SDR IPXA2026072764713

Service difficulty report · Gusset · Boeing 75724APF

Difficulty date: July 21, 2026
Submitted: July 27, 2026
Operation: Air carrier
Aircraft: N438UP
Make and model: Boeing 75724APF
Aircraft serial: 25469
Aircraft time: 31,943 hours, 20,896 cycles
System (JASC): 5510 · Horizontal Stabilizer Structure
Part: Gusset
Part number: 148N661478910
Condition: Corroded
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

AFT HORIZONAL STAB BS 1885 FWD FACE 311AL SERVICE DOOR TWO LATCH FITTINGS HAD EVIDENCE OF CORROSION. OUT OF LIMITS. INSTALLED 4 EA GUSSETS AT LBL 5, 2 EA & RBL 5, 2 EA FOR LATCH FITTING ASSY AT APU LOWER FIREWALL BS 1885.2 IAW 51-40-03-0G-0, PAR 4C, AND DWG 148N8402.

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