Service difficulty report · Intercostal · Boeing 7377H4

Difficulty date
January 9, 2023
Submitted
February 10, 2023
Operation
Air carrier
Aircraft
N214WN
Make and model
Boeing 7377H4
Aircraft serial
32486
Aircraft time
59,300 hours, 35,194 cycles
Part
Intercostal
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

CABIN FLOOR SUPPORT BETWEEN STA312-328 LBL 45.5 INTERCOSTAL CRACKED<[01] REMOVED CABIN FLOOR SUPPORT BETWEEN STA312-328 LBL 45.5 INTERCOSTAL CRACKED IN REF SRM 51-40-02-0G-0 AND FOUND OUT OF LIMITS IN REF SRM 51-10-02-0G-0;[02] LATE ENTRY :<BR>INSTALLED EWIS PROTECTION AT CABIN FLOOR SUPPORT BETWEEN STA312-328 LBL 45.5 IN REF AMM 20-60-07-913-801;[03] LOCATED AND DRILLED NEW INTERCOSTAL IN REF SRM 51-40-05-0G-0;[04] VERIFIED STEPS:1 AND 2;[05] VERIFIED STEP 3. <BR>OK TO TREAT AND PRIME.;[06] TREATED AND APPLIED PRIMER AT NEW HOLES AT INTERCOSTAL IN REF SRM 51-20-01-0G-0;[07] VERIFIED STEP 6. <BR>OK TO INSTALL NEW INTERCOSTAL.;[08] INSTALLED CABIN FLOOR SUPPORT INTERCOSTAL BETWEEN STA312-328 LBL 45.5 INTERCOSTAL IN REF SRM 51-40-02-0G-0;[09] REMOVED EWIS PROTECTION AT CABIN FLOOR SUPPORT BETWEEN STA312-328 LBL 45.5 IN REF AMM 20-60-07-913-801;[10] REMOVED CABIN FLOOR SUPPORT BETWEEN STA312-328 LBL 45.5 INTERCOSTAL IN REF SRM 51-40-02-0G-0 AND FOUND OUT OF LIMITS IN REF SRM 51-10-02-0G-0; LOCATED AND DRILLED NEW INTERCOSTAL IN REF SRM 51-40-05-0G-0 AND INSTALLED CABIN FLOOR SUPPORT INTERCOSTAL BETWEEN STA312-328 LBL 45.5 INTERCOSTAL IN REF SRM 51-40-02-0G-0;[11] VERIFIED STEPS:8;9 AND 10.

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