Service difficulty report · Pulley · Boeing 73776Q

Difficulty date
April 12, 2023
Submitted
May 9, 2023
Operation
Air carrier
Aircraft
N551WN
Make and model
Boeing 73776Q
Aircraft serial
30280
Aircraft time
66,624 hours, 41,198 cycles
Part
Pulley
Condition
Cracked
Location
Zn 100 Fus Lower
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

CRACK ON ST B PULLEY ATTACH ANGLE AT BS 1040 RBL 8 ABOVE STRINGER 25R.(MARKED)<[01] VERIFIED APPLICABILITY FOR SRM 51-10-02 PARAG. 9; REPAIRABLE BY REPLACEMENT.;[02] REMOVED STB PULLEY ATTACH CLIP AT BS 1040 RBL 8 ABOVE STRINGER 25R PER SRM 51-40-02.;[03] FABRICATED NEW CLIP FROM LOT # 1517370-1 2024-T3 0.063'; LOCATED AND DRILLED PER SRM 51-40-05 AND DWG 251A4921 REV A.;[04] VERIFIED CORRECTIVE ACTION 3 AND THE MEASUREMENT TABLE.;[05] RECEIVED CLIP FROM O.S.S. ITEM HFAB53-CL-002 PO# 915446/1; OK TO PRIME.;[06] VERIFIED CORRECTIVE ACTION 5.<BR>OK TO PRIME;[07] APPLIED PRIMER ON CLIP IAW AMM 51-21-99 OK TO INSTALL.;[08] VERIFIED CORRECTIVE ACTION 7. OK TO INSTALL.;[09] INSTALLED CLIP IAW SRM 51-40-02 AND DWG 251A3340;[10] VERIFIED CORRECTIVE ACTION #9

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