Service difficulty report · Support · Boeing 7377H4

Difficulty date
September 13, 2021
Submitted
October 4, 2021
Operation
Air carrier
Aircraft
N967WN
Make and model
Boeing 7377H4
Aircraft serial
36967
Aircraft time
33,104 hours, 20,101 cycles
Part
Support
Part number
146A75011
Condition
Corroded
Location
Aft Cargo Bay
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 AFT CARGO BAY FLOOR TO SIDEWALL SUPPORT AT B.S. 747-827; L.B.L. 22; W.L. 154. ; / [01] REMOVED CORROSION FROM ACB FLOOR TO SIDEWALL SUPPORT BS 847-827; LBL 22 MATERIAL LOSS MORE THAN 20% FOUND TO BE OUT OF LIMIT PER SRM 53-00-53-1A-2; FIG 103 DETAIL E.; [02] REMOVED CORROSION FROM ACB FLOOR TO SIDEWALL SUPPORT BS 747-827; LBL 22 MATERIAL LOSS MORE THAN 20% FOUND TO BE OUT OF LIMIT PER SRM 53-00-53-1A-2; FIG 103 DETAIL E.; [03] VERIFIED CORRECTIVE ACTION ITEM 2.; [04] WORK WILL BE ACCOMPLISHED ON CUSTOMER CARD NBR: TTG8Q006HSU2; [05] PART WILL BE REPLACED ON CUSTOMER CARD NBR: TTG8Q006HSU2; [06] VERIFIED ALL STEPS COMPLETE.

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