SDR SWAA2021122250986

Service difficulty report · Beam · Boeing 7377H4

Difficulty date: December 7, 2021
Submitted: December 22, 2021
Operation: Air carrier
Aircraft: N910WN
Make and model: Boeing 7377H4
Aircraft serial: 36618
Aircraft time: 45,600 hours, 27,244 cycles
System (JASC): 5315 · Fuselage Main, Floor Beam
Part: Beam
Condition: Corroded
Location: 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

CORROSION ON BS 259-267 LONGITUDIANL BEAM LBL 10, WL 207.54. REMOVED CORROSION. AREA BLENDED IS 7.3' BY 1.6' ON UPPER SURFACE IAW SRM 51-10-02-0G-0. ACOOMPLISHED UT INSPECTION IAW NDTM D6-37239 PART 4 51-00-00 PROC 2; LOWEST REMAINING THICKNESS IS .049 ACCOMPLISHED HFEC IAW NDTM D6-37239 PART 6 51-00-00 PROC 16 AND 53-30-00 PROC 3. NO CRACKS FOUND. ACCOMPLISHED HFEC IAW NDTM D6-37239 PART 6 51-00-00 PROC 23. NO CRACKS. REPAIRED ON TTG8Q009PL5R.

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