SDR SWAA2020110224109

Service difficulty report · Rib · Boeing 7377H4

Difficulty date: October 17, 2020
Submitted: November 2, 2020
Operation: Air carrier
Aircraft: N268WN
Make and model: Boeing 7377H4
Aircraft serial: 32524
Aircraft time: 46,549 hours, 27,832 cycles
System (JASC): 5511 · Horizontal Stabilizer, Spar/Rib
Part: Rib
Part number: 186A1001
Condition: Cracked
Location: Horizontal Stab
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

LT HORIZONTAL STABILIZER LEADING EDGE PANEL RIB CHORD NR 4 CRACKED AT FASTENER. REMOVED AND REPLACED RIB CHORD NR 4 FOR LT HORIZONTAL LEADING EDGE PANEL, AS PER B737 SRM 51-40-02-0G-0 AND DWG, REF 186A1001. SEALANT SQUEEZE OUT VERIFICATION ACCOMPLISHED PRIOR TO SQUEEZE OUT FASTENER INSTALLATION, AS PER SOPM 20-50-19.

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