Service difficulty report · Support · Boeing 73776N

Difficulty date
May 10, 2022
Submitted
May 31, 2022
Operation
Air carrier
Aircraft
N7733B
Make and model
Boeing 73776N
Aircraft serial
32678
Aircraft time
50,055 hours, 25,216 cycles
Part
Support
Part number
143A7501186
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 FCB R/H FLOOR TO SIDEWALL SUPPORT FROM STA 500A+2 TO STA 500C+17; RBL 25; WL 156.REMOVED CORROSION FROM FCB R/H FLOOR TO SIDEWALL SUPPORT AT BS500A+6 MEASURED 1.4'L X 0.9'W AND 0.0075'DEEP, FROM FCB R/H FLOOR TO SIDEWALL SUPPORT AT BS500A+10 MEASURED 1.7'L X 1'W AND 0.0095'DEEP, FROM FCB R/H FLOOR TO SIDEWALL SUPPORT AT BS500A+14' MEASURED 1.4'L X 0.9'W AND 0.0065' , FROM FCB R/H FLOOR TO SIDEWALL SUPPORT AT BS500C+15 MEASURED 1.1'L X 0.7'W AND 0.005'DEEP,FROM FCB R/H FLOOR TO SIDEWALL SUPPORT AT BS500A+6 MEASURED 1.4'L X 0.9'W AND 0.0075'DEEP, FROM FCB R/H FLOOR TO SIDEWALL SUPPORT AT BS500A+10 MEASURED 1.7'L X 1'W AND 0.0095'DEEP FOUND TO BE OUT OF LIMITS PER SRM 53-00-53-1A-2. FABRICATED LOCATED AND DRILLED ON FCB R/H FLOOR TO SIDEWALL SUPPORT BS 500A TO BS 500D;RBL 25 WL 156 P/N BAC1496-444#7075T62 IAW SRM 51-40-05 AND DWG 143A7500 REV

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