SDR HEEA072616

Service difficulty report · Control Unit · Bell 412

Difficulty date: April 17, 2001
Submitted: May 7, 2001
Operation: General aviation
Aircraft: N108X
Make and model: Bell 412
Aircraft serial: 33115
Aircraft time: 14,777 hours
System (JASC): 3452 · ATC Transponder System
Part: Control Unit
Part number: 071119208
Part serial: R3890
Condition: Malfunctioned
Location: Cockpit
Stage of operation: IN
How discovered: C
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

DISPLAY BLANKS OUT WHEN CHANGING DIGITS. PERFORMED PRELIMINARY INSPECTION AND REPLACED DISPLAY LENS AND I203, I204, I205 AND I206 IC CHIPS. NO HELP. FOUND J303 FLEX CABLE BAD. REPLACED J303 CABLE, I303 IC CHIP, I306 IC CHIP AND I202 IC CHIP. NO HELP.

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