From: Your  command To: CHNAVPERS   (PERS-51) Via: Type  commander/claimant Manpower authorization (activity title) Activity code or UIC Transaction  number  of  latest  MPA  held Change requested: (Clearly state what change is requested.) Billet: (Identify each billet for which changes are requested. Indicate billet sequence code, title, and designator/grade or rating/rate.) Justification: (Clearly state why the change is requested.) NOTE: Type commander’s statement of applicability to other like commands: (send via MANCLASS) copy  to: CO,  NAVMAC Figure  5-2.-Manpower  authorization  short-format  change  request. requested by use of the short format arc restricted to the introduction  of  manpower  requirements  data  into  the following: NEC changes incident to changes in authorized equipment. Navy   officer   billet   classification   (NOBC) changes for billets that do not require special pay and  are  not  applicable  to  other  similar commands. Correction  of  typographical  errors  noted  in manpower  authorizations;  for  example,  billet title. Figure 5-2 shows the letter format that must be used and information that it must contain. The letter must be modified to conform with the DON   Correspondence Manual. COMPLETION OF MANPOWER AUTHORIZATION CHANGE REQUEST The  Manpower  Authorization  Change  Request, OPNAV 1000/4A, is used by the activities to request the assignment  of  manpower  or  changes  to  manpower authorizations. The form is also used by CNO for the NMDAS. The completed form is forwarded under a letter that must reference the transaction number and date of the manpower authorization on which the requested change is  based  and  must  include  the  justification  for  the requested  change. Bold  legible  handprinting  is  acceptable  on  any OPNAV 1000/4A submission. The expense of typing these  forms  is  seldom  warranted. Separate OPNAV 1000/4A forms must be prepared in  requesting  changes  to  officer,  enlisted,  and  civilian manpower authorizations. When a change request is prepared,  consideration  must  be  given  to  all billets/positions in the activity that will be affected by the change. Unless   a   complete   reorganization   is   being requested,  only  those  billets/positions  to  be  added, changed,  or  deleted  should  be  entered  on  the  OPNAV 1000/4A. The original and two copies of the form must be submitted via the administrative chain of command to PERS-51. Additional copies should be prepared as 5-12