SDR CA030807001

Service difficulty report · B-Nut · Airbus A310

Difficulty date: July 19, 2003
Submitted: September 4, 2003
Operation: General aviation
Make and model: Airbus A310
Aircraft time: 40,481 hours
System (JASC): 2913 · Hydraulic Pump (Electric/Engine), Main
Part: B-Nut
Part number: 2244404523
Condition: Cracked
Location: Case Drain Line
Stage of operation: CR
How discovered: O
Nature of condition: K
Precautionary procedure: O

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

What was found

(CAN) DURING FLT, THE AIRCRAFT LOST THE B-HYDRAULIC FLUID SYSTEM. DURING INVESTIGATION THE B-NUT WAS FOUND CRACKED ON THE NR 1 ENGINE DRIVEN PUMP CASE DRAIN LINE. THE LINE ASSEMBLY WAS REPLACED, THE HYDRAULIC PUMP WAS REPLACED AS PRECAUTIONARY MEASURE AND THE GREEN HYDRAULIC SYSTEM FLUSHED.

More about the Airbus A310