Service difficulty report · Skin · Boeing 7378H4

Difficulty date
June 10, 2022
Submitted
September 22, 2022
Operation
Air carrier
Aircraft
N8656B
Make and model
Boeing 7378H4
Aircraft serial
42530
Aircraft time
24,630 hours, 11,108 cycles
Part
Skin
Condition
Corroded
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

SKIN PITTING AND ANOMALIES BS 907 - BS 927 STR 6L - STR 7L / [01] REMOVED SKIN PITTING AND ANOMALIES FROM FUSELAGE SKIN AT BS 907-927; STR 6L-7L IAW SRM 51-10-02-0;[02] VERIFIED CORRECTIVE ACTION ITEM 1.;[03] ACCOMPLISHED UT INSPECTION OF BLENDED AREA LOWEST THICKNESS AT ORIGINAL .048 IS .045. .071 IS .066; .080 IS .074; .090 IS .086; .100 IS .095; .125 IS .124 IAW 737 NDTM PART 4; 51-00-00 PROCEDURE 2 TOOL# ATS842 CAL DUE 01/2023.;[04] EVALUATED DAMAGE IN AREA OF L=19.5'XW=8.5'XD=.048 IS .045. .071 IS .066; .080 IS .074; .090 IS .086; .100 IS .095; .125 IS .124. DAMAGE FOUND TO BE IN LIMITS IAW SRM 53-00-01-1A-1;[05] SRM REFERENCE MISSING LEAD MECHANIC VALIDATION.;[06] VERIFIED APPLICABILITY OF SRM 53-00-01-1A-1;[07] VERIFIED CORRECTIVE ACTION ITEM 4-6; IN LIMITS ALL AREAS; OK TO PROCEED.;[08] SKIN PANEL TO BE REPLACED ON FAULT TTG8Q00CRFNS;[09] VERIFIED CORRECTIVE ACTION 8. VERIFIED MEASUREMENT TABLE

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