SDR ERAA098186

Service difficulty report · Blade · Bell 412

Difficulty date: October 9, 2004
Submitted: December 6, 2004
Operation: Air carrier
Aircraft: N421EH
Make and model: Bell 412
Aircraft serial: 33067
Aircraft time: 14,966 hours
System (JASC): 6410 · Tail Rotor Blades
Part: Blade
Condition: Vibration
Location: Tail Rotor
Stage of operation: NR
How discovered: 9
Nature of condition: O
Precautionary procedure: O

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

What was found

VIBRATION AFTER 3 DAYS OF HEAVY RAIN. NO BALANCE WEIGHTS ON BALANCE BRACKETS. REMOVED T/R BLADE A-10206 AND SENT TO CTI FOR EVALUATION. REMOVED T/R BLADES, VISUALLY INSPECTED ALL COMPONENTS, INSTALLED SERVICEABLE T/R BLADES, LUBED TRUNNION, MARVEL BALANCED, TORQUED AND SAFTIED IAW 412 CR/O.

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