SDR SWAA2020062987809

Service difficulty report · Crease Beam · Boeing 7377H4

Difficulty date: May 28, 2020
Submitted: June 30, 2020
Operation: Air carrier
Aircraft: N928WN
Make and model: Boeing 7377H4
Aircraft serial: 36890
Aircraft time: 40,809 hours, 24,748 cycles
System (JASC): 5310 · Fuselage Main, Structure
Part: Crease Beam
Part number: 141A8110
Condition: Corroded
Location: Bs 303
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

CORROSION ON L1 CREASE BEAM VERTICAL FLANGE AT BS 303.9, LBL 56, WL 209. REMOVED AND REPLACED L1 CREASE BEAM FROM BS 270 - 360 IAW SRM 53-10-15-01, SRM 51-10-02-0G, SRM 53-10-15-1A, SRM 51-40-02-0G, DRAWING 141A8110, REV A, SRM 51-40-05-0G, AMM 51-21-91-620, AND AMM 20-60-02-100.

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