Service difficulty report · Web · Boeing 7378H4

Difficulty date
October 4, 2023
Submitted
November 3, 2023
Operation
Air carrier
Aircraft
N8552Z
Make and model
Boeing 7378H4
Aircraft serial
63580
Aircraft time
19,555 hours, 9,780 cycles
Part
Web
Part number
UNKNOWN
Condition
Corroded
Location
Zn 100 Fus Lower
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

AFT CARGO THRESHOLD WEB HAS CORROSION STA 787-847<[01] REMOVED CORROSION AND FOUND WEB TO BE OUT OF LIMITS PER SRM 53-60-15-1A-1.;[02] REMOVED WEB FROM AIRCRAFT FOR REPLACEMENT; PER SRM 51-40-02.;[03] INSPECTION VERIFIED.<BR>1. RICHARD PARRY (TECHNICIAN); 20-OCT-2023 00:31 UTC<BR>REMOVED CORROSION AND FOUND WEB TO BE OUT OF LIMITS PER SRM 53-60-15-1A-1.<BR>2. RICHARD PARRY (TECHNICIAN); 20-OCT-2023 00:32 UTC<BR>REMOVED WEB FROM AIRCRAFT FOR REPLACEMENT; PER SRM 51-40-02.;[04] LOWER MAIN SILL WEB PN# 146A8123U25 STRUCTURE ID PER SRM 53-60-15-0I-1 IS CLASSIFIED PSE STRUCTURE PER SRM 51-00-04-0G-0.;[05] LOCATED AND DRILLED NEW THRESHOLD WEB PER SRM 51-40-05. COUNTERSINK OF HOLES ACCOMPLISHED PER SRM 51-40-08. INSTALLED NUT PLATES ON NEW WEB PER SRM 51-40-02. OK TO INSTALL WEB.;[06] INSPECTED LINE 5. OK TO INSTALL.;[07] INSTALLED NEW WEB TO AIRCRAFT PER SRM 51-40-02.

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