Service difficulty report · Skin · Boeing 777300ER

Difficulty date
April 22, 2022
Submitted
April 27, 2022
Operation
Air carrier
Aircraft
N2749U
Make and model
Boeing 777300ER
Aircraft serial
66589
Aircraft time
9,462 hours, 1,162 cycles
Part
Skin
Part number
ALUMINUMSKIN
Condition
Dented
Location
Sta825str27l
Stage of operation
IN
How discovered
V
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

FOUND DENT WITH GOUGE BETWEEN STA 825 AND 825+21 AT STRINGER 27-L. GOUGE NEEDS TO BE BLENDED PER SRM. REMOVED DAMAGE PER SRM 53-30-01-1A-1 AND SRM 51-10-02.NEED QC TO PERFORMED THICKNESS MEASUREMENT REF. NDT 51-00-10 PROCEDURE 1 DENT MEASURES 1.4"X1.8"X0.064". L/Y=28 AND W/Y=22. PER SRM REF SRM 53-00-01 AD1 TABLE A FIG 102 DENT NEEDS TO BE MIN 0.5" HFEC AND ULTRASOUND TO VERIFY REMAINING THICKNESS AFTER BLEND LOWEST REMAINING MATERIAL THICKNESS FOUND TO BE .069". PERFORMED 53-00-01 AD1 BOTH NEED TO BE 30 OR MORE. AWAY FROM STRINGER. DENT IS ON EDGE OF STR 27L.BLEND OUT IS OUT. EDDY CURRENT SURFACE INSPECTION REF 51-00-01 PROCEDURE 2 WITH NO WITHIN LIMITS PER NOTED SRM. CRACK INDICATIONS. ALL STEPS COMPLIED WITH PART 1 OF EC/RA 5330-06847. NEED TO PERFORM PART 3 PERM REPAIR WITHIN 12 MONTHS OR 500 CYCLES WHICHEVER IS FIRST. DIP APPROVAL, DUE DENT WITH GOUGE BETWEEN STA 825 AND 825+21 AT TOMC-APPROVAL FROM SC1ELBYC COMMENT STRINGER 27-L. , GOUGE WAS BLENDED PER SRM. REMOVED DAMAGE PER SRM 53-30-01-1A-1 AND SRM 51-10-02. DENT MEASURES 1.4"X1.8"X0.064". L/Y=28 AND W/Y=22. PER SRM 53-00-01 AD1 BOTH NEED TO BE 30 OR MORE. ALL STEPS COMPLIED WITH PART 1 OF EC/RA 5330-06847. NEED TO ACP PART 3 PERM REPAIR WITHIN 12 MONTHS OR 500 CYCLES WHICHEVER IS FIRST. QC QC REVIEWED. T/A : 12 MONTHS/500 FC..........AP/U366012 RECORDS UPDATE - AP REWORK ACP PER REF SRM 53-00-01-2R-4 REPAIR 4. SEE NR 000687643 AND ESFR #1028390 FOR DETAILS. AND LP 8445517 FOR CATEGORY B REPAIR SUPPLEMENTAL INSPECTI

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