Service difficulty report · Web · Boeing 7377H4

Difficulty date
May 8, 2023
Submitted
May 18, 2023
Operation
Air carrier
Aircraft
N243WN
Make and model
Boeing 7377H4
Aircraft serial
34863
Aircraft time
56,458 hours, 33,945 cycles
Part
Web
Condition
Cracked
Location
Zn 100 Fus Lower
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

DURING HFEC HOLE INSPECTION; FOUND CRACK INDICATIONS IN 2 EA HOLES IN UPPER BLADDER SEAL WEB AT STA 663; RBL 47; WL 198. CIRCLED IN BLACK.<[01] REMOVED RBL 47 WL 198 STA 663 UPPER BLADDER SEAL WEB IAW SRM 51-40-02-0G-0;[02] VERIFIED MATERIAL FOR NEW UPPER BLADDER SEAL WEB P/N 2024-T3-.050 ATAG A3150 IAW BOEING DWG 111A1112 REV -;[03] VERIFIED MATERIAL FOR NEW UPPER BLADDER SEAL WEB P/N 2024-T3-.050 ATAG A3150 IAW BOEING DWG 111A1112 REV A;[04] FABRICATED NEW UPPER BLADDER SEAL WEB IAW BOEING DWG 111A1112;[05] VERIFIED ACTION ITEM 4;[06] OK GIVEN TO TREAT AND PRIME;[07] TREATED AND PRIMED NEW UPPER BLADDER SEAL WEB IAW AMM 51-21-41-370-803 AMM 51-21-72-370-804;[08] VERIFIED ITEM 7;[09] OK GIVEN TO INSTALL NEW WEB;[10] STARTED INSTALLING NEW BLADDER SEAL WEB IAW BOEING DWG 111A1112 REV A SRM 51-40-02-0G-0;[11] VERIFIED ACTION 10;[12] VERIFIED ACTION ITEM 10;[13] CONTINUED INSTALLING UPPER BLADDER SEAL WEB IAW SRM 51-40-02-0G-0.;[14] VERIFIED STEP 13;[15] COMPLETED INSTALLING NEW UPPER BLADDER SEAL WEB IAW SRM 51-40-02-0G-0 BOEING DWG 111A1000 REV -;[16] VERIFIED ACTION ITEM 15;[17] REMOVED BLADER SEAL WEB; FABRICATED NEW; VERIFIED PART MEETS CONFORMITY INSPECTION REQUIREMENTS PER DWG 111A1112 REV -; AND INSTALLED NEW WAB IAW SRM 51-40-02-0G-0; DWG 111A1112 REV-; DWG 111A1000 REV-;[18] VERIFIED ACTION ITEM 17;[19] JOB COMPLETE; AUDIT C/W

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