Service difficulty report · Channel · Boeing 7377H4

Difficulty date
July 15, 2021
Submitted
August 18, 2021
Operation
Air carrier
Aircraft
N444WN
Make and model
Boeing 7377H4
Aircraft serial
29839
Aircraft time
61,121 hours, 35,983 cycles
Part
Channel
Condition
Corroded
Location
Bs 947-987
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 MOPSILL AT ASD BS 947-987 RBL 50 WL 208 ; / [01] REMOVED CORROSION ON MOPSILL BS 983-984 RBL 50 WL 208 PER SRM 51-10-02-0G-0. REMOVED AMOUNT 1X1X .014 ORIGINAL THICKNESS .080. FOUND TO BE OUT OF LIMITS PER SRM 53-70-15-1A-1-A00707. DIAL DEPTH GUAGE ID:ATS1225 07/2022 DUE DATE NEXT CALIBRATION.; [02] VERIFIED; [03] VERIFIED - REMOVED CORROSION ON MOPSILL BS 983-984 RBL 50 WL 208 PER SRM 51-10-02-0G-0. REMOVED AMOUNT 1X1X .014 ORIGINAL THICKNESS .080. FOUND TO BE OUT OF LIMITS PER SRM 53-70-15-1A-1-A00707. DIAL DEPTH GUAGE ID:ATS1225 07/2022 DUE DATE NEXT CALIBRATION.; [04] REMOVED ASD MOPSILL PER SRM 51-40-02.; [05] VERIFIED REMOVAL OF ASD MOPSILL PER SRM 51-40-02.; [06] UPDATED MEASUREMENT TABLE; [07] LOCATED AND DRILLED NEW ASD MOPSILL BS887+10 - BS1006 RBL50 WL208 IAW SRM 51-40-05-0G-0 AND DWG 147A8501; OK TO INSTALL; [08] VERIFIED LOCATE AND DRILL UP OF NEW MOPSILL; OK TO INSTALL.; [09] 100% TEMP OR PERMANENT FASTENERS INSTALLED WITHIN SEALANT SQUEEZE OUT TIME REF SOPM 20-50-39; [10] VERIFIED CORRECTIVE ACTION ITEM 9; 100% TEMP OR PERMANENT FASTENERS INSTALLED WITHIN SEALANT SQUEEZE OUT TIME REF SOPM 20-50-39; [11] INSTALLED FASTENERS IN MOPSILL BS 986 TO 1008 PER SRM 51-40-02-0G-0 AND DWG 147A0000.; [12] RII INSPECTED INSTALLED FASTENERS IN MOPSILL BS 986 TO 1008 PER SRM 51-40-02-0G-0 AND DWG 147A0000.; [13] INSTALLED ASD MOPSILL PER SRM 51-40-02-0G-0 AND DWG 147A8501.; [14] RII INSPECTED INSTALLED ASD MOPSILL PER SRM 51-40-02-0G-0 AND DWG 147A8501.

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