SDR ALGA2012042603

Service difficulty report · Blower · Bell 407

Difficulty date: April 26, 2012
Submitted: May 1, 2012
Operation: Air carrier
Aircraft: N404AL
Make and model: Bell 407
Aircraft serial: 53479
Aircraft time: 13,732 hours
System (JASC): 6500 · Tail Rotor Drive System
Part: Blower
Part number: 407040303119
Part serial: A283
Condition: Damaged
Location: Oil Cooler
Part time: 13,732 hours
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

DURING COURSE OF REPAIR TO OIL COOLER BLOWER ASSY, FOUND AND REPLACED ONE SHAFT (407-040-320-103, SN A-3283), BEARING JOURNAL WORN BEYOND LIMITS. TWO NUTS (90-118-4) DAMAGED BEYOND LIMITS. ONE SHIELD (407-040-328-101) DAMAGED BEYOND LIMITS, ONE BEARING (407-340-339-107, SN ZS28969) LOOSE ON SHAFT.

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