SDR CA031204001

Service difficulty report · Symbol Generator · Doug DC983

Difficulty date: November 21, 2003
Submitted: January 5, 2004
Operation: General aviation
Make and model: Doug DC983
Aircraft time: 13,282 hours
Engine: Pwa JT8D219
System (JASC): 3425 · Integrated Flight System
Part: Symbol Generator
Condition: Failed
Location: Flt Computer
Stage of operation: DE
How discovered: O
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

(CAN) CAPTAIN EADI AND EHSI WENT BLANK TWICE DURING DESCENT AND APPROACH. EACH TIME THEY STAYED OFF FOR ABOUT 5-10 SECONDS, THEN CAME BACK ON. SYMBOL GENERATOR NR 1 SWAPPED WITH NR 2 AND COULD NOT DUPLICATE SNAG ON GROUND. AIRCRAFT DISPATCHED SERVICEABLE. SUSPECT PROBLEM RELATED WITH BAD VENTILATION. FOUND HSI AND ADI SCREEN PACKED WITH DUST.

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