Service difficulty report · Support · Boeing 7377H4

Difficulty date
March 31, 2022
Submitted
April 25, 2022
Operation
Air carrier
Aircraft
N769SW
Make and model
Boeing 7377H4
Aircraft serial
30588
Aircraft time
74,146 hours, 43,614 cycles
Part
Support
Condition
Corroded
Location
Fuselage
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 ACB R/H FLOOR TO SIDEWALL FROM STA 867+7; TO STA 927+17; RBL 22; WL 165 TO WL 178. / [01] REMOVED CORROSION FROM ACB R/H FLOOR TO SIDEWALL SUPPORT AT BS867+7 MEASURED 1.2'L X 0.6'W AND 0.001'DEEP ORIGINAL THICKNESS OF 0.040' FOUND IN LIMITS PER SRM 53-00-53-1A-2<BR><BR>REMOVED CORROSION FROM ACB R/H FLOOR TO SIDEWALL SUPPORT AT BS867+12 MEASURED 1.6'L X 0.8'W AND 0.0065'DEEP ORIGINAL THICKNESS OF 0.040' FOUND OUT OF LIMITS PER SRM 53-00-53-1A-2<BR><BR>REMOVED CORROSION FROM ACB R/H FLOOR TO SIDEWALL SUPPORT AT BS867+15 MEASURED 1.7'L X 0.8'W AND 0.017'DEEP ORIGINAL THICKNESS OF 0.040' FOUND OUT OF LIMITS PER SRM 53-00-53-1A-2<BR><BR>CAL ID DIAL DEPTH GAUGE <BR>ATS400<BR>S/N UNKNOWN<BR>DUE 08/2022;[02] UPDATED MEASURMENTS;[03] VERIFIED CORRECTIVE ACTION #1;[04] FABRICATED REPLACEMENT ACB R/H FLOOR TO SIDEWALL SUPPORT BS867-947 OUT OF BAC1496-377#7075T62 LOT#1477731-1 PER SRM 51-40-05-0G-0; SRM 51-40-08-0G-0; DWG 147A7501 AND DWG 146A7502;[05] VERIFIED CORRECTIVE ACTION #4;[06] APPLIED CHEMICAL CONVERSION COATING AND PRIMER ON ACB R/H FLOOR TO SIDEWALL SUPPORT BS 867 TO BS 947 RBL 22;WL 165 IAW SRM 51-20-01` AND AMM 51-21-72-370-804.;[07] VERIFIED CORRECTIVE ACTION 6

More about the Boeing 737-7H4