# SDR CALA2024011700127

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 6, 2024
- Submitted: January 17, 2024
- Operation: Air carrier
- Aircraft: [N781UA](https://openairdocs.org/aircraft/N781UA), registered now
- Make and model: Boeing 777222
- Aircraft serial: 26945
- Aircraft time: 100,088 hours, 17,774 cycles
- System (JASC): [5330 · Fuselage Main, Plate/Skin](https://openairdocs.org/jasc/5330)
- Part: Skin
- Part number: 143W23312
- Condition: Cracked
- Location: Lh Underwing
- Stage of operation: IN
- How discovered: O
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CALA2024011700127

## Discrepancy

SUPPORT TASK - EA 5310-07557 OP 002 - 1EA CRACK FOUND ON LH UNDERWING LONGERON FTG FX SKIN FASTENER HOLE, CRACK RUNNING TO AFT DIRECTION APPROX 0.125" IN DEPTH STARTING FROM I/B EDGE TRANSFER REF NON - ROUTINE WO.2622006 AND ORIG BY V924734 RON DOUBLER INSTALLATION PER THE LATEST REVISION OF ECRA 5330-07 179 PART 2 ON OR BEFORE 15JAN26. REPAIRED PER ECRA 5330-07179 PART 1 INTERIM REPAIR. WORK PERFORM ED HAECO HKG NON - ROUTINE WO.2622006. INSPECT LH UNDERWING LONG OK TO DIP PART 1 INTERM REPAIR LH UNDERWING LONGERON FTG FX SKIN TOMC-APPROVAL FROM SC1ELBYC COMMENT FASTENER HOLE. INSPECT LH UNDERWING LONGERON DOUBLER INSTALLATION PER THE LATEST REV OF ECRA 5330-07179 PART 2 ON OR BEFORE 15-JAN-2026 . PER ECRA 5330-07179.

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