Service difficulty report · Intercostal · Boeing 7377H4

Difficulty date
December 29, 2022
Submitted
January 31, 2023
Operation
Air carrier
Aircraft
N213WN
Make and model
Boeing 7377H4
Aircraft serial
34217
Aircraft time
58,853 hours, 35,162 cycles
Part
Intercostal
Part number
NOTREPORTED
Condition
Cracked
Location
Zn 200 Fus Top
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

FWD WET AREA FLOOR SUPPORT INTERCOSTAL CRACKED @ UPPER CAP BL-0 BETWEEN STA 344 AND STA 360 MKD DOT<[01] INSTALLED EWIS.ON FAULT # TTG8Q003DV3A.;[02] REMOVED INTERCOASTAL AT FWD WET AREA STA 340 TO STA 360;BL 0.PER B 737-700 SRM 51-40-02-0G-0.;[03] VERIFIED STEPS 1 AND 2.;[04] LOCATED AND DRILLED NEW INTERCOASTAL AT FWD WET AREA STA 340 TO STA 360 BL-0 PER B737-700 SRM 51-40-02-0G-0;[05] CORRECTING STEP 4 : LOCATED AND DRILLED NEW INTERCOASTAL AT FWD WET AREA STA 340 TO STA 360 BL-0 PER B737-700 SRM 51-10-02-0G-0.;[06] VERIFIED STEP 5. OK TO TREAT AND PRIME;[07] TREATED AND PRIMED INTERCOASTAL PER B737-700 SRM 51-20-01-0G-0 & AMM 51-21-72-370-804;[08] VERIFIED STEP 7. OK TO INSTALL INTERCOSTAL;[09] INSTALLED INTERCOASTAL AT FWD WET AREA BL-0 BETWEEN STA 344 AND STA 360 PER B737-700 SRM 51-40-02-0G-0 AND DRWG #141A5410.;[10] REMOVAL OF EWIS PROTECTION WILL BE ACCOMPLISHED ON FAULT #TTG8Q003DV3A.;[11] VERIFIED STEPS 9 AND 10.;[12] C/W INSTRUCTIONS

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