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
143A750180
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 BS400 TO BS420 LBL23 WL156. ; / CORROSION ON SUPPORT WAS FOUND TO BE OUT OF LIMITS DUE TO PROXIMITY TO FASTENER HOLES PER SRM 53-00-53-1A-2 FIG 103 DETAIL REMOVED FLOOR TO SIDEWALL SUPPORT AT FWD CARGO BAY BS 400 TO BS 420 LBL 23 WL 156 PER SRM 51-40-02-0G-0 FABRICATED NEW FLOOR TO SIDEWALL SUPPORT BS 396 TO 500D L/H; AND SPLICE REPAIR BS 480 TO 500 L/H FROM EXTRUSION CLAD BAC1496-444#7075T62 LOT# 1466509-1 PER SRM 53-00-53-2R-5; SRM51-40-05-0G-0; AND DWG 143A7501LOCATED AND DRILLED NEW FLOOR TO SIDEWALL SUPPORT AND SPLICE REPAIR PER PER SRM 53-00-53-2R-5; SRM51-40-05-0G-0; AND DWG 143A7501] INSTALLED SPLICE REPAIR PER SRM 53-00-53--2R-5 AND DWG 143A7501] INSTALLED FLOOR TO SIDEWALL SUPPORT AT FWD CARGO BS 396 TO500D LBL 23 WL 156 PER SRM 51-40-02-0G-0; AND DWG 143A7500

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