Service difficulty report · Floorbeam · Boeing 7378H4

Difficulty date
February 22, 2024
Submitted
March 12, 2024
Operation
Air carrier
Aircraft
N8683D
Make and model
Boeing 7378H4
Aircraft serial
36738
Aircraft time
26,980 hours, 13,191 cycles
Part
Floorbeam
Part number
UNKNOWN
Condition
Corroded
Location
Zn 100 Fus Lower
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

AFT GALLEY AREA; RH SIDE AT STA. 947 T-CAP HAS CORROSION AT VERY OUTBD SIDE NEXT TO INTERCOASTAL.<[01] PRIOR TO BLENDING; DAMAGE MEASURES .071' DEEP ON THE TRANSVERSE FLOOR BEAM ON STA. 947.5; UPPER FLANGE AT RBL 51'. MAXIMUM ALLOWABLE DAMAGE IS 15% OF MATERIAL THICKNESS. REMAINING THICKNESS IS .109'. DAMAGE IS OUT OF LIMITS PER SRM 53-70-51-1A-1.;;[08] RII- FABRICATED AND DRILLED FWD AND AFT REPAIR ANGLES AND STRAPS AT APPROXIMATELY LBL 8' PER SRM 53-70-51-2R-5; ALTERNATIVE 2. FABRICATED AND DRILLED FILLERS AT RBL 24'; RBL 36'; AND RBL 50' PER SRM 53-70-51-2R-5; ALTERNATIVE 2 AND EA 24-153-00538-WIP1 (TTG8Q00RT07R).;[12] FABRICATED REPAIR T-CHORD PER SRM 53-70-51-2R-5; ALTERNATIVE 2 AND EA EA 24-153-00538-WIP2.;[;[19] REPAIRED STA 947 FLOOR BEAM T-CAP PER SRM 53-70-51-2R-5; ALTENATIVE 2 AND EA 24-153-00538.;[20] RII INSPECTED AS REQUIRED. CORRECTIVE ACTION #19. <BR>REPAIRED STA 947 FLOOR BEAM T-CAP PER SRM 53-70-51-2R-5; ALTENATIVE 2 AND EA 24-153-00538.;[21] REPAIRED STA 947 FLOOR BEAM T-CAP PER SRM 53-70-51-2R-5; ALTENATIVE 2 AND EA 24-153-00538

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