Service difficulty report · Web · Boeing 7378H4

Difficulty date
September 25, 2023
Submitted
October 20, 2023
Operation
Air carrier
Aircraft
N8674B
Make and model
Boeing 7378H4
Aircraft serial
36734
Aircraft time
26,522 hours, 12,730 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 STA 776-849 RBL 27 THRESHOLD WEB HAS CORROSION.<[01] REMOVED CORROSION FOUND TO BE OUT OF LIMITS PER SRM 53-60-15-1A-1;[02] REMOVED WEB PER SRM 51-40-02;[03] LOCATED AND DRILLED HOLES FOR WEB PER SRM 51-40-05;[04] C/W INSP. LOCATED AND DRILLED HOLES FOR WEB PER SRM 51-40-05;[05] COUNTERSANK FOR NUTPLATES PER SRM 51-40-08 INSTALLED NUTPLATES TO WEB PER SRM 51-40-02;[06] C/W INSPECTION C/A 5. COUNTERSANK FOR NUTPLATES PER SRM 51-40-08 INSTALLED NUTPLATES TO WEB PER SRM 51-;[07] DEBURR AND APPLIED ALODINE PER SRM 51-20-01.APPLLIED PRIMER TO CUT EDGES PER SOPM 20-51-02;[08] COUNTER SANK FASTENER HOLES PER SRM 51-40-08 SEE ALSO STEP 1;[09] APPLLIED PRIMER TO CUT EDGES PER SOPM 20-41-02 FOR STEP 7 C /A;[10] C/W INSPECTION OF DEBURR; ALODINE APPLICATION AND PRIMER APPLICATION PER SRM 51-20-01 & 51-40-08 AND SOPM 20-41-02 REF C/A LINE 7; 8 & 9;[11] OK TO INSTALL WEB;[12] OK TO INSTALL WEB;[13] INSTALLED WEB PER SRM 51-40-02.;[14] INSTALLED WEB PER SRM 51-40-02.;[15] INSTALLED WEB PER SRM 51-40-02.

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