SDR EVCA00017

Service difficulty report · Shaft · Bell 206L4

Difficulty date
August 10, 2011
Submitted
August 11, 2011
Operation
Air carrier
Aircraft
N325AE
Make and model
Bell 206L4
Aircraft serial
52009
Aircraft time
5,651 hours, 31,292 cycles
Part
Shaft
Part number
5D4407
Condition
Sheared
Location
Tach Generator
Part time
5,651 hours, 31,292 cycles
Component
Tach Generator · Bell
Component part number
206076373001
Stage of operation
NR
How discovered
O
Nature of condition
F, G
Precautionary procedure
A

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

What was found

THE DRIVE ADAPTOR SPLINE CONNECTION BETWEEN THE ROTOR TACH GENERATOR AND THE TRANSMISSION OIL PUMP SHEARED, RESULTING IN LOSS OF HYD PRESSURE AND ROTOR SPEED INDICATION.

More about the Bell 206L-4