Sample of Army Letter Department of the Army (Type in your Unit Name) (Type in your Base) Office Symbol Date MEMORANDUM FOR: Federal Aviation Administration Airworthiness Inspector SUBJECT: Concurrent powerplant experience of TYPE YOUR NAME HERE for FAA Powerplant rating I/A/W FAR Part 65. 1. YOUR NAME, SSN has performed the following maintenance of the Lycoming T53-L13, General Electric T-7000-701/701C and Allison T-63-A-700 turbine engines consistently and concurrently while serving in the following Military Occupational Specialties: 67N10 Mechanic, 67N1F Flight Engineer and 67T10 Mechanic. 2. The time period FROM DATE TO DATE (# OF MONTHS) YOUR NAME has Performed Inspection, Removal, Repair, Preservation, Installation, Replacement, Rigging, Adjustment, Troubleshooting and Trimming of Engine: A. GENERAL COMPONENTS # OF MONTHS: Accessory Gearbox Module XX Baseplate and Spindle Gearboxes XX Compressor Halves XX High Speed Shaft XX Power Turbine Governor Replacement XX Load Demand Spindle Cables XX Load Demand Rotary Inputs XX Engine Control Unit XX Engine Ignitor Removal, Inspection & Replacement XX Engine NI, NP, TGT, Torque, N2, Oil Pressure Instruments XX Engine Mounts XX Engine Struts XX Engine Water Wash Hosing XX Gas Generator Rotors XX Compressor Bleed Air Valves and Tubes XX Common Drain Tubing XX B. FUEL AND FUEL METERING SYSTEM Hydromechanical Unit XX Fuel Filter Bypass Indicator XX Fuel Control/Power Turbine Governor Rigging XX Fuel Filter XX Fuel Pressure Sensor XX Pressure and Overspeed Drain Valve XX C. OIL LUBRICATION SYSTEMS Engine Oil Filter Bypass Indicator XX Engine Electrical Chip Detector XX Axis "G" Seal XX Oil Filter XX Oil Temperature Sensor XX Oil Pressure Indicator and Switch XX D. ENGINE HEALTH INDICATOR TEST (HIT) Tested and Established Baseline for Proper Engine Functions XX E. PNEUMATIC AND INDUCTION SYSTEMS Anti-Icing Start and Bleed Valve XX Anti-Ice Thermostat Switch XX Air Start Inlet Line XX Air Turbine Pneumatic Starter XX Air Flexible Connection Housing XX Pneumatic Starter Face Plate XX Pneumatic Starter Tubing XX Inlet Swirl Frame XX Inlet Particle Separator Blower Set XX Inlet Particle Separator Blower Duct XX Inlet Particle Separator Blower XX F. FIRE DETECTION AND PROTECTION SYSTEM Fire Bottle Extinguisher Tubing XX Fire Bottle Squib XX Engine Halon Fire Bottles XX Engine Fire Detector Optical Sensor XX G. EXHAUST SYSTEMS Primary Exhaust Nozzles XX Secondary Exhaust Nozzles XX Exhaust Gas Temperature Harness XX Exhaust Gas Temperature Probes XX H. ENGINE INSPECTION 10 Hour/14 Day Inspection of: Oil Tank Level XX Oil Tank Filler Cap XX Engine Electrical Cable for Chaffing XX Fuel Oil and Air Tubes for Security & Evidence of Chaffing or Leakage XX PAS & LDS Cable Controls for Security & Proper Rigging XX V-Band Clamps on HMU/IPS Blower Duct/Inlet Swirl Frame/Exhaust System XX Exterior of Engine for Evidence of Oil, Fuel & Air Leaks XX Oil Filter for Impending Bypass XX Fuel Filter for Impending Bypass XX Engine Mounts for Security XX Engine Inlet & Exhaust for FOD XX P3 Line to HMU for Cracks and Security XX I. BORSCOPE INSPECTION ON THE FOLLOWING: Compressor Section XX Combustion Section XX J. COMPRESSOR CLEANING Cleaned Compressor Using Universal Water Flush Kit/Cleaning Solvent XX 3. YOUR NAME has demonstrated the ability, knowledge, experience and training to take the examination for General, Airframe and Powerplant licenses. SIGNATURE BLOCK Commander, Maintenance Officer or A&P Mechanic Letter Sample Courtesy of Hunter Army Airfield, GA