Service difficulty report · Web · Boeing 7378H4

Difficulty date
November 28, 2021
Submitted
January 11, 2022
Operation
Air carrier
Aircraft
N8621A
Make and model
Boeing 7378H4
Aircraft serial
36917
Aircraft time
27,526 hours, 12,424 cycles
Part
Web
Condition
Corroded
Location
Fuselage
Stage of operation
UK
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

FWD CARGO FLOOR STRUCTURE SCUFF PLATE WEB STA 440-480+12 RBL 28 HAS SURFACE CORROSION. (MARKED) ; / [01] FOUND EXTENSIVE DAMAGE THAT WAS OUT OF LIMITS PER SRM 53-30-15-1A-1. WEB REQUIRES REPLACEMENT WITH NEW PART. REMOVED DAMAGED WEB PER SRM 51-40-02.; [02] LOCATED AND DRILLED NEW AFT CARGO LOWER SILL THRESHOLD WEB PER SRM 51-40-05. P/N 654A003-58; [03] CORRECTIVE ACTION #2 PART NUMBER ENTERED IN ERROR: LOCATED AND DRILLED NEW AFT CARGO LOWER SILL THRESHOLD WEB PER SRM 51-40-05. P/N 654A0003-58; [04] VERIFIED LOCATED AND DRILLED NEW AFT CARGO LOWER SILL THRESHOLD WEB PER SRM 51-40-05. P/N 654A0003-58 FOR STEP 3.; [05] CORRECTIVE ACTION #3 LOCATION ENTERED IN ERROR. CORRECTION: LOCATED AND DRILLED NEW FWD CARGO LOWER SILL THRESHOLD WEB PER SRM 51-40-05.; [06] C/W; [07] REMOVED AND REPLACED FWD CARGO FLOOR STRUCTURE LOWER SILL THRESHOLD WEB P/N 654A0003-58 IAW SRM 51-40-02. SEE CORRECTIVE ACTIONS FOR INDIVIDUAL SIGN OFFS OF ALL WORK PERFORMED.; [08] VERIFIED INSTALLATION OF WEB.

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