Service difficulty report · Support · Boeing 7377H4

Difficulty date
May 30, 2023
Submitted
July 3, 2023
Operation
Air carrier
Aircraft
N960WN
Make and model
Boeing 7377H4
Aircraft serial
36675
Aircraft time
38,108 hours, 23,248 cycles
Part
Support
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 COMPARTMENT LEFT FLOOR TO SIDEWALL SUPPORT HAS CORROSION AT STA: 727+6; 727E+6;747; 747+2; 747+10; 747+14; 767; 767+3; 767+4.5; 787. WL 156: LBL 20 TO 24<[01] REMOVED CORROSION ABOUT 1' X 1' AT <BR>STA 727+6 0.005'(OUT OF LIMIT)<BR>STA 727E+6 0.002'<BR>STA 747 0.003'<BR>STA 747+2 0.003'<BR>STA 747+10 0.006'(OUT OF LIMIT)<BR>STA 747+14 0.003'<BR>STA 767 0.003'<BR>STA 767+3 0.006'(OUT OF LIMIT)<BR>STA 767+4.5 0.002'<BR>STA 787 0.005'(OUT OF LIMIT)<BR>IAW SRM 51-10-02-0G-0;06] LOCATED AND DRILLED; COUNTERSANK REPLACEMENT ACB L/H FLOOR TO SIDEWALL SUPPORT IAW SRM 51-40-05; SRM 51-40-06; SRM51-40-08; DWG 146A7502 ID0027 REV-.;[07] LOCATED AND DRILLED NEW SPLICE AT STA 727E+10 IAW SRM 53-00-53-2R-6;[08] APPLIED CHEMICAL CONVERSION COATING AND PRIMER IAW SRM 51-20-01-0G-0 AND SOPM 20-41-02<BR><BR>OK TO INSTALL NEW SPLICE TO NEW FLOOR TO SIDEWALL SUPPORT;[10] INSTALLED NEW SPLICE AT FLOOR TO SIDEWALL SUPPORT IAW SRM 53-00-53-2R-6;[18] INSTALLED NEW AFT CARGO COMPARTMETNT LEFT FLOOR TO SIDEWALL SUPPORT IAW SRM 51-40-02-0G-0 AND DWG 146A7500 ID:0073 REV:-;[19] VERIFIED CORRECTIVE ACTION STEP 18.;[20] VERIFIED MEASUREMENT TABLE AND TASK CARD COMPLETE.

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