Service difficulty report · Diaphragm · Bell 407

Difficulty date
March 23, 2012
Submitted
March 27, 2012
Operation
Air carrier
Aircraft
N410AL
Make and model
Bell 407
Aircraft serial
53482
Aircraft time
1,944 hours
Engine
Allsn 250C47B
Part
Diaphragm
Part number
23062061
Part serial
MK264070
Condition
Backed Out
Location
Nr 1 Nozzle
Part time
24 hours
Component
Turbine
Component part number
23063354
Stage of operation
IN
How discovered
V
Nature of condition
O
Precautionary procedure
K

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

What was found

NR 1 NOZZLE DIAPHRAM BACKED OFF. INSTALLED NEW AT .835", CURRENT DIMENSION .802. FOUND TO BE CAUSE FOR LOW POWER.

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