SDR QMLA2011021011023

Service difficulty report · Union · Snias AS350B2

Difficulty date: February 10, 2011
Submitted: February 10, 2011
Operation: Air carrier
Aircraft: N125LN
Make and model: Snias AS350B2
Aircraft serial: 4145
Aircraft time: 1,999 hours, 5,958 cycles
Engine: Tmeca ARRIEL1D1
Engine time: 1,856 hours, 4,292 cycles
System (JASC): 7310 · Engine Fuel Distribution
Part: Union
Condition: Loose
Location: Fuel System
Stage of operation: NR
How discovered: 9
Nature of condition: O
Precautionary procedure: O

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

What was found

THE MECHANIC INSTALLED MODULE. DURING INSTALLATION THE FUEL INLET UNION PIPE AND B-NUT, THE MECHANIC NOTICED THAT THE FUEL PRESSURE UNION MOVED. IT WAS IMMEDIATELY APPARENT THAT THIS UNION HAD NOT BEEN TORQUED. UPON A VISUL INSP OF THE UNION, THE CRUSH GASKET DID NOT APPEAR TO BE SEATED AND THE MOUNTING HARDWARE SHOWED ONLY A .5 THREAD COUNT. IAW THE CURRENT MM TASK FOR THE INSTALLATION OF THE UNION 72-43-00-900-805-B01. THE TASK REFERENCES THE STANDARD TORQUE FOR THE HARDWARE CONTAINED IN CHAPTER 70-41-00-850-801.