Service difficulty report · Floor Support · Boeing 7377H4

Difficulty date
May 17, 2021
Submitted
June 28, 2021
Operation
Air carrier
Aircraft
N207WN
Make and model
Boeing 7377H4
Aircraft serial
34012
Aircraft time
52,378 hours, 31,227 cycles
Part
Floor Support
Condition
Corroded
Location
Bs 265 Lbl 5
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 AT B.S. 265; L.B.L. 5; W.L. 207.54. ; / [01] REMOVE CORROSION ON INTERCOSTAL AT B.S.265;L.B.L. 5 ; W.L.207.54; AREA DIMENSION L=2.XW=1.X D=0.009 ORIGINAL THICKNESS 0.040'; MATERIAL REMAINING 0.031' FOUND TO BE OUT OF LIMIT IAW SRM 53-10-51-0I -2 TABLE 2. ITEM [1]FIGURE103; SRM 53-10-51-1A-1 PARAGRAPH 4.B.(2)(A) FIG 105 DETAIL ;C. USED ITEM #DEPTH GAGE; ID#ATS1737;S/N: UNKNOWN; CALIBRATION EXPIRE 07/2021; [02] VERIFIED BLEND OUT OF LIMITS.; [03] REMOVED INTERCOSTAL FROM B.S 260 - B.S 270 B.L. 0 W.L. 207.54 IAW SRM 51-10-02-0G-0; [04] LOCATED AND DRILLED NEW INTERCOSTAL ITEM#141A5211U1 IAW SRM 51-40-05-OG-0 OK TO INSTALL; [05] OK TO INSTALL INTERCOSTAL; [06] INSTALLED INTERCOSTAL IAW SRM 51-40-02-0G-0 AND DRAWING # 141A5210; [07] VERIFIED INSTALLATION OF INTERCOSTAL IAW SRM 51-40-02-0G-0 AND DRAWING #141A5210; [08] VERIFIED INSTALLATION OF INTERCOSTAL IAW SRM 51-40-02-0G-0 AND DRAWING #141A5210

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