What was found
FLT 1016, JFK-, EXPERIENCED DUSTY/HAZY/BURNING ODOR IN CABIN ON TAKEOFF ROLL. ENTIRE CABIN HAZY, WARM RUSH OF AIR ON FLT DECK, LIGHTS ON FLT ATTENDANT WERE INOP. PERFORMED VISUAL INSPECTION OF NR 1 & 2 ENGINE BLEED AIR LINES. FOUND 1 BLANKING CAP MISSING FROM NR 1 ENGINE NAPRSOV. INSTALLED NEW BLANKING CAP PER AMM 36-11-031, NO OTHER DEFECTS FOUND ON NR 1 AND 2 ENGINE BLEED AIR LINES. PERFORMED VISUAL INSPECTION OF SPDA 1 PER AMM 24-61-01. NO DEFECTS NOTED, REMOVED ACCESS PANELS 191 EL AND 191 AR AND PERFORMED GENERAL VISUAL INSPECTION OF LT AND RT COOLING PACKS PER AMM 21-51-00. LEAK CHECK OF LT AND RT COOLING PACKS PER AMM 21-51-00, NO DEFECTS NOTED. REINSTALLED ACCESS PANELS 191 EL AND 191 AR PER AMM 06-41-00, PERFORMED IDLE ENGINE RUN ON LT AND RT ENGINES PER EMM 72-00-00-760-122, NO FAULTS NOTED. PERFORMED FIM PROCEDURES AS SPECIFIED IN FIM 21-20-00-810-801. UNABLE TO LOCATE OR DUPLICATE SMOKE OR ODOR ON A/C. CHECKED RECIRCULATION AIR FILTERS AMM 21-24-02, NO EVIDENCE OF CONTAMINATION FOUND, PERFORMED HI POWER ENG 1 & 2 RUN IAW EMM 71-00-00, OPERATED PACKS 1 & 2 WITH ONE ENGINE BLEED AT A TIME AND ONE PACK AT A TIME, NO ABNORMAL OPERATION OR ODOR NOTED. A/C OK TO CONTINUE SERVICE.