SDR SWAA2024100732999

Service difficulty report · Rib · Boeing 7377H4

Difficulty date: August 31, 2024
Submitted: October 7, 2024
Operation: Air carrier
Aircraft: N489WN
Make and model: Boeing 7377H4
Aircraft serial: 33855
Aircraft time: 63,611 hours, 38,095 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

R/H HRZ STB L/E (341B) LOWER AFT OF THE RIB #3 HAS A CRACK (228-001)<[01] ***SUMMARY*** REMOVED R/H HRZ STB L/E RIB #3 AS PER B-737 SRM 51-40-02-0G-0 LOCATED AND DRILLED NEW #3 RIB AS PER B-737 SRM 51-40-05-0G-0 INSTALLED NEW #3 RIB AT R/H HRZ STB L/E AS PER DWG 186A1303 & SRM 51-40-02-0G APPLIED SEALANT PN: 0870B002BM ON 09/04/2024 AT 10:00 PM SQUEEZE OUT TIME: 12:00 AM ON 09/05/2024;[02] VERIFIED STEP # 1

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