TM 1-1510-218-10 9-13 NOTE Windshield defogging may be required. 9-30.  LANDING EMERGENCIES. Structural  damage  may  exist  after  landing with brake, tire, or landing gear malfunctions.      Under   no   circumstances shall  an  attempt  be  made  to  inspect  the aircraft until jacks have been installed. a.   Landing   Gear   Unsafe    Indication    C    D1 Should one or more of the landing gear fail to indicate a  safe  condition,  the  following  steps  should  be  taken before proceeding manually to extend the gear. 1.   LDG GEAR CONTR switch – DN. 2.   LANDING  GEAR  RELAY  and  LANDING GEAR IND circuit breakers – Check in. 3.   GEAR DOWN lights – Check. IF INDICATOR REMAINS UNSAFE: 4.   Landing    gear    emergency    extension    – Perform. NOTE If     gear     continues     to     indicate     unsafe, attempt to verify position visually. b.  Landing   Gear   Unsafe   Indication   D2   T. Should one or more of the landing gear fail to indicate a  safe  condition,  the  following  steps  should  be  taken before proceeding manually to extend the gear. 1.   LDG  GEAR  CONTROL  switch  –   Check DN. 2.   LANDING GEAR CONTROL and LANDING  GEAR  IND  circuit  breakers  – Check in. 3.   GEAR DOWN lights illuminated – Check. IF INDICATOR REMAINS UNSAFE: 4.   Landing    gear    emergency    extension    – Perform. NOTE If     gear     continues     to     indicate     unsafe, attempt to verify position visually. c.   Landing Gear Emergency Extension C  D1. CAUTION Continued   pumping   of   the   handle   after GEAR  DOWN  position  indicator  lights  are illuminated could damage the drive mechanism  and  prevent  subsequent  gear retraction. After an emergency landing gear extension has   been   made,   do   not   stow   the   gear ratchet  handle  or  move  any  landing  gear controls  or  reset  any  switches  or  circuit breakers until the cause of the malfunction has been corrected. 1.   Airspeed – 130 KIAS. 2.   LANDING GEAR RELAY circuit breaker – Out. 3.   LDG GEAR CONTR switch – DN. 4.   Landing  gear  alternate  engage  handle  – Lift and turn clockwise to the stop. 5.   Alternate landing gear extension handle – Pump. 6.   GEAR DOWN lights illuminated – Check. d.  Landing Gear Emergency Extension D2 T . NOTE It  could  require  as  many  as  80  strokes  or more   to   achieve   full   extension.      Allow additional time during the approach phase to assure gear extension prior to landing. 1.   Airspeed – Below 181 KIAS. 2.   LANDING GEAR CONTROL circuit breaker – Pull. 3.   LDG GEAR CONTR switch – DN. 4.   Alternate extension lever – Unstow. 5.   Alternate  extension  lever  –  Pump  up  and down  until  the  three  green  GEAR  DOWN lights illuminate or resistance is felt. WARNING