As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
SUSPICION OF BURNING ODOR IN MIDDLE OF ACFT BEFORE PUSHBACK. TRANSFERRED TO NRWC 501-ORD-02303, RMH 576717, REF NRWC 501-ORD-0229. R & R LIGHT BULBS IAW MM 33-21-01 FOUND GROUNDING TERMINAL LUG FOR CEILING LIGHT BALLAST 8AB LOOSE REINSTALLED TERMINAL LUG IAW MM 33-21-03. OPS CHECK GOOD IAW MM 33-21-00-710-801.