SDR EIAA20111228264

Service difficulty report · Line · Boeing 747273C

Difficulty date: December 28, 2011
Submitted: December 28, 2011
Operation: Air carrier
Aircraft: N471EV
Make and model: Boeing 747273C
Aircraft serial: 20651
System (JASC): 2910 · Hydraulic System, Main
Part: Line
Condition: Leaking
Location: Hyd System
Stage of operation: NR
How discovered: O
Nature of condition: K, J
Precautionary procedure: A

As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.

What was found

TOTAL LOSS OF NR 4 HYDRAULIC SYSTEM AND GROUND SAFETY RELAY LIGHT ILLUMINATED, MULTIPLE GEAR TILT ISSUES, AURAL WARNING, AND LANDING GEAR LEVER LOCK ENGAGED. REMOVED SLAT SEAL AND PANEL ON PYLON FOUND HYDRAULIC LINE CRACKED AT ANGLE SECTION BY B-NUT IAW 71-11-10. REPLACED NR 4 PYLON HYD LINE PER 29-11-00. INSTALLED SEAL AND PANEL ON PYLON. SERVICED NR 4 HYD RESERVOIR PER 12-11-00.