SDR SWAA2020111627310

Service difficulty report · Crease Beam · Boeing 7377H4

Difficulty date: November 1, 2020
Submitted: November 16, 2020
Operation: Air carrier
Aircraft: N727SW
Make and model: Boeing 7377H4
Aircraft serial: 27859
Aircraft time: 73,855 hours, 43,794 cycles
System (JASC): 5310 · Fuselage Main, Structure
Part: Crease Beam
Part number: 144A5910
Condition: Corroded
Location: Fuselage
Stage of operation: IN
How discovered: V
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 CREASE BEAM INNER CORD BS 639 LBL 55 WL 208. REMOVED AND INSTALLED NEW CREASE BEAM INNER CHORD BS 532-675 LBL 55 WL 208, IAW BOEING DWGS 144A5910, 144A5901, 143A5240 AND SRM 51-40-02-0G-0 BS 639 LBL 55 WL 208 CREASE BEAM INNER CHORD CORROSION WAS FOUND TO BE OUT OF LIMITS, PER SRM 53-40-13-1A-1 56040C 07NOV20.

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