Service difficulty report · Intercostal · Boeing 737790

Difficulty date
August 15, 2022
Submitted
August 26, 2022
Operation
Air carrier
Aircraft
N560WN
Make and model
Boeing 737790
Aircraft serial
30542
Aircraft time
70,697 hours, 34,642 cycles
Part
Intercostal
Condition
Elongated
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

INTERCOSTAL HAS ELONGATED HOLE COMMON TO FLOOR RAIL BS 727A-727B RBL 13 / [01] REMOVED INTERCOSTAL HAS ELONGATED HOLE COMMON TO FLOOR RAIL BTW BS 727A-727B RBL 13 IAW SRM 51-40-02-0G-0.;[02] REMOVED (2EA) CLIPS FOR ACCESS LOCATED BTW BS 727A - 727B IAW SRM 51-40-02.;[03] RECEIVED THE INTERCOSTAL FROM THE MACHINE SHOP HT TO T6 AND PENETRANT INSPECTED ON CUSTOMER RO# 879198-SWA (JOB#552221).;[04] FABRICATED/ LOCATED AND DRILLED INTERCOSTAL FROM BS 727A-BS 727B RBL 13. TREATED.... IAW SRM 51-40-05 AND IAW DWG#146A7500... OK TO PRIME;[05] VERIFIED CORRECTIVE ACTION 3 AND 4.<BR>OK TO PRIME;[06] APPLIED TWO LAYERS OF BMS 10-11 PRIMER TO THE INTERCOSTAL IAW SOPM 20-41-02 AND IAW DWG#146A7505.... OK TO INSTALL;[07] VERIFIED CORRECTIVE ACTION 6.<BR>OK TO INSTALL;[08] INSTALLED ACB INTERCOSTAL AT BS 727A-BS 727B RBL 13 IAW SRM 51-40-02-0G-0 AND DWG#146A7500 REV-C;[09] VERIFIED CORRECTIVE ACTION #8.