SDR SWAA2026021763574

Service difficulty report · Rib · Boeing 7377H4

Difficulty date: January 21, 2026
Submitted: February 17, 2026
Operation: Air carrier
Aircraft: N458WN
Make and model: Boeing 7377H4
Aircraft serial: 33857
Aircraft time: 72,334 hours, 43,392 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 331B LOCATED LE HSS 188.94 AT LT HORIZONTAL STAB. REPLACED RIB ON LEADING EDGE ACCESS PANEL 331B LOCATED LE HSS 188.94 AT LT HORIZONTAL STAB IAW SRM 51-40-02-01-0G-0, SRM 51-10-02-0G-0, PARAGRAPH 9, & DWG 186A1001 SHEET 10, REV A. LENGTH OF CRACK: 0.269 INCH.

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