Service difficulty report · Baffle · Boeing 7377H4

Difficulty date
June 16, 2021
Submitted
June 30, 2021
Operation
Air carrier
Aircraft
N400WN
Make and model
Boeing 7377H4
Aircraft serial
27891
Aircraft time
66,325 hours, 39,077 cycles
Part
Baffle
Condition
Cracked
Location
Bs 500a-500b
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. BAFFLE BETWEEN STA 500A TRHU 500B STR.25L IS CRACKED ; / [01] REMOVED BAFFLE AS REF. B737-700 SRM 51-40-02-0G-0; [02] CUTED BAFFLE THROUGH ITS WEB FROM THE TOP FLANGE TO THE LIGHTING HOLE TO FACILITATE WIRE BUNDLE INSTALATION AS REF. B737-700 SRM 53-30-53-2R-1; [03] FABRICATED REPAIR ANGLE AS REF.B737-700 SRM 53-30-53-2R-1 MATERIAL USED 7075T6.032' PO#1644231; [04] VERIFIED STEPS#1; #2 AND #3.; [05] PERFORMED HFEC ROTO ON EXISTING FASTENER HOLES IN REPAIR ANGLE AND EXISITING FASTENER HOLE COMMON TO REPAIR AREA IAW NDTM PART 6;51-00-00 PROCEDURE 16.NO CRACKS.<BR>[NORTEC 600 ;B/C 166316]; [06] PERFORMED GENERAL VISUAL INSPECTION AT THE REPAIR AREA AND NO DEFECTS NOTED.; [07] OK TO INSTALL REPAIR; AND NEW BAFFLE.; [08] CORRECTING STEP # 7; OK TO TREAT AND PRIME REPAIR ANGLE.; [09] TREATED AND PRIMED REPAIR ANGLE PER B737-700 SRM 51-20-01-0G-0 AND AMM 51-21-72-370-804.; [10] VERIFIED THE TREAT AND PRIME OF REPAIR ANGLE PER B737-700 SRM 51-20-01-0G-0 AND AMM 51-21-72-370-804.; [11] OK TO INSTALL REPAIR ANGLE ON NEW BAFFLE AND OK TO INSTALL NEW BAFFLE.; [12] INSTALLED REPAIR ANGLE ON NEW BAFFLE TO FACILITATE WIRE BUNDLE INSTALLATION PER B737-700 SRM 53-30-53-2R-1 FIG 202 AND INSTALLED NEW BAFFLE BETWEEN STA 500A AND 500B LBL25 PER B737-700 SRM 51-40-02-0G-0 AND DWG # 143A7505

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