SDR SWAA2025100609470

Service difficulty report · Rib · Boeing 7377H4

Difficulty date: August 28, 2025
Submitted: October 6, 2025
Operation: Air carrier
Aircraft: N901WN
Make and model: Boeing 7377H4
Aircraft serial: 32545
Aircraft time: 58,011 hours, 33,767 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

CRACK LEADING EDGE RIB ACCESS PANEL 341B LOCATED LE STA 114.55 AT RT HORIZONTAL STABILIZER. REPLACED RIB ON ACCESS PANEL 341B LOCATED LE STA 114.55 AT RT HORIZONTAL STABILIZER IAW SRM 51-10-02 PARAGRAPH 9; SRM 51-40-02; DRAWING 186A1305 SHEET 1, REV A, AND DRAWING 186A1001 SHEET 16, REV A.

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