Service difficulty report · Support · Boeing 7377H4

Difficulty date
May 12, 2021
Submitted
May 17, 2021
Operation
Air carrier
Aircraft
N222WN
Make and model
Boeing 7377H4
Aircraft serial
34290
Aircraft time
52,415 hours, 31,247 cycles
Part
Support
Condition
Corroded
Location
Bs 870
Stage of operation
NR
How discovered
9
Nature of condition
O
Precautionary procedure
O

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 AFT CARGO BAY BS870 RBL21 WL166. REMOVED CORROSION ON FLOOR TO SIDEWALL SUPPORT. REWORKED AREA MAX. MATERIAL LOSS L=2.7;W=2.0;D=0.007. FOUND TO BE OUT OF LIMITS IAW SRM 53-00-53-1A-1 STEP 4A(2)(A) FIG103. FOUND OUT OF LIMITS IAW SRM 53-00-53-1A-1 STEP 4A(2)(A) FIG103. LOCATED & DRILLED ACB FLOOR TO SIDEWALL SUPPORT IAW SRM 51-40-05-0G-0. INSTALLED AFT CARGO BAY FLOOR TO SIDEWALL SUPPORT RBL 21 FROM BS 887 TO BS 947 WL 166 PER SRM 51-40-02-0G-0; SRM 51-40-05-0G-0; SRM 53-00-53-1A-1 STEP 4A(2)(A) FIG. 103 AND BOEING DRAWING #147A7501.

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