Service difficulty report · Bracket · Boeing 7377H4

Difficulty date
July 28, 2021
Submitted
September 14, 2021
Operation
Air carrier
Aircraft
N446WN
Make and model
Boeing 7377H4
Aircraft serial
29842
Aircraft time
58,476 hours, 34,391 cycles
Part
Bracket
Condition
Cracked
Location
Bs 550c S25l
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 BRACKET STRINGER 25L FWD SIDE OF BSTA 550C AT FWD CARGO COMPARTMENT ; 2021-342131 / [01] REMOVED BRACKET ON STRINGER 25L FWD SIDE OF BSTA 500C AT FWD CARGO COMPARTMENT IAW B737-700 SRM 51-40 02 AND PERFORMED VISUAL INSPECTION AND NOT FOUND MORE DAMAGE; [02] REMOVED BRACKET ON STRINGER 25L FWD SIDE OF BSTA 500C AT FWD CARGO COMPARTMENT IAW B737-700 SRM 51-40 02 AND PERFORMED VISUAL INSPECTION AND NOT FOUND MORE DAMAGE. VERIFIED STEP 1 COMPLETE.; [03] DRILLED NEW BRACKET STRINGER 25L FWD SIDE OF BSTA 500 AT FWD CARGO COMPARTMENT IAW B737-700 SRM 51-40-05; [04] DRILLED NEW BRACKET STRINGER 25L FWD SIDE OF BSTA 500C AT FWD CARGO COMPARTMENT IAW B737-700 SRM 51-40-05. CORRECTED STA 500C.; [05] RII STEP 4 COMPLETED.; [06] APPLIED PROTECTIVE TREATMENT ON NEW HOLES BRACKET LOCATED BS 500C STR 25L FWD CARGO COMPARTMENT IAW B737-700 SRM 51-20-01; [07] VERIFIED STEP 6 COMPLETE; [08] OK TO INSTALL NEW BRACKET STRINGER 25L FWD SIDE OF BSTA 500C AT FWD CARGO COMPARTMENT; [09] STEP 8. OK TO INSTALL; GRANTED. ITEM RII; [10] INSTALLED BRACKET LOCATED AT STRINGER 25L FWD SIDE OF BSTA 500C AT FWD CARGO COMPARTMENT IAW B 737-700 SRM 51-40-02 DWG 143A7505 REV B; [11] REPLACED BRACKET LOCATED AT STRINGER 25L FWD SIDE OF BSTA 500C AT FWD CARGO COMPARTMENT IAW B737-700 SRM 51-10-02 ; SRM 51-40-02 DWG 143A7505 REV B; [12] STEP 10 Y 11 COMPLETE. RII

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