Service difficulty report · Skin · Boeing 7378H4

Difficulty date
June 18, 2022
Submitted
September 22, 2022
Operation
Air carrier
Aircraft
N8656B
Make and model
Boeing 7378H4
Aircraft serial
42530
Aircraft time
24,599 hours, 11,090 cycles
Part
Skin
Condition
Defective
Location
Fuselage
Stage of operation
IN
How discovered
9
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

ANOMALY ON EXTERNAL FUSELAGE SKIN BS858 - BS887 S-4R - S-10R. MARKED. / [01] PERFORMED CLAD PENETRATION TEST IN SEVERAL LOCATIONS ON SKIN PANEL BS 858 TO 887 S-4R TO S-10R LISTED BELOW PER SRM51-10-07-0G-0 PARA. 5D-E<BR><BR>1) BS 867+5.5' 3.5' BELOW STR 9R<BR>2) BS 867+12.5' 2.5' BELOW STR 7R<BR>3) BS 867+13.5' 4.5' ABOVE STR 6R<BR>NO SIGNS OF PENETRATION THROUGH THE CLAD;[02] VERIFIED CORRECTIVE ACTION ITEM 1;[03] EVALUATED FUSELAGE SKIN ANOMALIES AT <BR><BR>BS 847+13'; 6.5' BELOW STR 9R; D=0.001'<BR>BS 867+14.5'; 2' BELOW STR 9R; D=0.001'<BR>BS 858+4'; 3.7' ABOVE STR 9R; D=0.001'<BR>BS 867+5.3'; 2' ABOVE STR 9R; D=0.0015'<BR>BS 867+13'; 3'BELOW STR 8R; D=0.0008'<BR>BS 887; 3' ABOVE STR 9R; D=0.002'<BR>BS 867+4.5'; 4.5' ABOVE STR 8R; D=0.008'<BR>BS 867+14.5'; 4.3' ABOVE STR 8R; D=0.001'<BR>BS 867+0.5'; 4.5' ABOVE STR 7R; D=0.0005'<BR>BS 867+17'; 3' ABOVE STR 7R; D=0.0007'<BR>BS 867+19'; 2' BELOW STR 5R; D=0.001'<BR>BS 867+19'; 4 ABOVE STR 5R; D=0.001'<BR><BR>IAW SRM 53-00-01-1A-1;[04] REMOVED ANOMALY AT BS 887; 3' ABOVE STR 9R; DID NOT PENETRATE THROUGH CLAD FOUND TO BE INLIMITS PER SRM 53-00-01-1A-1 ;PERFORMED CLAD PENETRATION TEST AT BLENDED AREA ON SKIN PANEL BS 858 TO 887 S-4R TO S-10R LISTED BELOW PER SRM51-10-07-0G-0 PARA. 5D-E;NO SIGNS OF PENETRATION THROUGH CLAD;[05] CORRECTION TO STEP 4 WORDS LISTED BELOW ARE NOT REQUIRED;[06] VERIFIED CORRECTIVE ACTIONS3-5;[07] SKIN PANEL TO BE REPLACED ON FAULT TTG8Q00CRFB6;[08] VERIFIED CORRECTIVE ACTION 7

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