Service difficulty report · Skin · Boeing 777222

Difficulty date
January 6, 2024
Submitted
January 17, 2024
Operation
Air carrier
Aircraft
N781UA
Make and model
Boeing 777222
Aircraft serial
26945
Aircraft time
100,088 hours, 17,774 cycles
Part
Skin
Part number
143W23312
Condition
Cracked
Location
Lh Underwing
Stage of operation
IN
How discovered
O
Nature of condition
O
Precautionary procedure
K

As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.

What was found

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.