Service difficulty report · Hyd Pump · Boeing 747122

Difficulty date
November 17, 1997
Submitted
March 26, 2000
Operation
Air carrier
Aircraft
N854FT
Make and model
Boeing 747122
Aircraft serial
19754
Part
Hyd Pump
Part number
3508807
Condition
Cracked
Location
Nr 2 Engine
Stage of operation
CL
Nature of condition
K, J
Precautionary procedure
A, J

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

What was found

NR 2 HYD SYS FAILURE IN FLIGHT, HYD QTY WENT TO ZERO/LOW QTY LIGHT ON, ADP AND EDP LOW PRESS LIGHTS ON. FOUND CRACKED NR 2 EDP CASE. EDP BLANKING KIT INSTALLED IAW MM 29-11-05, MM 72-61-00. NO CONTAMINATION FOUND IN NR 2 SYS FILTERS. EDP CASE DRAIN FILTER REPLACED DUE TO SLIGHT METAL CONTAMINATION. SYSTEM FLUSHED, NIL FURTHER CONTAMINATION. LEAK CHECK OKAY PER MM 29-11-00.