As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LDU / DCU SHOWING ERRONEOUS INDICATIONS IN FLIGHT SOME LIGHTS ARE INTERMITTENT AND SOME PERSIST. / INTERROGATED MDC, FOUND B1 CODE 007202. TROUBLESHOT PER FIM 31-41-07-810-801. REMOVED AND REPLACED LDU IAW CRJ 700 AMM 31-41-07-000/400-801. OPS CHECK GOOD AT THIS TIME.