SDR 96ZZZX107

Service difficulty report · Bulkhead · Bell 412

Difficulty date: November 14, 1995
Submitted: March 26, 2000
Operation: General aviation
Aircraft: N2071C
Make and model: Bell 412
Aircraft serial: 33042
System (JASC): 5312 · Fuselage Main, Bulkhead
Part: Bulkhead
Part number: 205032827013
Condition: Cracked
Location: T/B Sta 163
Stage of operation: IN
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

AFTER LOCATING AND DRILLING BULKHEAD, A CRACK AT THE WELD POINT WAS FOUND. (THERE IS NOT SUPPOSED TO BE A SHRINKAGE LINE ON PART.) CRACKED AT FORMING (SHRINKAGE) LINE. THESE PARTS HAVE PILOT HOLES, THEN FORMED AFTER, AS CAN BE SEEN ON PILOT HOLES ON LOWER FLANGE.

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