Service difficulty report · None · Boeing 7377H4

Difficulty date
October 14, 2021
Submitted
November 1, 2021
Operation
Air carrier
Aircraft
N901WN
Make and model
Boeing 7377H4
Aircraft serial
32545
Aircraft time
46,086 hours, 26,832 cycles
Part
None
Condition
Corroded
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

FLT DECK; STA 259.5 TO 270; WL 207; FLOOR SUPPORT STRUCTURE HAS MULTIPLE AREAS OF CORROSION; MARKED. ; / [01] REMOVED CORROSION FROM FLOOR STRUCTURE IAW SRM 51-10-02-0G-0. VERIFIED WITH 10X MAGNIFICATION.; [02] VERIFIED LIMITS FOR CENTER SUPPORT CHANNEL; ORIGINAL THICKNESS .040' LOSS .006' REMAINING .034' OUT OF LIMITS IAW SRM 53-10-51-1A-1 FIGURE 105 DETAIL C.; [03] VERIFIED LIMITS FOR LATERAL FLOOR BEAM AT STA 270; ORIGINAL THICKNESS .050' LOSS .010' REMAINING .040' OUT OF LIMITS IAW SRM 53-10-51-1A-1 FIGURE 105 DETAIL C. <BR>TOOL# AAR-32351 CAL DUE 01/12/22; [04] VERIFIED STEPS 1 THRU 3; [05] REPAIR ACCOMPLISHED ON W/O TTG8Q006Z8ZD AND TTG8Q006ZAA9 IAW EA 21-153-03144-WIP1 AND EA 21-153-03144-WIP2.

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