SDR SWAA2020092112227

Service difficulty report · Rib · Boeing 7377H4

Difficulty date: August 27, 2020
Submitted: September 21, 2020
Operation: Air carrier
Aircraft: N492WN
Make and model: Boeing 7377H4
Aircraft serial: 33866
Aircraft time: 55,155 hours, 32,453 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

LEFT HORIZ STAB APPROX 26 INCHES FROM INBOARD EDGE THE 3RD RIB HAS A CRACK AT LOWER AREA, MKD 78-7, LEADING EDGE. REMOVED & REPLACED RIB ASSY AT LT HORIZ STAB APPROX 26' FROM INBOARD EDGE 3RD RIB, PER B737-700 SRM 51-40-02-0G-0 DRWG NR 186A1001 & 186A1304.

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