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
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 B.S. 270 LATERAL BEAM LBL 10 - RBL 10, WL 207.54. REMOVED CORROSION ON LATERAL BEAM LBL 10-RBL 10. AREAS BLENDED ARE 22' BY .850' ON TOP; 6' BY .850' ON UNDERSIDE LBL 3-RBL3; 7' BY .850'ON UNDERSIDE LBL 3- LBL 10; 4' BY .850' ON UNDERSIDE RBL 3-RBL7, 1' BY .850' ON UNDERSIDE RBL 9-RBL 10 IAW SRM 51-10-02-0G-0. ACCOMPLISHED HFEC INSPECTION IAW D6-37239 PART 6 51-00-00 PROC 16 AND 53-30-00 PROC 3. NO CRACKS FOUND. FOUND LATERAL BEAM STA 270 AT LBL 10-RBL 10; WL 207.54 NO APPLICABLE ALLOWABLE DAMAGE, COMPLETED ALL REPAIR STEPS ON FAULT TTG8Q009RVUD WHERE EA M-21-153-00277 IS ATTACHED.

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