SDR C8GA20080002

Service difficulty report · Line · Boeing 727225

Difficulty date: January 7, 2008
Submitted: January 9, 2008
Operation: Air carrier
Aircraft: N755DH
Make and model: Boeing 727225
Aircraft serial: 21875
Aircraft time: 44,576 hours, 35,083 cycles
System (JASC): 2910 · Hydraulic System, Main
Part: Line
Part number: BACH8C08NN0290
Condition: Chafed
Location: Hyd System
Stage of operation: DE
How discovered: O
Nature of condition: K, J
Precautionary procedure: O

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

What was found

FLT 246 FROM EWR TO BDA. DURING DESCENT INTO BDA, THE NR 2 HYDRAULIC "B" SYSTEM PUMP LOW PRESSURE LIGHT ILLUMINATED FOLLOWED BY A PRESSURE DROP TO ZERO PSIG. THE AIRCRAFT LANDED WITHOUT INCIDENT. POST FIGHT INSPECTION REVEALED THAT THE PRESSURE AND RETURN LINES FROM THE RESERVOIR TO THE NR 2 "B" SYSTEM PUMP WERE CHAFED. REMOVED AND REPLACE BOTH PRESSURE AND RETURN LINES, SERVICED "B" HYDRAULIC SYSTEM, PERFORMED OPS AND LEAK CHECK. NO OTHER DEFECTS NOTED. AIRCRAFT WAS RETURNED TO SERVICE.