What was found
APU WILL NOT START. ATTEMPTED START NO HELP, APU DOOR OPENS AND CLOSES BUT NO LIGHT. REPLACED ECU. A CCOMPLISHED SUCCESSIVE STARTS AND OPERATIONAL CHECKS GOOD.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
APU WILL NOT START. ATTEMPTED START NO HELP, APU DOOR OPENS AND CLOSES BUT NO LIGHT. REPLACED ECU. A CCOMPLISHED SUCCESSIVE STARTS AND OPERATIONAL CHECKS GOOD.