Service difficulty report · Support · Boeing 7377BD

Difficulty date
January 26, 2022
Submitted
April 4, 2022
Operation
Air carrier
Aircraft
N7730A
Make and model
Boeing 7377BD
Aircraft serial
33926
Aircraft time
51,354 hours, 27,779 cycles
Part
Support
Condition
Corroded
Location
Fwd Cargo
Stage of operation
NR
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 FLOOR TO SIDEWALL SUPPORT FROM STA 500A+6 TO STA 500C+15; RBL 24; WL 156. / [01] EVALUATED CORROSION AT ALL LOCATIONS ON FLOOR TO SIDEWALL SUPPORT; FOUND DEEPEST LOCATION TO BE AT BS 500B+10 RBL 24 WL 156; FOUND 0.015 REMOVED FROM ORIG 0.040 IN 1'X1' AREAS; FOUND TO BE OUT OF LIMITS PER SRM 53-00-53-1A-2 USING DIAL DEPTH GAUGE ID ATS 2677;[02] VERIFIED CORRECTIVE ACTION 1;[03] FABRICATED NEW RH FLOOR TO SIDEWAL SUPPORT; BS 500A-500D; RBL 24; APPLIED CHEMICAL CONVERSION COATING; SRM 51-20-01-0G-0; SRM53-30-53-01-2; SRM 51-40-05-0G-0; DWG 143A7500. MATERIAL BAC1496-444#7075T62. LOT# 1475361-1 AND OK TO PRIME.;[04] VERIFIED CORRECTIVE ACTION #3;[05] PRIMED FCB RH FLOOR TO SIDEWALL SUPPORT; BS 500A-500D; RBL 24; IAW SRM 51-20-01-0G-0.;[06] ADDING PRIMER REFERENCE; AMM 51-21-72-370-804.;[07] VERIFIED CORRECTIVE ACTIONS 5; 6. <BR><BR>PART TO BE INSTALLED ON TTG8Q004FQ4V

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