What was found
AFTER TAKEOFF THE NOSE WHEEL WAS GROWLING &VIBRATING. AFTER GEAR & FLAP RETRACTION, GEAR WARNING HORN ACTIVATED & NO TAKEOFF ANNUNCIATOR ILLUMINATED. CABIN CLIMBING AT ACFT CLIMB RATE OF 4000 FT/MIN UNTIL LEVEL OFF AT 3000 FT. ONLY NO TAKEOFF ANNUNCIATOR ILLUMINATED, NO HYD PRESS ANNUNCIATOR. AT BEGINNG DESCENT, CABIN DESCENDING AT ACFT RATE OF 1000 FT/MIN. GEAR WARNING CONTINUED UNTIL LOWERING GEAR. QRH PROCEDURE FOR NO TAKEOFF ANNUNCIATOR WAS ACCOMPLISHED IN FLT. ADJUSTED LT MLG SQUAT SWITCH IAW AMM 32-61-00. PERFORMED MULTIPLE OPS CHECK OF LANDING GEAR EXTENSION AND RETRACTION SYSTEM IAW AMM 32-01-00. OPS CHECKS GOOD.