Service difficulty report · Support · Boeing 7377H4

Difficulty date
August 11, 2021
Submitted
August 31, 2021
Operation
Air carrier
Aircraft
N965WN
Make and model
Boeing 7377H4
Aircraft serial
36677
Aircraft time
32,936 hours, 20,041 cycles
Part
Support
Condition
Corroded
Location
Fwd Cargo
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 FWD CARGO BAY FLOOR TO SIDEWALL SUPPORT BS 500A TO BS 500D RBL 23 WL 156 ; / REMOVED FWD CARGO BAY FLOOR TO SIDEWALL SUPPORT BS 500A TO BS 500D RBL 23 WL 156 IAW SRM 51-40-02; REMOVED FWD CARGO BAY FLOOR TO SIDEWALL SUPPORT BS 500A TO BS 500D RBL 23 WL 156 IAW SRM 51-40-02; REMOVED CORROSION FROM FCB LH FLOOR TO SIDEWALL SUPPORT AT MULTIPLE SPOTS; DEEPEST SPOT AT BS 462 IN AN AREA OF L=1' X W=1' X D=.038' UPON FURTHER INVESTIGATION FOUND R/H FLOOR TO SDIEWALL SUPPORT BS 500A - 500D RBL 23 WL 156 TO BE OUT OF LIMITS PER SRM 53-00-53-1A-2. CORROSION WAS REMOVED IN A 54' L X 1' W X .005' D FROM ORIGINAL THICKNESS OF .040 VERIFIED UPON FURTHER INVESTIGATION FOUND R/H FLOOR TO SDIEWALL SUPPORT BS 500A - 500D RBL 23 WL 156 TO BE OUT OF LIMITS PER SRM 53-00-53-1A-2. CORROSION WAS REMOVED IN A 54' L X 1' W X .005' D FROM ORIGINAL THICKNESS OF .040'. FABRICATED NEW FWD CARGO BAY FLOOR TO SIDEWALL SUPPORT BS500A TO BS BS500D RBL23 WL 256 ; IAW DWG 143A7501 SH 127 AND SRM 51-40-02 ; ITEM BAC1496-444#7075T62; LOT 1457271-1; APPLIED CHEMICAL CONVERSION COAT PER AMM 51-21-41-370-801 AND PRIMER PER AMM 51-21-72-370-804;AND APPLIED CHEMICAL CONVERSION COAT PER AMM 51-21-41-370-801 AND PRIMER PER AMM 51-21-72-370-804; OK TO INSTALL FWD CARGO BAY FLOOR TO SIDEWALL SUPPORT BS 500A TO BS 500D ; RBL 23 ; WL 156 INSTALLED FWD CARGO BAY FLOOR TO SIDEWALL SUPPORT BS 500A TO BS 500 RBL 23; WL 156 IAW SRM 51-40-02-0G-0; DWG 143A7500 AND DWG 143A7505

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