Service difficulty report · Support · Boeing 737*

Difficulty date
March 2, 2022
Submitted
March 31, 2022
Operation
Air carrier
Aircraft
N763SW
Make and model
Boeing 737*
Aircraft serial
27877
Aircraft time
74,817 hours, 44,183 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 ON FWD CARGO BAY FLOOR TO SIDEWALL SUPPORT AT RBL 24 BS 500A+2; BS 500A+7; BS 500A+12; BS 500A+16; BS 500B+6; BS 500B+10; BS 500B+14; BS 500B+18; BS 500C+1. CORROSION ON FWD CARGO BAY FLOOR TO SIDEWALL SUPPORT AT RBL 24 BS 500A+2 BS 500A+7 BS 500A+12 BS 500A+16 BS 500B+6 BS 500B+10 BS 500B+14 BS 500B+18 BS 500C+1. / [01] REMOVED CORROSION FROM FCB R/H FLOOR TO SIDEWALL SUPPORT BS 500A -500D <BR><BR>BS500A+2 MEASURED 1.3'L X 1.1'W AND 0.013'DEEP ORIGINAL THICKNESS OF 0.040' FOUND OUT OF LIMITS PER SRM 53-00-53-1A-2<BR><BR>BS500A+7 MEASURED 1.4'L X 0.9'W AND 0.003'DEEP ORIGINAL THICKNESS OF 0.040' FOUND IN LIMITS PER SRM 53-00-53-1A-2<BR><BR>BS500A+12 MEASURED 1.5'L X 0.9'W AND 0.008'DEEP ORIGINAL THICKNESS OF 0.040' FOUND OUT OF LIMITS PER SRM 53-00-53-1A-2BS500C+1 MEASURED 1.5'L X 0.7'W AND 0.006'DEEP ORIGINAL THICKNESS OF 0.040' FOUND OUT OF LIMITS PER SRM 53-00-53-1A-2[05] FABRICATED REPLACEMENT SIDEWALL SUPPORT FROM BAC1496-444#7075T6; LOT 1479718-1 IAW PL143A7501 ID: REV:H; DWG 143S7501 ID:003 REV:A; SRM 51-40-05; SRM 51-40-06; SRM 51-40-08 APPLIED CHEMICAL CONVERSION COATING IAW SRM 51-20-01 OK TO PRIME.