Service difficulty report · Skin · Boeing 7378H4

Difficulty date
June 15, 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 S-2L TO S-4L BS887 - BS947+5. MARKED / [01] PERFORMED CLAD PENETRATION TEST IN SEVERAL LOCATIONS ON SKIN PANEL BS 887 TO 1016 S-2L TO S-4L LISTED BELOW PER SRM 51-10-07-0G-0 PARA. 5D-E<BR><BR>1) BS 887-907 S-2L TO S-3L<BR>2) BS 887-907 S-3L TO S-4L<BR>3) BS 907-927 S-2L TO S-3L<BR>4) BS 927-947 S-3L TO S-4L<BR>5) BS 947-967 S-3L TO S-4L<BR>6) BS 967-986 S-3L TO S-4L<BR><BR>CLAD WAS NOT PENETRATED AT THESE LOCATIONS;[02] INSPECTED ACTION 1;[03] EVALUATED ANOMALIES ON FUSELAGE SKIN AT BS 887+10 6'BELOW STR 3L D=.0008'; BS 887+11 4'ABOVE STR 3L D=.0015'; BS 947+9.5 1'ABOVE STR 4L D=.0008'; BS 947+7 2'BELOW STR 3L D=.0015'; BS 947+6 2'ABOVE STR 3L D=.001'; BS 967+9.5 4'BELOW STR 3L D=.0007'; BS 967+17' 3'BELOW STR 3L D=.001' IAW SRM 53-00-01-1A-1;[04] DEPTH MEASUREMENTS MISSING CAL TOOL REQUIREMENTS.;[05] OPTICAL MICROMETER USED ID:IS000637 S/N:9761 DUE:02/2023<BR>DIAL DEPTH GAUGE USED ID:ATS2677 S/N:UNKNOWN DUE:11/2022.<BR>TOOLING USED FOR CORRECTIVE ACTION 3;[06] VERIFIED CORRECTIVE ACTION ITEMS 3 AND 5;[07] SKIN PANEL TO BE REPLACED ON FAULT TTG8Q00CRFNK

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