Service difficulty report · Floor Support · Boeing 7377H4

Difficulty date
August 3, 2021
Submitted
September 7, 2021
Operation
Air carrier
Aircraft
N449WN
Make and model
Boeing 7377H4
Aircraft serial
32469
Aircraft time
60,089 hours, 35,684 cycles
Part
Floor Support
Condition
Corroded
Location
Bs 767-787
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

AFT CARGO FLOOR SUPPORT IS CORRODED AT B/S 767-787 RIGHT B/L 23 ; / [01] REMOVED CORROSION A AFT CARGO FLOOR SUPPORT AT BS 767-787RIGHT B/L 23AS PER REF B737SRM 51-10-02-0G-0; [02] VERIFIED CORROSION REMOVAL STEP 1.; [03] PERFORMED UT THICKNESS INSP. ON REWORKED AREA AFT CARGO FLOOR SUPPORT @ B/S 767-787 RIGHT B/L 23. IAW B737 NDT PART 4 51-00-00 PROC. 3. MIN THICKNESS .011'. EQUIP: OLYMPUS 27MG CAL DUE: 4/22 B/C 172139; [04] ORIGINAL MATERIAL 0.050' MATERIAL REMOVED 0.039' MATERIAL REMAINING 0.011' FOUND OUT OF LIMITS AS PER REF B737 SRM 53-0053-1A-2 FIG 103-; [05] VERIFIED STEP 4.; [06] RECEIVED NEW SHIELD P/N: 146A8127U12ATSMRO AND INSTALLATION TO BE ACCOMPLISH ON TASKCARD TTG8Q004F6AR.; [07] REMOVED CORROSION ON SUPPORT SHIELD STA.767 TO STA.787 PER SRM 51-10-02-0G-0; FOUND OUT OF LIMITS PER SRM 53-00-53-1A-2 FIG.103;ORIGINAL THICKNESS .050; REMOVED; .011; REMAINING .039 AND NEW SHIELD P/N 146A8127U12 TO BE INSTALLED ON TASK CARD TTG8Q004F6AR; [08] VERIFIED STEPS 6 AND 7.

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