TM 1-1510-223-10 Change 3          6-1 CHAPTER 6 WEIGHT/BALANCE AND LOADING Section  I. GENERAL 6-1. EXTENT OF COVERAGE. Sufficient data has been provided so that, knowing the basic weight and moment of the aircraft, any combination of weight and balance can be computed. 6-2. CLASS. Army model RC-12N aircraft are in Weight and Bal- ance Class 1. When operating in a passenger/cargo con- figuration, the aircraft weight and balance classification becomes  a  Class  2.  Additional  directives  governing weight and balance classifications 1 and 2 aircraft forms and records are contained in AR 95-3, TM 55-1500-342-23, and DA PAM 738-751. 6-3. AIRCRAFT COMPARTMENTS AND STATIONS. The aircraft is separated into two compartments asso- ciated with loading. These compartments are the cockpit and the cabin. Figure 6-1 shows the general description of aircraft compartments. Section  II. WEIGHT AND BALANCE 6-4. PURPOSE. The data to be inserted on weight and balance charts and forms are applicable only to the individual aircraft, the serial number of which appears on the title page of the booklet entitled WEIGHT AND BALANCE DATA sup- plied  by  the  aircraft  manufacturer  and  on  the  various forms  and  charts  which  remain  with  the  aircraft.  The charts and forms referred to in this chapter may differ in nomenclature and arrangement from time to time, but the principles on which they are based will not change. 6-5. CHARTS AND FORMS. The standard system of weight and balance control requires the use of several different charts and forms. Within this chapter, the following are used: 1.   Chart C - Basic Weight and Balance Record, DD Form 365-3. 2.   Form F - Weight and Balance Clearance Form F, DD Form 365-4 (Tactical). 6-6. RESPONSIBILITY. The aircraft manufacturer inserts all aircraft identify- ing data on the title page of the booklet entitled WEIGHT AND  BALANCE  DATA  and  on  the  various  charts  and forms. All charts, including one sample Weight and Bal- ance Clearance Form F, if applicable, are completed at time of delivery. This record is the basic weight and bal- ance  data  of  the  aircraft  at  delivery.  All  subsequent changes  in  weight  and  balance  are  compiled  by  the weight and balance technician. 6-7. CHART  C  -  BASIC  WEIGHT  AND  BALANCE RECORD, DD FORM 365-3. Chart C is a continuous history of the basic weight and moment    resulting    from    structural    and    equipment changes made in service. At all times, the last weight and moment/100 entry is considered the current weight and balance status of the basic aircraft. 6-8. WEIGHT  AND  BALANCE  CLEARANCE,  DD FORM 365-4 (TACTICAL). Refer to TM 55-1500-342-23 for DD Form 365-4 in- structions. Refer to table 6-1 through 6-5 for weight and balance data.