Service difficulty report · Floorbeam · Boeing 7377H4

Difficulty date
August 20, 2024
Submitted
September 5, 2024
Operation
Air carrier
Aircraft
N264LV
Make and model
Boeing 7377H4
Aircraft serial
32521
Aircraft time
58,531 hours, 35,077 cycles
Part
Floorbeam
Condition
Cracked
Location
Zone 100
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

REJECT - FLOOR BEAM REPAIR STRAP HAS 1EA OPEN COUNTERSUNK FASTENER HOLE @ BS294; RBL-37;WL-208. REPAIR ANGLE HAS 1EA HILOK W/O COLLAR; 1EA UNDERSIZED HILOK @ BS294; RBL-53; WL-207. (MARKED) (PICS)<[01] INSTALLED FASTENERS ON UPPER CHORD FLOOR BEAM 3EA PER SRM 53-10-51-2R-16 REP. 16 AND DWG 141A5502;[02] INSTALLED FASTENERS 3EA ON UPPER CHORD FLOOR BEAM BS 294.5 WL 208 BETWEEN RBL 25 TO RBL 60 PER SRM 53-10-51-2R-16 REP. 16 AND DWG 141A5502;[03] FIXED FASTENERS AT FLOOR BEAM REPAIR STRAP HAS 1EA OPEN COUNTERSUNK FASTENER HOLE @ BS294; RBL-37;WL-208. REPAIR ANGLE HAS 1EA HILOK W/O COLLAR; 1EA UNDERSIZED HILOK @ BS294; RBL-53; WL-207 PER SRM 53-10-51-2R-16 REP. 16 AND DWG 141A5502;[04] VERIFIED COMPLETION CORRECTIVE ACTION 3 AND MEASUREMENT TABLE.

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