Why were cordless drills restricted from drilling purposes on aircraft (i.e. to drill out a stripped fastener)?
The MAKITA driver is an explosion proof Class 1 Div 1 driver. It is not designed for drilling. It is designed for tightening and loosening fasteners and the clutch is set up to break at the required torque, eliminating over torque of the fasteners. Using this driver as a drill may develop overheating of the driver and could compromise the Cl1 Div1 certification. Also, United Laboratories (UL) made it perfectly clear that this driver is not certified as a drill. Pneumatic and hand drills are authorized for drilling out fasteners; refer to NAVAIR 01-1A-8, paragraph 2-14. R 281147Z AUG 03 FM NAVAIRWARCENACDIV LAKEHURST NJ BT UNCLAS //N13800// MSGID/GENADMIN/NAVAIR LAKEHURST 2335 CDT// SUBJ/BATTERY POWERED DRIVERS// REF/A/MSG/NAVAIRWARCENACDIV LAKEHURST NJ/031840ZJUN2002// AMPN/REF A AUTHORIZED EVALUATION OF CORDLESS DRIVERS.// POC/H. KIMBALL/4.8.7.2/N68335/LOC:NAVAIR LAKEHURST /EMAIL:HAROLD.KIMBALL@NAVY.MIL, 732-323-7139, DSN 624-7139// RMKS/1. REF A AUTHORIZED FOUR DIFFERENT CORDLESS DRI
