Service difficulty report · Skin · Boeing 7377H4

Difficulty date
July 24, 2021
Submitted
September 15, 2021
Operation
Air carrier
Aircraft
N447WN
Make and model
Boeing 7377H4
Aircraft serial
33720
Aircraft time
58,733 hours, 34,620 cycles
Part
Skin
Condition
Chafed
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

PANEL 194CR INNER SKIN MATING SURFACE IS CHAFED. / [01] IDENTIFIED PANEL 194CR / MATERIAL IAW SRM 53-60-70-0I-1 FIG. 2 TABLE 2 ITEM [6]. <BR><BR>FOUND DAMAGE TO BE OUT OF ALLOWABLE LIMITS IAW SRM 53-60-70-1A-1 PARA 4. B. (8). FIG. 105. <BR><BR>REPAIR TO BE ACCOMPLISHED IAW SRM 51-70-05-2R-6 PER SRM 53-60-70-2R-1. <BR><BR>REMOVED CHAFED DAMAGE ON INNER SKIN MATING SURFACE; PREPARED AND CLEANED REPAIR AREA WITH NO CONTAMINATION NOTED; IAW SRM 51-70-05-2R-6 PARA 4 A. - D.; [02] VALIDATED REPAIR TO PANEL 194CR TO BE COMPLETED IAW SRM 51-70-05-2R-6 AS GIVEN IAW SRM 53-60-70-2R-1.; [03] VERIFIED MATERIAL ID PER SRM 53-60-70-0I-1<BR>VERIFIED DAMAGE IS OUT OF LIMITS PER SRM 53-60-70-1A-1<BR>VALIDATED REPAIR PER SRM 51-70-05-2R-6 <BR>VERIFIED WORK PERFORMED PER SRM 51-70-05-2R-6; [04] USING BMS 8-79 STYLE 1581 GLASS LOT 1457259-1 BMS 8-78 STYLE 120 GLASS LOT 1454844-1 & BMS 5-129 GR5 ADHESIVE LOT 1457270-4. FABRICATED REPAIR PLIES .<BR>LAID UP THE REPAIR ;VACUUM BAGGED ;LEAK CHECKED & SET TO CURE IAW SRM 51-70-05-2R-6 PARA 4 STEPS E & F .; [05] USING CALL TOOL HOT BONDER ID NCX000526 SN 12051216 .<BR>CURED THEN EXAMINED THE REPAIR IAW SRM 51-70-05-2R-6<BR>PARA 4 STEP G .; [06] VERIFIED CORRECTIVE ACTIONS 4 AND 5 PER SRM 51-70-05-2R-6; [07] POST REPAIR UT INSPECTED PER 737NDT PART 4 51-00-02. NO DEFECTS FOUND. CAL ID ATS2342 S/N 190848504; [08] REFINISHED IAW SRM 51-70-05-2R-6.PARA 4.I.; [09] FINAL INSPECTION. JOB COMPLETE PER SRM 51-70-05-2R-6

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