What was found
DURING T/O AND CLIMB ELECTRICAL BURNING ODOR WAS NOTICED THROUGH COCKPIT AND CABIN, COULD NOT FIND SOURCE, ODOR WOULD DISSIPATE A LITTLE AND THEN RETURN. PERFORMED FIM TASK 21-00-00-810-806, INITIAL EVALUATION STEPS 1 THRU 14 AND APU BLEED FOR OIL CONTAMINATION STEPS 1 THRU 4. NO DEFECTS NOTED. PER AMM 72-00-00-200-800 AND ECRA 7223-01171 PERFORMED BOROSCOPE OF NR 1 AND NR 2 ENGINE HPC STAGES 1, 2, 3 AND NR 3 BEARING AFT AIR / OIL SEAL. NO EVIDENCE OF OIL LEAKAGE IN EITHER ENGINE FOUND. NO OTHER DEFECTS NOTED AT THIS TIME. RAN ENGINES AT VARIOUS SETTINGS, NO DEFECTS NOTED. OK TO CONTINUE.