Service difficulty report · Floor Support · Boeing 7378H4

Difficulty date
March 25, 2022
Submitted
April 20, 2022
Operation
Air carrier
Aircraft
N8628A
Make and model
Boeing 7378H4
Aircraft serial
42384
Aircraft time
27,196 hours, 12,448 cycles
Part
Floor Support
Part number
147A56603
Condition
Corroded
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 FLOOR SUPPORT STA 949; RBL 26.5; WL 208. / [01] REMOVED AFT LAV FLOOR MOUNT BS 947 RBL 25 IAW SRM 51-40-02-0G-0.;[02] VERIFIED APPLICABILITY OF SRM 53-70-15-1A-1;[03] REMOVED CORROSION ON FLOOR SUPPORT BS 949 RBL 26.5 WL 208 AT EDGE REMOVED MATERIAL 0.10' FOUND TO BE OUT OF LIMITS IAW BOEING DWG 147A5650 AND SRM 53-70-51-1A-1.;[04] VERIFIED CORRECTIVE ACTIONS 2 AND 3.;[05] REMOVED; LOCATED AND DRILLED NEW FLOOR SUPPORT STA 949 - STA 961 RBL 26.5 WL 208 IAW SRM 51-40-05-0G-0 AND DWG 147A5650;[06] OK TO INSTALL;[07] VERIFIED CORRECTIVE ACTION 5 AND 6.<BR>OK TO INSTALL;[08] INSTALLED NEW FLOOR SUPPORT STA 949 - STA 961 RBL 26.5 WL 208 IAW SRM 51-40-05-0G-0 AND DWG 147A5650;[09] VERIFIED CORRECTIVE ACTION 8;[10] VERIFIED COMPLETE;[11] CHANGED CORRODED ELEMENT PART NUMBER FROM 147A5660U3 TO 147A5660-3

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