Service difficulty report · Floor Panel · Boeing 7378

Difficulty date
June 7, 2023
Submitted
June 27, 2023
Operation
Air carrier
Aircraft
N8705Q
Make and model
Boeing 7378
Aircraft serial
42558
Aircraft time
12,340 hours, 5,351 cycles
Part
Floor Panel
Part number
UNKNOWN
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

DOT 075-30 AFT CARGO FLOOR PANEL 140CF CORROSION AROUND EDGES OF PANEL.<[01] VERIFIED MATERIAL I.A.W. SRM 53-00-53-1A-1 AND BOEING DWG 453A2610-32 REV D;[02] VERIFIED STEP 1;[03] STARTED FABRICATING FLOOR PANEL I.A.W. 50-10-04-400-801;[04] VERIFIED STEP 3;[05] FABRICATED FLOOR PANEL I.A.W. 50-10-04-400-801; READY TO TREAT AND PRIME;[06] VERIFIED STEP 5<BR><BR>OK TO TREAT AND PRIME;[07] TREATED AND PRIMED FLOOR PANEL I.A.W. AMM 51-21-41-370-801 AND 51-21-72-370-804;[08] OUT OF SEQUENCE. EVALUATED CORROSION ON FLOOR PANEL 140CF; FOUND TO BE OUT OF LIMITS; MAX ALLOWABLE DAMAGE IS 3'; MEASURED WITH STEEL RULE IAW SRM 53-00-53-1A-1 STEP 5.A.(B)1);[09] VERIFIED ITEMS 7 AND 8 <BR><BR>AUDIT C/W

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