SDR SWAA2026081990203

Service difficulty report · Seal · Boeing 7378

Difficulty date: July 13, 2026
Submitted: August 20, 2026
Operation: Air carrier
Aircraft: N8706W
Make and model: Boeing 7378
Aircraft serial: 42559
Aircraft time: 22,122 hours, 10,105 cycles
System (JASC): 5514 · Horizontal Stabilizer Miscellaneous Structure
Part: Seal
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

RIGHT HORIZONTAL STAB, FWD UPPER SLIDER SEAL WAS CRACKED. REMOVED THE CRACKED RT HORIZONTAL STAB FWD UPPER SLIDER SEAL IAW AMM 53-31-31. INSTALLED A NEW SLIDER SEAL IAW AMM 53-31-31 OPS AND CLEARANCE CHECK GOOD INSTALLED NEW FWD UPPER SLIDER SEAL IAW AMM 53-31-31, OPS AND CLEARANCE CHECK GOOD.

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