Service difficulty report · Floorbeam · Boeing 737*

Difficulty date
February 7, 2022
Submitted
March 2, 2022
Operation
Air carrier
Aircraft
N469WN
Make and model
Boeing 737*
Aircraft serial
33859
Aircraft time
59,572 hours, 35,384 cycles
Part
Floorbeam
Condition
Cracked
Location
Fwd Fuselage
Stage of operation
UK
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

328 FLOORBEAM IS CRACKED ON UPPER CHORD COMMON TO FWD FASTENER HOLE; RBL 21; WL 208. / [01] UPDATED TABLE;[12] FABRICATED REPAIR PARTS ITEM 1 T-CHORD(1EA) FROM BAC1505-100224 7050-T76511 LOT #5070057-1;ITEM 2 ANGLE(2EA)FROM BAC1490-2811 7075T62 LOT #1453731-1;ITEM 3 ANGLE(2EA)FROM BAC1490-2900 7075T62 LOT # 5072759-4;ITEM 4 SHIM(9EA)FROM 2024T3 .100'B LOT#1437054-1;ITEM 5 ANGLE(1EA)FROM BAC1490-2651 7075-T6 LOT#1376388-2 AND ITEM 6 FILLER (3EA)FROM 7075T6 0.020 LOT#1472548-1 ALL I.A.W SRM 53-10-51-2R-7 REPAIR 7 PAR 4.H-M;[13] FABRICATED REPAIR PARTS ITEM 4 SHIM (1EA)FROM 7075T6 C. 0.071'LOT #1459410-1;PART ITEM 4 SHIM(1EA)FROM 7075T6 C. 0.080'LOT # 1379745-2 ALL I.A.W SRM 53-10-51-2R-7 REPAIR 7 PAR 4.H-M;[20] INSTALLED REPAIR PARTS ITEM 1 T-CHORD(1EA) ;ITEM 2 ANGLE(2EA);ITEM 3 ANGLE(2EA);ITEM 4 SHIM(11EA);ITEM 5 ANGLE(1EA);ITEM 6 FILLER (3EA);STIFFENERS BS328 BL0(1EA);RBL8(1EA);RBL15(1EA);RBL23(1EA);RBL34(1EA);RBL45(1EA) RBL55 AND INTERCOSTAL BS328-BS344 RBL25 WL208-WL200 ALL I.A.W SRM 53-10-51-2R-7 REPAIR 7 PAR 4.O-S;[21] INSTALLED FLOOR SUPPORTS BS312-BS328 RBL11;RBL34 WL208 AND FASTENER ON AND ADJACENT TO THE REPAIR I.A.W SRM 53-10-51-2R-7 REPAIR 7 PAR 4.S AND SRM 51-40-02-0G-0 COMPLETED ALL REPAIR PROCESS I.A.W SRM 53-10-51-2R-7 REPAIR 7 ALTERNATIVE 2;