SDR SWAA2023051725217

Service difficulty report · Seal · Boeing 7377H4

Difficulty date: April 9, 2023
Submitted: May 17, 2023
Operation: Air carrier
Aircraft: N958WN
Make and model: Boeing 7377H4
Aircraft serial: 36673
Aircraft time: 38,993 hours, 23,664 cycles
System (JASC): 5510 · Horizontal Stabilizer Structure
Part: Seal
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 FRONT SPAR ATTACH LUG UPPER SLIDE SEAL IS CRACKED<[01] REMOVED L/H HORIZ STAB FWD SPAR ATTACH LUG UPPER SLIDE SEAL IAW AMM 53-31-31-000-801. STEP 2.;[02] INSTALLED L/H HORIZ STAB FWD SPAR ATTACH LUG UPPER SLIDE SEAL IAW AMM 53-31-31-400-802. STEP 3. F.;[03] EDITED ITEM 2. INSTALLED L/H HORIZ STAB FWD SPAR ATTACH LUG UPPER SLIDE SEAL IAW AMM 53-31-31-400-801. STEP 3. D.;[04] VERIFIED CORRECTIVE ACTION 3

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