Service difficulty report · Baffle · Boeing 7377H4

Difficulty date
April 6, 2022
Submitted
May 3, 2022
Operation
Air carrier
Aircraft
N424WN
Make and model
Boeing 7377H4
Aircraft serial
29828
Aircraft time
66,349 hours, 39,132 cycles
Part
Baffle
Part number
143A751012
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 RH BAFFLE BETWEEN BS500A AND BS500B FOUND CRACKED APPRX RBL 23 / REMOVED DAMAGE BAFFLE AT FWD CARGO RH BS 500A TO BS 500B RBL 23 PER REF B737 SRM 51-40-02-0G-0;RECEIVED NEW BAFFLE PN 143A7510-12; WILL BE MODIFIED PER SRM 53-30-53-2R-1 TO ACCOMMODATE WIRE HARDNESS.; REMOVED NUT PLATE FROM BAFFLE AND CUT A SLIT THROUGH ITS WEB FROM THE TOP FLANGE TO THE LIGHTNING HOLE PER REF B737 SRM 53-30-53-2R-1 FIG 202; PERFORMED HFEC ROTO INSP. OF ALL EXISTING FASTENER HOLES COMMON THE REPAIR AREA IAW B737 NDT PART 6; 51-00-00; PROCEDURE 16. NO CRACKS NOTED <BR>TOOL: NORTEC 600 B/C: 166316 DUE: 10/08/22<BR>TOOL: OLYMPUS MINIMITE B/C: 172542 DUE: 08/20/22;VERIFIED 1-3. ACCOMPLISHED GVI OF REPAIR AREA NO OTHER DEFECTS NOTED. 737-700 SRM 53-30-53-2R-1.;FABRICATED AND DRILLED NEW REPAIR ANGLE FROM 7075-T6 0.032' PER REF B737 SRM 53-30-53-2R-1 TABLE 201 AND FIG 202; APPLIED ALODINE AND PRIMER ON AREAS AS PER REF B737-700 SRM 51-20-01-0G-0 AND AMM 51-21-72-370-804;LOCATED AND DRILLED NEW BAFFLE AS PER REF B737-700 SRM 51-40-05-0G-0; INSTALLED NEW BAFFLE AT FWD CARGO RH BETWEEN STA 500A AND 500B RBL23 PER REF B737-700 SRM 51-40-02-0G-0 AND DWG#143A7505. INSTALLED DOUBLER REPAIR AT FWD CARGO RH BETWEEN STA 500A AND 500B RBL23 PER REF B737-700 SRM 53-30-53-2R-1; (RII)NSTALLED.REMOVED AND INSTALLED NEW BAFFLE AND REPAIR ANGLE AT FWD CARGO RH BETWEEN STA 500A AND 500B RBL23 PER REF B737-700 SRM 53-30-53-2R-1; SRM 51-40-02-0G-0 AND DWG#143A7505.

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