051. Airframe AD 990020 ACB 2 ASCB NOISE TEST Airframe Eff. Desc: 5001.5056. AD Airframe 990030 ACB 3 DE-ACTIVATION-ADEL WITHIN 25HRS.NOT WIGGINS FLOOR HEATER SYSTEM TO EXCEED 30 DAYS. G550 5001- 5075 WITH WIGGINS PADS 24 MAN N/A 0.0 0 26 Nov 2007 C 0.00 24 MAN N/A 0.0 0 26 Nov 2007 C 0.00 31 MAN N