Service difficulty report · Intercostal · Boeing 737*

Difficulty date
October 7, 2021
Submitted
November 22, 2021
Operation
Air carrier
Aircraft
N450WN
Make and model
Boeing 737*
Aircraft serial
32470
Aircraft time
58,641 hours, 34,716 cycles
Part
Intercostal
Condition
Corroded
Location
Fuselage
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 ON INTERCOSTAL AT AFT CARGO BAY BS795 RBL6 WL152. ; / [01] EVALUATED CORROSION; FOUND TO BE OUT OF LIMITS DUE TO NO LIMITS IN THE SRM AND REQUIRES REPLACEMENT PER SRM 51-10-02-0G-0; [02] REMOVED OLD INTERCOSTAL; RECEIVED NEW INTERCOSTAL; LOCATED DRILLED ALL PER SRM 51-40-02-0G-0; SRM 51-40-05; AND DWG 146A8130; OK TO INSTALL; [03] VERIFIED REMOVED OLD INTERCOSTAL; RECEIVED NEW INTERCOSTAL; LOCATED DRILLED ALL PER SRM 51-40-02-0G-0; SRM 51-40-05; AND DWG 146A8130; OK TO INSTALL; [04] INSTALLED NEW INTERCOSTAL AT ACB BS787 - BS807; RBL16; WL152 PER SRM 51-40-02-0G-0; SRM 51-40-02; AND DWG 146A8130; [05] INSTALLED NEW INTERCOSTAL AT ACB BS787 - BS807; RBL16; WL152 PER SRM 51-40-02; AND DWG 146A8130; [06] VERIFIED CORRECTIVE ACTION 5.; [07] VERIFIED INTERCOSTAL REPLACED. ALL WORK ACCOMPLISHED.