Service difficulty report · Intercostal · Boeing 7378H4

Difficulty date
August 24, 2022
Submitted
September 26, 2022
Operation
Air carrier
Aircraft
N8649A
Make and model
Boeing 7378H4
Aircraft serial
42527
Aircraft time
27,113 hours, 12,631 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; STA 951; LBL 25; WL 208. / [01] UPDATED MEASUREMENTS. VERIFIED SRM APPLICABILITY STATEMENT ALLOWABLE DAMAGE PER SRM 53-70-51-1A-1. ALSO; INTERCOSTAL AT BS 951 LBL25 WL208 AND FOUND TO BE OUT OF LIMITS IAW SRM 53-40-51-1A-1 STEP 1.C AND PART REPLACEMENT PER SRM 51-10-02-0G-0 STEP 9.;[02] INSPECTED & VERIFIED CORRECTIVE ACTION ITEM 1; EXCEPT MEASUREMENT FIELDS.;[03] REMOVED FLOOR SUPPORT BS947-BS967 LBL25 WL208 I.A.W SRM 51-40-02-0G-0.;[04] LOCATED AND DRILLED NEW FLOOR SUPPORT BS947-BS967 LBL25 WL208 I.A.W SRM 51-40-05-0G-0 AND BOEING DWG 147A5650. OK TO INSTALL;[05] VERIFIED CORRECTIVE ACTION 4.<BR>OK TO INSTALL;[06] INSTALLED NEW INTERCOSTAL BS947-BS967 LBL25 WL208 I.A.W SRM 51-40-02-0G-0 AND BOEING DWG 147A5650 COMPLETED ALL REMOVED AND REPLACED TASK;[07] VERIFIED CORRECTIVE ACTION 6;[08] VERIFIED MEASUREMENT TABLE

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