SDR IPXA2026081527200

Service difficulty report · Shaft · Boeing 76734AF

Difficulty date: August 5, 2026
Submitted: August 18, 2026
Operation: Air carrier
Aircraft: N331UP
Make and model: Boeing 76734AF
Aircraft serial: 27757
Aircraft time: 69,295 hours, 23,159 cycles
System (JASC): 2750 · Trailing Edge Flap Control System
Part: Shaft
Part number: 113T13413
Part serial: TAG336662A
Condition: Corroded
Location: Zone 500 Flap
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

FOUND LT WING OTBD FLAP NR 2 SUPPORT CRANK ARM AND INPUT SHAFT CORROSION. IAW AMM 27-51-21-024-001, REV 148, REMOVED LT WING NR 2 FLAP ACTUATOR CRANK ARM & INPUT SHAFT. IAW AMM 27-51-21-424-032, REV 148. INSTALLED LT WING NR 2 FLAP ACTUATOR CRANK ARM & INPUT SHAFT WITH NEW PARTS.

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