Service difficulty report · Rib · Boeing 7377H4

Difficulty date
September 29, 2022
Submitted
October 19, 2022
Operation
Air carrier
Aircraft
N786SW
Make and model
Boeing 7377H4
Aircraft serial
29811
Aircraft time
70,923 hours, 41,833 cycles
Part
Rib
Condition
Cracked
Location
Zn 300 Stabilize
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 HORIZONTAL STABILIZER LEADING EDGE; INTERNAL #5 RIB CRACK NOTED AT RIVET EDGE HOLE (DOT-223 LHLE5). / [01] REMOVED L/H HORIZONTAL STAB #5 RIB AS PER B737-700 SRM 51-40-02-0G-0;[02] LOCATED AND DRILLED NEW L/H HORIZONTAL STAB AS PER B737-700 SRM 51-40-05-0G-0;[03] REMOVED L/H HORIZONTAL STAB LEADING EDGE #5 RIB AS PER B737-700 SRM 51-40-02-0G-0;[04] LOCATED AND DRILLED NEW L/H HORIZONTAL STAB LEADING EDGE RIB AS PER B737-700 SRM 51-40-05-0G-0;[05] VALIDATED CORRECTED STATEMENTS 3 & 4<BR><BR>OK TO INSTALL NEW UNIT;[06] INSTALLED NEW L/H HORIZONTAL STAB LEADING EDGE #5 RIB AS PER B737-700 SRM 51-40-02-0G-0;[07] REMOVED L/H HORIZONTAL STAB LEADING EDGE #5 RIB AS PER B737-700 SRM 51-40-02-0G-0. LOCATED AND DRILLED NEW L/H HORIZONTAL STAB LEADING EDGE RIB AS PER B737-700 SRM 51-40-05-0G-0. INSTALLED NEW L/H HORIZONTAL STAB LEADING EDGE #5 RIB AS PER B737-700 SRM 51-40-02-0G-0.;[08] [FINAL] VALIDATED STEPS 6 & 7

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