NONE · Piper PA31 · 2020-01-12 · Fairbanks, AK, USA
Event
NTSB number
ANC20LA013
Event ID
20200113X34716
Type
Accident
Date
2020-01-12
Location
Fairbanks, AK, USA
Coordinates
64.811668, -147.86972
Injuries
Highest injury
NONE
Fatal
0
Serious
0
Minor
0
Uninjured
9
Total aboard
9
Aircraft
Make
Piper
Model
PA31
Registration
N4112K
FAR Part
135
Engines
2
Damage
SUBS
Conditions
Light
DAYL
Weather
VMC
Probable cause
The improper installation of a hydraulic line at the right main landing gear (MLG) unlock actuator, which resulted in a total loss of system hydraulic pressure and failure of the landing gear to extend. Contributing to the accident was the failure of the right MLG shuttle valve due to corrosion, which prevented the right MLG from extending during the emergency blowdown activation.