T M    5 5 - 2 4 2 0 - 2 2 4 - 1 4 of  parking  shoring  (2  x  6  inches  x  4  feet,  two  per stack)  between  the  front  dozer  blade  and  the aircraft floor. (2) HMMH.  Install  1/2-inch  wire  rope  (safety cable)  around  top  crane  arm  and  through  left center   tiedown   provision   on   chassis,   forming   a loop. Secure the loop by pulling the wire rope taut (not tight) and installing two 1/2-inch clips. Repeat same  procedure  for  right  side,  except  loop  wire rope  through  right  provision  on  chassis.  Each HMMH  requires  two  stacks  of  parking  shoring  (2 x  6  inches  x  5  feet,  two  per  stack)  between  the front  forklift  tines  and  the  aircraft  floor.  Also  the rear  outriggers  are  to  be  secured  with  1/2-inch wire rope (safety cable) looped around each outrig- ger and secured with two 1/2-inch clips. c.  The   C–5   aircraft   can   transport   the   SEE, HME,  and  HMMH  in  the  travel  configurations. (1)  SEE.  Install  1/2-inch  wire  rope  (safety cable)  taut  (not  tight)  around  the  ROPS  and  the backhoe  attachment  and  secure  with  two  1/2-inch clips.  Also,  install  on  right  outrigger  a  1/2-inch wire rope (safety cable) taut (not tight) through the bucket tiedown provisional and around outriggers. Repeat  procedures  for  left  outrigger.  Each  SEE requires  two  stacks  of  parking  shoring  (2  x  6 inches  x  4  feet,  two  per  stack)  between  the  front end loader and the aircraft floor. (2) HME  and  HMMH.  To  transport  the  HME and  HMMH  in  the  C–5  aircraft,  follow  the  same procedures in paragraph 4-6b. d. The shoring is required to protect the aircraft floor  and  any  downward  motion  of  the  front  or rear implements on the aircraft floor. e. All  shoring  material  will  be  furnished  by  the shipper  and  installed  as  directed  by  the  aircraft loadmaster. f. The aircraft commander or his/her representa- tive ensures that the vehicles are loaded/unloaded and  properly  secured  in  the  aircraft  according  to the criteria in section IV of the appropriate techni- cal  order. g. Typical  tiedown  diagrams  (figs  4-1  through 4–3) are based on acceptable methods. They can be used as a guide for loading and securing the SEE, HME,  and  HMMH  aboard  aircraft  and  also  for preparing a vehicle for air transport. The tiedowns are part of the aircraft equipment. 4-7.   Transport   by   LVAD   and   LAPE The  SEE  is  certified  for  low  altitude  parachute extraction  (LAPE)  from  US  Air  Force  C–130  air- craft and certified for low velocity airdrop (LVAD) from  US  Air  Force  C-130  and  C-141  aircraft. Preparation  and  procedures  for  LAPE  and  LVAD 4-2 airdrops  are  described  in  FM  10–539  and  TO 13C7-1-17. 4-8.   Helicopter   Transport The  SEE  is  within  the  external  lift  capability  of the  CH–47D  helicopter  in  either  single-hook  (fig 4–3)  or  dual-hook  (fig  4–4)  configuration  at  air- speeds  of  100  knots.  The  load  is  also  suitable  for external  transport  by  the  CH–54  helicopter  (fig 4-5) at airspeeds of 95 knots. a. Materials. (1)  Sling  set  (25,000-pound  capacity)  –  one each. (2)  Nylon  cord,  Type  III-as  required. (3) Cotton webbing–as required. (4)  Tape,  adhesive,  pressure-sensitive,  2-inch roll—as  required. (5)  Felt,  padding,  sheet–four  each  (for  cush- ioning material). b. Preparation. (1) Ensure that the front end loader assembly travel  locks  at  the  ends  of  both  front  end  loader boom cylinders are properly pinned in place. (2) Secure steering wheel, doors, and all loose equipment with cord and tape as necessary. (3)  Fold  side  mirrors  inboard  and  tie  or  tape as  required. (4) Tape windshield wipers to windshield. (5) Securely tie and tape engine compartment hood. (6)  Tie  or  tape  the  hydraulic  lines  and  hoses close  to  the  forward  lifting  provisions  to  prevent possible entanglement during hookup. c.  Rigging  Procedures. (1)  Place  apex  fitting  on  top  of  the  falling object  protection  system  (FOPS).  Route  the  outer sling legs (1 and 2) to the front of the SEE and the inner sling legs (3 and 4) to the rear of the SEE. NOTE Sling legs 1 and 3 should be the same side of the load. (2)  Loop  the  chain  ends  of  sling  legs  1  and  2 through the respective front lifting provisions, and insert link 3 into the grabhook. Wrap a felt sheet around the chain ends of the sling legs and secure with tape or nylon cord (fig 4–7). (3)  Loop  the  chain  end  of  sling  leg  3  through the  right  rear  lifting  provision  (closest  to  the backhoe  bucket)  and  insert  link  10  into  the  grab- hook.  Wrap  a  felt  sheet  (cushioning  material) around  the  chain  end  of with  tape  or  nylon  cord. links (fig 4-8). the  sling  leg  and  secure Tape  or  tie  excess  chain