Service difficulty report · Intercostal · Boeing 7377H4

Difficulty date
October 3, 2022
Submitted
November 1, 2022
Operation
Air carrier
Aircraft
N210WN
Make and model
Boeing 7377H4
Aircraft serial
34162
Aircraft time
59,036 hours, 35,216 cycles
Part
Intercostal
Condition
Cracked
Location
Zn 900 Lav/Galle
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 CABIN INTERCOSTAL BETWEEN STA 380 AND 400 BL-0 WL 208.1 POSSIBLE CRACK AROUND CTR. FASTENER HOLE AS MARKED. 124-014 / [01] CRACK CONFIRMED IAW NDTM PART 6; 51-00-00 PROCEDURE 23. CRACK LENGTH : 0.250'<BR><BR>[NORTEC 600 ; B/C 166317 ; CALIB.DUE- 10/22];[02] REMOVED DAMAGED UPPER ANGLE ON INTERCOSTAL BETWEEN STA 380 TO STA 400 AND BL-0 AS PER B737-7 SRM 51-40-02-0G-0.;[03] LOCATED AND OPENED NEW FASTENER HOLES AT NEW UPPER ANGLE ON INTERCOSTAL BETWEEN STA 380 TO STA 400 AND BL-0 AS PER B737-7 SRM 51-40-02-0G-0.;[04] VERIFIED STEPS 2 AND 3. OK TO INSTALL NEW UPPER ANGLE.;[05] REMOVED AND REPLACED UPPER ANGLE ON INTERCOSTAL BETWEEN STA 380 TO STA 400 AND BL-0 AS PER B737-7 SRM 51-40-02-0G-0.;[06] VERIFIED STEP 5 - REMOVED AND REPLACED UPPER ANGLE ON INTERCOSTAL BETWEEN STA 380 TO STA 400 AND BL-0

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