Service difficulty report · Intercostal · Boeing 7377H4

Difficulty date
January 6, 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 INTERCOSTAL IS CRACKED BETWEEN 288-294.5 ON CENTER LINE<[01] REMOVED INTERCOSTAL CRACKED AT MAIN CABIN STA 288 TO STA 294.5 BL 0 PER SRM 51-40-02-0G-0;[02] VERIFIED STEP 1;[03] OK TO LOCATE AND DRILL HOLES;[04] LOCATE AND DRILLED NEW INTERCOSTAL AT MAIN CABIN STA 288 TO STA 294.5 BL 0 PER REF. SRM 51-40-05-0G-0;[05] VERIFIED STEP 4;[06] OK TO TREAT AND PRIME HOLES;[07] TREATED AND PRIMED PER REF SRM 51-20-01-0G-0;[08] VERIFIED STEP 7;[09] OK TO INSTALL INTERCOSTAL;[10] INSTALLED NEW INTERCOSTAL SAT 288-294.5 ON CENTER LINE PER REF SRM 51-40-02-0G-2;[11] REMOVED AND REPLACED INTERCOSTAL AT MAIN CABIN FLOOR SUPPORT BETWEEN STA 288-294.5 BL 0 PER SRM 51-40-02-0G-0 AND DWG 141A5400;[12] FOD AND EWIS PROTECTION WAS INSTALL AND WILL REMOVE ON TTG8Q00H2GL3;[13] VERIFIED STEPS 11 AND 12;[14] VERIFIED STEP 10

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