Service difficulty report · Intercostal · Boeing 7377H4

Difficulty date
April 27, 2022
Submitted
May 25, 2022
Operation
Air carrier
Aircraft
N479WN
Make and model
Boeing 7377H4
Aircraft serial
33990
Aircraft time
59,976 hours, 35,850 cycles
Part
Intercostal
Condition
Cracked
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

INTERCOSTAL IS CRACKED BETWEEN STA 312 TO STA 328;LBL47. / [01] REMOVED INTERCOSTAL CRACKED BETWEEN FS 312-328 LBL 47;WL 208 IN REF B737-700 SRM 51-40-02-0G-0;[02] LOCATED AND DRILLED NEW INTERCOSTAL BETWEEN FS 312-328 LBL 47;WL 208 IN REF B737-700 SRM 51-40-05-0G-0;[03] VERIFIED STEPS 1 AND 2;[04] OK TO TREAT AND PRIME HOLES;[05] TREATED AND APPLIED PRIMER AT NEW INTERCOSTAL BETWEEN FS 312-328 LBL 47;WL 208 IN REF B737-700 SRM 51-20-01-0-0G-0;[06] VERIFIED STEP 5;[07] OK TOP INSTALL INTERCOSTAL;[08] INSTALLED NEW INTERCOSTAL CRACKED BETWEEN FS 312-328 LBL 47;WL 208 IN REF B737-700 SRM 51-40-02-0G-0

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