Service difficulty report · Rib · Boeing 7377H4

Difficulty date
August 3, 2021
Submitted
August 19, 2021
Operation
Air carrier
Aircraft
N941WN
Make and model
Boeing 7377H4
Aircraft serial
36647
Aircraft time
39,425 hours, 23,903 cycles
Part
Rib
Condition
Cracked
Location
Horizontal Stab
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

L/H HORIZ STAB L/E RIB AT STA 272.62 FOUND CRACKED. ; / [01] STARTED REMOVING L/H HORIZ STAB LEADING EDGE RIB AT STA 272.62 IAW SRM 51-40-02; [02] REMOVED LH STAB LE RIB AT STA 272-62 IAW SRM 51-40-02-0G-0; [03] VERIFY NEW RIB AS P/N 186A1401-27 ATAG A70571 IAW DWG 186A1001 REV A; [04] VERIFIED STEPS 2 AND 3; [05] LOCATED AND DRILLED NEW RIB IAW SRM 51-40-05-0G-0; DWG 186A1001 REV A; [06] CW STEP 5<BR>OK TO INSTALL; [07] INSTALLED NEW RIB IAW SRM 51-40-02-0G-0; DWG 186A1001 REV A; [08] REMOVED AND REPLACED LH HORIZONTAL STAB REMOVABLE LE RIB AT STA 272.60 IAW SRM 51-40-02-0G-0; DWG 186A1001 REV A. RESTORED CIC IAW AMM 51-21-91; [09] CW STEPS7AND8<BR>AUDIT CW

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