Service difficulty report · Support · Boeing 73776N

Difficulty date
August 20, 2021
Submitted
October 4, 2021
Operation
Air carrier
Aircraft
N7822A
Make and model
Boeing 73776N
Aircraft serial
32596
Aircraft time
59,949 hours, 29,584 cycles
Part
Support
Part number
143A75012
Condition
Corroded
Location
Fwd Cargo Bay
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

CORROSION ON FLOOR TO SIDEWALL SUPPORT AT FWD CARGO BAY BS411 RBL24 WL156. ; / [01] CORROSION ON SUPPORT WAS FOUND TO BE OUT OF LIMIT DUE TO PROXIMITY TO FASTENER HOLES PER SRM 53-00-53-1A-2 FIGURE 103 DETAIL D.; [02] VERIFIED OUT OF LIMITS PER SRM 53-00-53-1A-2.; [03] UPDATED MEASUREMENTS; [04] REMOVED FLOOR TO SIDEWALL SUPPORT AT FWD CARGO BAY BS 396 TO 420 PER SRM 51-40-02-0G-0; [05] FABRICATED FCB FLOOR TO SIDEWALL SUPPORT BS 400-420; RBL 24 WL 156 IAW SRM 50-40-05 DWG# 143A7501. APPLIED CHEMICAL CONVERSION COATING IAW SRM 51-20-01. REQUEST OK TO APPLY PRIMER.; [06] VERIFIED FABRICATED FCB FLOOR TO SIDEWALL SUPPORT BS 400-420; RBL 24 WL 156 IAW SRM 50-40-05 AND DWG# 143A7501.<BR>VERIFIED APPLIED CHEMICAL CONVERSION COATING IAW SRM 51-20-01.<BR>VERIFIED OK TO PRIME.; [07] APPLIED PRIMER IAW SOPM 20-41-02; [08] VERIFIED CORRECTIVE ACTION ENTRY 7.; [09] OK TO INSTALL FCB RH FLOOR TO SIDEWALL SUPPORT BS 396 - 420; [10] OK TO INSTALL FCB RH FLOOR TO SIDEWALL SUPPORT BS 396-420 GIVEN.; [11] INSTALLED FCB RH FLOOR TO SIDEWALL SUPPORT ; BS 396-420; RBL24; IAW SRM 51-40-02-0G-0; DWG143A7500.; [12] VERIFIED INSTALLED FCB RH FLOOR TO SIDEWALL SUPPORT ; BS 396-420; RBL24; IAW SRM 51-40-02-0G-0; DWG143A7500.

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