Service difficulty report · Support · Boeing 7377H4

Difficulty date
August 2, 2021
Submitted
September 15, 2021
Operation
Air carrier
Aircraft
N491WN
Make and model
Boeing 7377H4
Aircraft serial
33867
Aircraft time
53,758 hours, 31,898 cycles
Part
Support
Condition
Corroded
Location
Bs 727d-767
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 FLOOR TO SIDEWALL SUPPORT AT AFT CARGO BAY BS767 - BS727D RBL21 WL156. ; / [01] REMOVED CORROSION IN 1'X60' AREA REMOVED 0.015 FROM ORIG 0.040 FOUND TO BE OUT OF LIMITS PER SRM 53-00-53-1A-2 USING DIAL DEPTH GAUGE PART#ATS 2472 S/N UNKNOWN.; [02] VERIFIED CORRECTIVE ACTION ENTRY 1.; [03] REMOVED ACB RH FLOOR TO SIDEWALL SUPPORT; BS 727-767 RBL21; IAW SRM 51-40-02-0G-0; [04] LOCATED AND DRILLED NEW FLOOR TO SIDEWALL SUPPORT PER SRM 51-40-05 AND DWG 146A7500; [05] VERIFIED LOCATED AND DRILLED NEW FLOOR TO SIDEWALL SUPPORT PER SRM 51-40-05 AND DWG 146A7500; [06] APPLIED TOPCOAT AND CIC PER CUSTOMER CARD#TTG8Q004E7BQ. REQUEST OK TO INSTALL.; [07] INSPECTED AND VERIFIED CORRECTIVE ACTION ITEM 6. OKAY TO INSTALL FLOOR TO SIDEWALL SUPPORT.; [08] INSTALLED ACB FLOOR TO SIDEWALL SUPPORT BS 727 - 767; RBL 21; WL 156 IAW SRM 51-40-02; DWG#146A7500; DWG# 146A7502.; [09] FINAL INSPECTION. JOB COMPLETE PER SRM 51-40-02; DWG#146A7500; DWG# 146A7502.; [10] FINAL INSPECTION. JOB COMPLETE PER SRM 51-40-02; DWG#146A7500; DWG# 146A7502.; [11] FINAL INSPECTION. JOB COMPLETE PER SRM 51-40-02; DWG#146A7500; DWG# 146A7502.

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