Service difficulty report · Support Bracket · Boeing 7377H4

Difficulty date
July 21, 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 Bracket
Condition
Cracked
Location
Bs 686 Rbl1
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

CRACKED PULLEY SUPPORT BRACKET ANGLE BS 686+10 RBL 1 WL 207 ; / [01] REMOVED CRACKED PULLEY SUPPORT BRACKET PER SRM 51-40-02.; [02] FABRICATED NEW SUPPORT BRACKET FROM 2024TO#0.50 LOT # 1292371 MATERIAL PER DWG#273A9112; [03] FABRICATED NEW SUPPORT BRACKET FROM 7075T0#0.050 LOT # 1457313-101 MATERIAL PER DWG#273A9112; [04] VERIFIED THAT STEP 2 INCORRECT MATERIAL. STEP 3 VERIFIED AS CORRECT; [05] VERIFIED CORRECTIVE ACTION #3; [09] LOCATED AND DRILLED NEW SUPPORT BRACKET ANGLE PER SRM 51-40-05 AND DWG#273A9112. APPLIED CHEMICAL CONVERSION AND PRIMER PER SRM 51-20-02 AND AMM 51-21-72-370-804.; [10] LOCATED AND DRILLED NEW SUPPORT BRACKET ANGLE PER SRM 51-40-05 AND DWG#273A9112. APPLIED CHEMICAL CONVERSION AND PRIMER PER SRM 51-20-02 AND AMM 51-21-72-370-804.;

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