Service difficulty report · Support · Boeing 7377H4

Difficulty date
July 4, 2023
Submitted
August 9, 2023
Operation
Air carrier
Aircraft
N965WN
Make and model
Boeing 7377H4
Aircraft serial
36677
Aircraft time
38,362 hours, 23,630 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

FLOOR TO SIDEWALL SUPPORT CORROSION BS 727A+9 - 767 RBL 20 WL 156<[01] UPDATE MEASUREMENTS TABLE;[02] SRM 53-00-53-1A-2 IS APPLICABLE FOR THIS;[03] BLENDED CORROSION ON FLOOR TO SIDEWALL SUPPORT CORROSION BS 727A+9 - 767 RBL 20 WL 156;<BR>WORK AREA <BR>BS 727A+12'; L 1.2' X W 0.700' X D 0.009';<BR>BS 727B+2'; L 1.2' X W 0.800' X D 0.011';<BR>BS 727C+2'; L1.0' X W 0.700' X D 0.011'<BR>FOUND OUT OF LIMITS IAW SRM 53-00-53-1A-2'<BR>USED DEPTH GAGE; ID: ATS2472; DUE: 12/31/2023;[04] REMOVED FLOOR TO SIDEWALL SUPPORT CORROSION BS 727A+9 - 767 RBL 20 WL 156 IAW SRM 51-40-02-0G-0;[05] VERIFIED ITEMS 2;3.<BR>VERIFIED OUT OF LIMITS.;[06] ROMOVED FLOOR TO SIDEWALL SUPPORT FROM BS 727 - 767 RBL 20 WL 156 IAW SRM 51-40-02-0G-0;[07] FABRICATED ; LOCATED AND DRILLED NEW SIDEWALL SUPPORT FROM BS 727+4 TO BS 767 ;RBL 20; WL 156 IAW SRM 51-40-05-0G-0 AND DWG 146A7502;ID:0049;REV:-;MATERIAL BAC1496-377 7075-T62; LOT#1526048-1.<BR>APPLIED CHEMICAL CONVERTION IAW AMM 51-21-41-370-802; REQUEST OK TO APPLY PRIMER;[08] VERIFIED CORRECTIVE ACTION 7.<BR>OK TO PRIME;[09] APPLIED PRIMER ON NEW FLOOR TO SIDEWALL SUPPORT IAW AMM 51-21-72-370-804; REQUES OK TO INSTALL ADHESIVELY BONDED NUTPLES

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