Service difficulty report · Intercostal · Boeing 7377H4

Difficulty date
March 27, 2023
Submitted
May 3, 2023
Operation
Air carrier
Aircraft
N436WN
Make and model
Boeing 7377H4
Aircraft serial
32456
Aircraft time
66,420 hours, 39,287 cycles
Part
Intercostal
Condition
Corroded
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

CORROSION WEB - INTERCOSTAL LOCATED BETWEEN BS492 TO BS500A RBL21 AND WL156 AT FWD CARGO COMPARTMENT 2023-208806<[01] REPLACED WEB - INTERCOSTAL LOCATED BETWEEN BS492 TO BS500A RBL21 AND WL156 AT FWD CARGO COMPARTMENT I.A.W. B737-700 SRM 51-40-02 ITEM 9;[02] CORRECTED STEP 1: (ADDED DWG)<BR>REPLACED WEB - INTERCOSTAL LOCATED BETWEEN BS492 TO BS500A RBL21 AND WL156 AT FWD CARGO COMPARTMENT I.A.W. B737-700 SRM 51-40-02 ITEM 9 AND DWG 143A0080 SH 19 REV. -;[03] REPLACED WEB - INTERCOSTAL LOCATED BETWEEN BS492 TO BS500A RBL21 AND WL156 AT FWD CARGO COMPARTMENT I.A.W. B737-700 SRM 51-40-02 ITEM 9 AND DWG 143A0080 SH 19 REV. -RII CERTIFIED;[04] CORRECTED STEP 2:<BR>REPLACED WEB - INTERCOSTAL LOCATED BETWEEN BS492 TO BS500A RBL21 AND WL156 AT FWD CARGO COMPARTMENT I.A.W. B737-700 SRM 51-40-02 ITEM 9 AND DWG 143A0080 SH 19 REV. - SEE INSTALLED NEW WEB INTERCOSTAL ON CPCP AD MOC WITH TTG8Q0049LHQ. SEE INDIVIDUAL SIGN OFFS BELOW;[05] REPLACED WEB - INTERCOSTAL LOCATED BETWEEN BS492 TO BS500A RBL21 AND WL156 AT FWD CARGO COMPARTMENT I.A.W. B737-700 SRM 51-40-02 ITEM 9 AND DWG 143A0080 SH 19 REV. - SEE INSTALLED NEW WEB INTERCOSTAL ON CPCP AD MOC WITH TTG8Q0049LHQ. SEE INDIVIDUAL SIGN OFFS BELOW RII CERTIFIED

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