Service difficulty report · Web · Boeing 7377H4

Difficulty date
May 3, 2022
Submitted
June 9, 2022
Operation
Air carrier
Aircraft
N477WN
Make and model
Boeing 7377H4
Aircraft serial
33988
Aircraft time
60,414 hours, 35,826 cycles
Part
Web
Part number
147A574416
Condition
Corroded
Location
Cabin Floor
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 AFT PASSENGER CABIN FLOOR WEB AT STA 1016+6; WL 208; BUTT LINE 0. / [01] NO ALLOWABLE DAMAGE FOUND ON SRM; REPLACE PART IAW SRM 51-10-02-0G-0;[02] CORRECT WL;[03] CERTIFY;[04] VERIFIED CORRECTIVE ACTION #1;[05] CORRECTION OF MEASUREMENT BLOCK REPAIR TYPE MINOR;[06] CERTIFY;[07] VERIFIED MEASUREMENT TABLE;[08] STARED REMOVAL OF THE AFT R/H CABIN FLOOR WEB AT BS 1016 TO 1032 PER SRM 51-40-02;[09] REMOVED AFT R/H CABIN FLOOR WEB FROM BS 1016 TO BS 1032; BL 0 TO RBL 38 PER SRM 51-40-02.;[10] LOCATED AND DRILLED NEW R/H FLOOR WEB 147A5744-16 FROM BS 1016 TO BS 1032; BL 0 TO RBL 38 PER DWG 147A5730; DWG 140A9870; AND SRM 51-40-05. OK TO INSTALL.;[11] VERIFIED CORRECTIVE ACTION ENTRY 10. OK TO INSTALL GIVEN.;[12] REMOVED TENSION STRAP AT BS 1006 - 1029; RBL 3; WL 208 FOR ACCESS PER SRM 51-40-02.;[13] REQUEST OK TO INSTALL NEW FLOOR WEB;[14] OK TO INSTALL;[15] BEGAN INSTALLING AFT R/H CABIN FLOOR WEB PER SRM 51-40-02-0G-0; DWG# 140A9870 AND DWG# 147A5730;[16] CONTINUED INSTALLING AFT R/H CABIN FLOOR WEB PER SRM 51-40-02-0G-0; DWG 140A9870 AND DWG 147A5730.;[17] INSTALLED AFT R/H CABIN FLOOR WEB PER SRM 51-40-02-0G-0; DWG 140A9870 AND DWG 147A5730;[18] VERIFIED CORRECTIVE ACTION 17;[19] REINSTALLED TENSION STRAP AT BS 1006 - 1029; RBL 3; WL 208 FOR PER SRM 51-40-02 AND DWG# 147A5730 REV C; VERIFIED NRC IS COMPLETE.;[20] VERIFIED CORRECTIVE ACTION 19;[21] VERIFIED COMPLETE

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