1-11. MAINTENANCE OPERATIONAL CHECKS (MOCS).

1-5. PRE-INSPECTION MAINTENANCE TEST FLIGHT (MTF).

Figure 1-1. Example of Using the Phased Maintenance Checklist

TM-55-1520-240-PM CH-47D Heilcopter Manual
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TM 55-1520-240-PM 1-11. MAINTENANCE OPERATIONAL CHECKS (MOCS). After the completion of any required corrective action to any of the components of a functional system of the aircraft, MOCs shall be performed on that system to determine the effectiveness of the maintenance actions performed and to verify the proper operation of that system (refer to TM 55-1520-240-T). These MOCs shall be performed in accordance with TM 1-1500-328-23. 1-12. MAINTENANCE TEST FLIGHT (MTF). When all required inspections in Section II have been accomplished and initialed in accordance with the above procedures, the MTF shall be performed in accordance with the requirements of TM 1-1520-240-MTF and TM 1-1500- 328-23 using the MTF form in the TM 1-1520-240-MTF manual. 1-13. CHECKLIST DISPOSITION. The completion of each phased maintenance inspection shall be recorded on applicable aircraft forms as addressed in DA PAM 738-751. The signed checklist, together with all forms prescribed by DA PAM 738-751 will be filed for a period of six months. At the end of the six-month period, disposition of forms will be in accordance with DA PAM 738-751. 1-14. INSPECTION AREAS. Figure 1-4 shows the inspection area of the CH-47D aircraft. Figure 1-5 shows the location of access doors and panels which require removal at various phased maintenance inspections. 1-15. SERIAL NUMBER CHECKLIST (FIGURE 1-6) AND EQUIPMENT INVENTORY CHECK. After all corrective actions have been completed and following completion of the Phased Inspection, the Technical Inspector shall make a serial number ver- ification check, aircraft component historical record and an aircraft equipment inventory check in accordance with DA PAM 738-751. 1-3

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