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 BS845 - BS887 S-10R TO S-14R. MARKED. / [01] PERFORMED CLAD PENETRATION TEST IN SEVERAL LOCATIONS ON SKIN PANEL BS 845 TO 887 S-10R TO S-14R LISTED BELOW PER SRM51-10-07-0G-0 PARA. 5D-E<BR><BR>1) BS 867+13' 1.5' BELOW STR 13R<BR>2) BS 807+13' 1.5' BELOW STR 13R<BR>3) BS 827+15' 2' ABOVE STR 13R<BR>NO SIGNS OF PENETRATION THROUGH THE CLAD;[02] VERIFIED CORRECTIVE ACTION ITEM 1;[03] EVALUATED FUSELAGE SKIN ANOMALIES AT BS 845 STR 13R D=.001'; BS 847+2' 2.5' BELOW STR 13R D=.001'; BS 847+14.5' 3.7' BELOW STR 13R D=.002'; BS 867 2.3' ABOVE STR 13R D=.0015'; BS 867+25' 2.8' BELOW STR 13R D=.0005'; BS 867+12.5 1.5' BELOW STR 13R D=.0007'; BS867+19.5' 4.5' BELOW STR 13R D=.0005';BS 867+18' 1'ABOVE STR 13R D=.0006';BS 887 8' ABOVE STR 13R D=.002'; BS 887 2.3' BELOW STR 11R D=.0035'; BS 847+16.5' 6.5' ABOVE STR 11R D=.002'; BS 847+11' 6'ABOVE STR 11R D=.0015'. IAW SRM 53-00-01-1A-1;[04] REMOVED ANOMALIES AT BS 847+2' 2.5' BELOW STR 13R IN A .8X.8 AREA ;BS 847+14.5' 3.7' BELOW STR 13R IN A .5X.5 AREA; BS 887 2.3'BELOW STR 11R IN A .7X.7 AREA DID NOT NOT PENETRATE THROUGH CLAD FOUND TO BE ON LIMITS PER SRM 53-00-01-1A-1 ;PERFORMED CLAD PENETRATION TEST AT BLENDED AREAS ON SKIN PANEL BS 845 TO 887 S-10R TO S-14R PER SRM 51-10-07-0G-0 PARA. 5D-E NO SIGNS OF PENETRATION THROUGH THE CLAD;[05] VERIFIED CORRECTIVE ACTIONS 3 AND 4;[06] SKIN PANEL TO BE REPLACED ON FAULT TTG8Q00CRFNF;[07] VERIFIED CORRECTIVE ACTION 6

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