Service difficulty report · Dnlock Actuator · Boeing 747122

Difficulty date
November 26, 1995
Submitted
March 26, 2000
Operation
Air carrier
Aircraft
N851FT
Make and model
Boeing 747122
Aircraft serial
19756
Part
Dnlock Actuator
Part number
65B825582
Condition
Failed
Location
Rt Mlg
Stage of operation
AP
Nature of condition
J, K
Precautionary procedure
O

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

What was found

NR 1 HYDRAULIC SYSTEM FAILED WHEN LANDING GEAR WAS EXTENDED, DURING FINAL APPROACH. DUE TO UNSAFE, UNCOMPLETED GEAR EXTENSION, ALT EXTENSION WAS COMPLETED WITH NO EFFECT. ACCOMPLISHED BODY GEAR NOT EXTENDED CHECKLIST AND LANDED WITHOUT FURTHER INCIDENT. RIGHT BODY GEAR DOWNLOCK ACTUATOR REMOVED AND REPLACED IAW MM 32-33-15 PG 401.