SDR SWAA2025120430196

Service difficulty report · Rib · Boeing 7377H4

Difficulty date: October 30, 2025
Submitted: December 4, 2025
Operation: Air carrier
Aircraft: N231WN
Make and model: Boeing 7377H4
Aircraft serial: 32499
Aircraft time: 65,270 hours, 39,217 cycles
System (JASC): 5511 · Horizontal Stabilizer, Spar/Rib
Part: Rib
Condition: Cracked
Location: Zone 300
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

CRACKED INSPAR RIB, HSS 120.30 29 INCHES FROM SPAR, LT HORIZONTAL STAB. PERFORMED PERMANENT REPAIR ON INSPAR RIB LOCATED STAB STA 120.30 29 INCHES OF FROM SPAR LT HORIZONTAL STAB IAW B737-700 EA 25-155-03220-WIP1 SUMMARY EA 25-155-03220.

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