Service difficulty report · Floorbeam · Boeing 737752

Difficulty date
August 13, 2023
Submitted
September 6, 2023
Operation
Air carrier
Aircraft
N7886A
Make and model
Boeing 737752
Aircraft serial
35122
Aircraft time
52,212 hours, 27,316 cycles
Part
Floorbeam
Part number
UNKNOWN
Condition
Corroded
Location
Zn 200 Fus Top
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

FLOOR BEAM AT BS 986 LBL 25-45 HAS MULTIPLE AREAS OF CORROSION< REMOVED CORROSION FROM FLOOR BEAM AT BS 986.5 WL 208 BLEND OUT AREAS MEASURE: LBL 44: L: 2.5' W: 1.2' REMAINING THICKNESS: .104' ORIGINAL THICKNESS .150'; FOUND FLOOR BEAM TO BE OUT LIMITS PER SRM 53-70-51-1A-1 PAR. 4. H. (2)(B) FIGURE 103. DETAILS A; B; C; E; F; G; H AND N. USED TOOL ID: IS000459 DUE DATE: 02/29/24.<BR>FABRICATED AND INSTALLED REPAIR PARTS [1] 1EA T-CHORD MADE FROM BAC1505-101474 7050-T76511 LOT: 1505572-11; [2] ANGLE 2EA MADE FROM BAC1490-2887 7075-T6 LOT: 1505568-1; [3] ANGLE 2EA MADE FROM BAC1490-2887 7075-T6 LOT: 1523264-1 AND [4] STRAP 2EA MADE FROM 7075-T6#0.080 LOT: 1492623-1 IAW EA 23-153-02524 AND SRM 53-70-51-2R-4 PAR. 4. G. H. I. J. AND K.;[35] VERIFIED REPAIR PERFORMED PER CORRECTIVE ACTION ITEM 34. FAULT COMPLETE. MEASUREMENT TABLE COMPLETE.