What was found
DURING INITIAL CLIMBOUT SUDDENLY GOT A VERY STRONG BURNING ODOR. PAX WERE COMPLAINING ABOUT EYE IRRITATION. NO VISIBLE SMOKE SIGNS. INITIATED AIR RETURN. INSTALLED NEW END UNION PACKING ON AUX PUMP LEAK, CHECK OK MM 29-01-05. REMOVED AND REPLACED COALESCER SOCKS, OPS CHECK OK MM 21-20-02. HYDRAULIC SYSTEM INDICATES 4 QUARTS (NR 1/LEFT) SYSTEM. SECURED LOOSE B-NUT AT TRANSFER PUMP AND SERVICED SYSTEM TO FULL, NO LEAKS NOTED MM 29-00-00.