EVALUATION BOEING CERTIFIED THE BLENDED AREA AS A PERMANENT REPAIR AND BEEN ACCOMPLISHED WITH ALL THE REQUESTED PROVISIONS AT LH OUTER WING UPPER REAR SPAR AT APPROX XORS-694 IAW MD-11 BOEING MESSAGE: WGN-WGN-25-0035-01C/03C. THE AIRCRAFT WA APPROVED FOR RETURN TO SERVICE.

Part: SPAR — CORRODED (ZONE 600) · airframe 82,975 hrs · 14,974 cycles

DURING HEAVY MAINTENANCE, RT OUTER WING LOWER REAR SPAR HAS CORROSION AT APPROX XORS-536.

Part: SPAR — CORRODED (ZONE 600) · airframe 82,975 hrs · 14,974 cycles

DURING HEAVY MAINTENANCE RT OUTER WING LOWER REAR SPAR HAS CORROSION AT APPROX XORS-574. AFTER FURTHER EVALUATION BOEING CERTIFIED THE BLENDED LOCATION AS A PERMANENT REPAIR AND BEEN ACCOMPLISHED WITH ALL THE REQUESTED PROVISIONS AT RH OUTER WING LOWER REAR SPAR AT APPROX, XORS-574. THE AIRCRAFT WAS APPROVED FOR RETURN TO SERVICE.

Part: SPAR — CORRODED (ZONE 600) · airframe 82,975 hrs · 14,974 cycles

DURING HEAVY MAINTENANCE, RT OUTER WING LOWER REAR SPAR HAS CORROSION AT APPROX XORS-597. AFTER FURTHER EVALUATION BOEING CERTIFIED THE BLENDED LOCATION AS A PERMANENT REPAIR AND BEEN ACCOMPLISHED WITH ALL THE REQUESTED PROVISIONS AT RT OUTER WING LOWER REAR SPAR AT APPROX. XORS-597. THE AIRCRAFT WAS APPROVED FOR RETURN TO SERVICE.

Part: SPAR — CORRODED (ZONE 600) · airframe 82,975 hrs · 14,974 cycles

DURING HEAVY CHECK RT OUTER WING LOWER REAR SPAR HAS CORROSION AT APPROX XORS-601. AFTER FURTHER EVALUATION BOEING CERTIFIED THE BLENDED LOCATION AS A PERMANANET REPAIR AND BEEN ACCOMPLISHED WITH ALL THE REQUESTED PROVISIONS AT RH OUTER WING LOWER REAR SPAR AT APPROX. XORS-601. THE AIRCRAFT WAS APPROVED FOR RETURN TO SERVICE.

Part: SPAR — CORRODED (ZONE 600) · airframe 82,975 hrs · 14,974 cycles

DURING HEAVY CHECK RT OUTER WING UPPER REAR SPAR HAS CORROSION AT APPROX XORS-608. AFTER FURTHER EVALUATION BOEING CERTIFIED THE BLENDED LOCATION AS A PERMANENT REPAIR AND BEEN ACCOMPLISHED WITH ALL THE REQUESTED PROVISIONS AT RH OUTER WING UPPER REAR SPAR AT APPROX XORS-608. THE AIRCRAFT WAS APPROVED FOR RETURN TO SERVICE.

Part: SPAR — CORRODED (ZONE 600) · airframe 82,975 hrs · 14,974 cycles

DURING HEAVY MAINTENANCE RH OUTER WING LOWER REAR SPAR HAS CORROSION @ APPROX (XORS-799). AFTER FURTHER EVALUATION BOEING CERTIFIED THE BLENDED LOCATION AS A PERMANENT REPAIR AND BEEN ACCOMPLISHED WITH ALL THE REQUESTED PROVISIONS AT RH OUTER WING LOWER REAR SPAR AT APPROX. XORS-799. THE AIRCRAFT WAS APPROVED FOR RETURN TO SERVICE.

Part: SPAR — CORRODED (ZONE 600) · corrosion level 2 · airframe 82,975 hrs · 14,974 cycles

RIGHT OUTER WING LOWER REAR SPAR HAS CORROSION AT APPROX. XORS-574. AFTER FURTHER EVALUATION BOEING CERTIFIED THE BLENDED LOCATION AS A PERMANENT REPAIR AND BEEN ACCOMPLISHED WITH ALL THE REQUESTED PROVISIONS AT RT OUTER WING LOWER REAR SPAR AT APPROX. XORS-574. THE AIRCRAFT WAS APPROVED FOR RETURN TO SERVICE.

Part: SPAR — CORRODED (ZONE 600) · corrosion level 2 · airframe 82,975 hrs · 14,974 cycles

DURING HEAVY MAINTENANCE CHECK RT OUTER WING LOWER REAR SPAR HAS CORROSION AT APPROX XORS-581. AFTER FURTHER EVALUATION, BOEING CERTIFIED THE BLENDED LOCATION AS A PERMANENT REPAIR & BEEN ACCOMPLISHED WITH ALL THE REQUESTED PROVISIONS, AT RT OUTER WING LOWER REAR SPAR AT APPROX. XORS-581. THE AIRCRAFT WAS APPROVED FOR RETURN TO SERVICE.

Part: PANEL — CORRODED (ZONE 200) · airframe 82,975 hrs · 14,974 cycles

DDURING HEAVY MAINTENANCE CHECK CENTER SECTION UPPER PANEL CORRODED AT RH APPROX STA 1204, XCW 24.5 S-18. AFTER FURTHER EVALUATION BOEING CERTIFIED THE BLENDED OUT AREA AS A PERMANENT REPAIR AND BEEN COMPLETED WITH ALL THE REQUESTED PROVISIONS AT RH APPROX. STA 1204, XCW 24.5 S-18 ON CENTER WING UPPER PANEL IAW MESSAGE: WGN-25-0035-04C. THE AIRCRAFT WAS APPROVED FOR RETURN TO SERVICE.

Part: PANEL — CORRODED (ZONE 200) · airframe 82,975 hrs · 14,974 cycles

DURING HEAVY MAINTENANCE CHECK CENTER SECTION UPPER PANEL CORRODED AT RT APPROX. STA. 1219, XCW 16.0 S-16. AFTER FURTHER EVALUATION BOEING CERTIFIED THE BLENDED OUT AREA AS A PERMANENT REPAIR AND BEEN COMPLETED WITH ALL THE REQUESTED PROVISIONS AT CENTER WING UPPER PANEL RH APPROX. STA 1219, XCW 16.0S-16 IAW MESSAGE WGN-25-0035-04C. THE AIRCRAFT WAS APPROVED FOR RETURN TO SERVICE.

Part: PANEL — CORRODED (ZONE 200) · airframe 82,975 hrs · 14,974 cycles

DURING HEAVY MAINTNENANCE CENTER UPPER PANEL CORRODED AT RH APPROX STA 1204, XCW 24.5 S-18. AFTER FURTHER EVALUATION BOEING CERTIFIED THE BLENDED OUT AREA AS A PERMANENT REPAIR AND BEEN COMPLETED WITH ALL THE REQUESTED PROVISIONS AT RH APPROX. STA 1204, XCW 24.5, S-18 ON CENTER UPPER PANEL IAW MD-11 BOEING MESSAGE: WGN-WGN-25-0035-04C. THE AIRCRAFT WAS APPROVED FOR RETURN TO SERVICE.

Part: PANEL — CORRODED (ZONE 200) · airframe 82,975 hrs · 14,974 cycles

CENTER WING UPPER PANELCORRODED AT RH APPROX STA 1219, XCW 16.0, S-16. AFTER FURTHER EVALUATION, BOEING CERTIFIED THE BLENDED OUT AREA AS A PERMANENT REPAIR AND BEEN COMPLETED WITH ALL THE REQUESTED PROVISIONS AT CENTER WING UPPER PANEL RH APPROX STA 1219, XCW 16.0, S-16 IAW MD-11, BOEING MESSAGE: WGN-WGN-25-0035-04C. THE AIRCRAFT WAS APPROVED FOR RETURN TO SERVICE.

Part: PANEL — CORRODED (ZONE 200) · airframe 82,975 hrs · 14,974 cycles

DURING HEAVY MAINTENENACE CHECK CENTER WING UPPER PANEL CORRDODED AT LH APPROX STA 1205, XCW 7.0 S-18. AFTER FURTHER EVALUATION OF BLENDED OUT AREA AT LH APPROX STA 1205, XCW 7.0AT S-18, BOEING FOUND BLENDED OUT LOCATION ACCEPTABLE AS A PERMANENT REPAIR IAW MD-11, MESSAGE: WGN-WGN-25-0035-4C. THE AIRCRAFT WAS APPROVED FOR RETURN TO SERVICE.

Part: PANEL — CORRODED (ZONE 200) · airframe 82,975 hrs · 14,974 cycles

DURING HEAVY MAINTENANCE CHECK CENTER WING UPPER PANEL CORRODED AT RH APPROX STA 1233, XCW 76.5 AT S-14. AFTER FURTHER EVALUATION OF BLENDED OUT AREA AT RH APPROX STA 1233, XCW 76.5 AT S-14, BOEING FOUND BLENDED OUT LOCATION ACCEPTABLE AS A PERMANENT REPAIR IAW MD-11, MESSAGE: WGN-WGN-25-0035-4C. THE AIRCRAFT WAS APPROVED FOR RETURN TO SERVICE.

Part: PANEL — CORRODED (ZONE 200) · airframe 82,975 hrs · 14,974 cycles

DURING HEAVY MAINTENANCE CHECK CENTER WING UPPER PANEL CORRODED AT RH APPROX STA 1229, XCW 96.0 AT S-15. AFTER FURTHER EVALUATION BOEING CERTIFIED THE BLENDED OUT AREA AS A PERMANENT REPAIR AND BEEN COMPLETED WITH ALL THE REQUESTED PROVISIONS AT RH CENTER WING UPPER PANEL APPROX STA 1229, XCW 96.0 AT S-15 IAW MD-11, BOEING MESSAGE: WGN- WGN-25-0035-04C. THE AIRCRAFT WAS APPROVED FOR RETURN TO SERVICE.

Part: PANEL — CORRODED (ZONE 200) · airframe 82,975 hrs · 14,974 cycles

CENTER UPPER PANEL CORRODED AT LH APPROX STA 1205, XCW 7.0 S-18. AFTER FURTHER EVALUATION OF BLENDED OUT AREA AT LH APPROX STA 1205, XCW 7.0 AT S-18, BOEING FOUND BLENDED OUT LOCATION ACCEPTABLE AS A PERMANENT REPAIR IAW MD-11, MESSAGE: WGN-WGN-25-0035-4C. THE AIRCRAFT WAS APPROVED FOR RETURN TO SERVICE.

Part: PANEL — CORRODED (ZONE 200) · airframe 82,975 hrs · 14,974 cycles

DURING HEAVY MAINTENANCE CENTER UPPER PANEL CORRODED AT RH APPROX STA 1233, XCW 76.5 AT S-14. AFTER FURTHER EVALUATION OF BLENDED OUT AREA AT RH APPROX STA 1233, XCW 76.5 AT S-14, BOEING FOUND BLENDED OUT LOCATION ACCEPTABLE AS A PERMANENT REPAIR IAW MD-11, MESSAGE: WGN-WGN-25-0035-4C. THE AIRCRAFT WAS APPROVED FOR RETURN TO SERVICE.

Part: PANEL — CORRODED (ZONE 200) · airframe 82,975 hrs · 14,974 cycles

CENTER WING UPPER PANEL CORRODED AT RH APPROX STA 1229, XCW 96.0 AT S-15. AFTER FURTHER EVALUATION BOEING CERTIFIED THE BLENDED OUT AREA AS A PERMANENT AND BEEN COMPLETED WITH ALL THE REQUESTED PROVISIONS AT RH CENTER WING UPPER PANEL APPROX STA 1229, XCW 96.0 AT S-15 IAW MD-11, BOEING MESSAGE: WGN-WGN-25-0035-04C. THE AIRCRAFT WAS APPROVED FOR RETURN TO SERVICE.

Part: PANEL — CORRODED (ZONE 200) · airframe 82,975 hrs · 14,974 cycles

DURING HEAVY CHECK CENTER WING UPPER PANEL CORRODED AT RH APPROX STA. 1226 XCW 80.5 AT S-15. AFTER FURTHER EVALUATION BOING CERTIFIED THE BLENDED OUT AREA AS A PERMANENT REPAIR AND BEEN COMPLETED WITH ALL THE REQUESTED PROVISIONS AT R/H CENTER WING UPPER PANEL APPROX. STA 1226, XCW 80.5AT S-15 IAW MD-11, BOEING MESSAGE: WGN-WGN-35-0035-04C. THE AIRCRAFT WAS APPROVED FOR RETURN TO SERVICE.