SDR G1IA20241015072

Service difficulty report · Dpu · Beech C90A

Difficulty date: October 15, 2024
Submitted: October 22, 2024
Operation: Air carrier
Aircraft: N597P
Make and model: Beech C90A
Aircraft serial: LJ1597
Aircraft time: 8,811 hours, 10,808 cycles
System (JASC): 3460 · Flight Management Computing Hardware System
Part: Dpu
Part number: 6229682004
Part serial: 330
Condition: Intermittent
Location: Zone 200
Part time: 276 hours, 293 cycles
Stage of operation: CL
How discovered: O
Nature of condition: J
Precautionary procedure: A

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

What was found

DISCREPANCY: SHORTLY AFTER TAKE OFF DPU FAIL INDICATION DISPLAYED ON BOTH EFIS SCREENS, THEN A FEW SECONDS LATER BOTH SCREENS WENT COMPLETELY BLANK EXCEPT FOR DPU FAIL MESSAGE. ABOUT TEN SECONDS LATER THE FAILURE INDICATIONS RESOLVED. CORRECTIVE ACTION: REMOVED DPU AND CLEANED CONNECTORS, OPS CHECK SATISFACTORY.

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