Service difficulty report · Bracket · Boeing 7377H4

Difficulty date
September 20, 2022
Submitted
October 6, 2022
Operation
Air carrier
Aircraft
N205WN
Make and model
Boeing 7377H4
Aircraft serial
34010
Aircraft time
59,229 hours, 35,208 cycles
Part
Bracket
Condition
Cracked
Location
Fwd Cargo Bay
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

FWD CARGO COMP. AFT BULKHEAD RIGHT SIDE BETWEEN STA 500D THRU 520 STR 25R FOUND 1EACH SUPPORT BRACKET CRACKED / [01] FABRICATED FWD CARGO SUPPORT BRACKET BETWEEN STA 500D THRU STA 520; S-25R AS PER DWG 143A9803. MATERIAL USED 7075 O 0.032'; PO# 1734421;[02] LATE ENTRY. REMOVED FWD CARGO SUPPORT BRACKET BETWEEN STA 500D THRU STA 520; S-25R AS PER REF SRM 51-40-02-0G-0;[03] ENTRY #2 ABOVE /VERIFIED REMOVED ( CRACK ) SUPPORT BRKT. & ALL COMPONETS ATTACHED.;[04] VERIFIED STEP 1 - 3. OK TO HEAT TREAT FABRICATED PART.;[05] HEAT TREATED SUPPORT BRACKET AT FWD CARGO COM. RT SIDE BETS. STA 500D THRU 520 STR 25R FROM 7075-0.032' TO 7075-T62.032' CONDITION PER DRAWING 143A9803 AND BOEING BAC5602 PAGE 22; 25 AND 33;[06] VERIFIED STEP 5.;[07] LOCATED AND DRILLED NEW SUPPORT BRACKET AT FWD CARGO BETWEEN STA 500D T0 STA 520; STR.- 25R AS PER B737-700 SRM 51-40-05-0G-0.;[08] VALIDATED STEP 7<BR><BR>OK TO TREAT AND PRIME;[09] TREATED AND PRIMED NEW SUPPORT BRACKET AS PER B737-700 SRM 51-20-01-0G-0 AND AMM 51-21-72-370-804.;[10] VALIDATED STEP 9<BR><BR>OK TO INSTALL;[11] STARTED INSTALLED NEW SUPPORT BRACKET BETWEEN STA 500D THRU STA 520; S-25R AS PER SRM 51-40-02-0G-0.;[12] INSTALLED SUPPORT BRACKET AT FWD CARGO R/H BETWEEN STA 500D AND STA 520 AS PER REF STM 51-40-02-0G-0 AND DWG 143A7902;[13] VERIFIED STEP 12.

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