SDR 9722126306

Service difficulty report · Pump · Boeing 747451

Difficulty date
November 24, 1997
Submitted
March 26, 2000
Operation
Air carrier
Aircraft
N666US
Make and model
Boeing 747451
Aircraft serial
23821
Part
Pump
Condition
Failed
Location
Nr 1 Engine
Stage of operation
CR
Nature of condition
J
Precautionary procedure
A

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

What was found

DURING CRUISE, THE NR 1 ENGINE DRIVEN HYDRAULIC PUMP AND THE AIR DRIVEN HYDRAULIC PUMP FAILED. AIRCRAFT DIVERTED TO ANC AND LANDED WITHOUT INCIDENT. REPLACED THE NR 1 ENGINE DRIVEN AND AIR DRIVEN HYDRAULIC PUMPS. OPERATIONAL CHECK GOOD.