Service difficulty report · Support · 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
Support
Condition
Corroded
Location
Bs 986 Lbl22
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 SUPPORT BS 986+9 LBL 22 WL 208 ; / [01] REMOVED CORROSION FROM BS 986+9 LBL 22 WL208 IAW SRM 51-10-02-0G-0. REMOVED AMOUNT 1'X1'X 0.045' . ORIGINAL THICKNESS OF MATERIAL 0.080' DUE TO NO LIMITS IN SRM ; SUPPORT FOUND TO BE OUT OF LIMITS. SUPPORT WILL BE REPLACED BY NEW SUPPORT.; [02] VERIFIED; [03] VERIFIED CORROSION OUT OF LIMITS; [04] REMOVED INTERCOSTAL BS986-BS1006 LBL22 WL208 I.A.W SRM 51-40-02-0G-0; [05] LOCATED AND DRILLED NEW INTERCOSTAL BS986-BS1006 LBL22 WL208 I.A.W SRM 51-40-05-0G-0 AND BOEING DWG 147A5600 OK TO INSTALL; [06] INSPECTED LOCATED AND DRILLED NEW INTERCOSTAL BS986-BS1006 LBL22 WL208 I.A.W SRM 51-40-05-0G-0 AND BOEING DWG 147A5600 OK TO INSTALL; [07] INSTALLED NEW INTERCOSTAL BS986-BS1006 LBL22 WL208 I.A.W SRM 51-40-02-0G-0 AND BOEING DWG 147A5600; [08] RII INSPECTED INSTALLED NEW INTERCOSTAL BS986-BS1006 LBL22 WL208 I.A.W SRM 51-40-02-0G-0 AND BOEING DWG 147A5600; [09] INSPECTION COMPLETE; [10] UPDATED CORRODED ELEMENT PART NUMBER IN MEASUREMENTS TABLE.; [11] CERTIFIED UPDATED CORRODED ELEMENT PART NUMBER IN MEASUREMENTS TABLE.

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