Beechcraft C-12C Operator And Technical Reference Manual

Contents

Beechcraft C-12C Operator And Technical Reference Manual Manual pdf 592 page image

TM 1-1510-218-10Following decompression, the cabin pressure altitudeis considered to be the same as the flight altitude.c. When flying at altitudes above 25,000 feet,one mask per occupant must be coupled to the oxygenoutlet and immediately available C .d. Oxygen system data/duration tables may befound in Chapter 2.5-36. CABIN PRESSURE LIMITS.Maximum cabin differential pressure is 6.1 psiC D T1 6.6. psi T2.5-37. CRACKED CABIN WINDOW/WINDSHIELD.If a crack occurs in a single ply of cabin exteriorwindow, the aircraft is limited to unpressurized flight. Ifa crack occurs in both outer and inner plies of thecabin exterior window, the aircraft shall not be flownunless proper authorization is obtained for anunpressurized ferry flight. If a crack occurs in an outerply windshield, no action is required in flight. If a crackoccurs in an inner ply windshield or if a crack occurs ineither/both plies of a cabin window, refer to emergencyprocedures in Chapter 9.Section VIII. OTHER LIMITATIONS5-38. PASSENGER SEATS.The cabin passenger seats may be used in theforward or aft positions. The headrest and seat back,when occupied, must be in the fully upright position fortakeoff and landing.5-39. ILS LIMITS.During an ILS approach, do not operate thepropellers in the 1750 to 1850 RPM range.5-40. INTENTIONAL ENGINE CUT SPEED.In-flight engine cuts below the safe one-engineinoperative speed of V sse, 104 KIAS are prohibited.5-41. LANDING ON UNPREPARED RUNWAY.CAUTIONOperation on unimproved, soft, or roughsurfaces is recommended only for aircraftequipped with high floatation landing gear.CAUTIONExcept in an emergency, propellers shouldbe moved out of reverse above 40 knots tominimize propeller blade erosion, andduring crosswind, to minimize stressimposed on propeller, engine and airframe.Care shall be exercised when reversing onrunways with loose sand or dust on thesurface. Flying gravel will damagepropeller blades and dust may impair thepilot’s forward visibility at low airplanespeeds. The aircraft has demonstratedlandings on hard, smooth surfaces and drysod runways. Hard braking, i.e., skiddingtires while operating on other than smoothsurfaces, can result in damage to thelanding gear. When landing on other thandry surfaces, use discretionary propellerreverse to stop the airplane on theavailable runway.5-42. MINIMUM OIL TEMPERATURE REQUIREDFOR FLIGHT.CAUTIONAnti-icing additive must be properlyblended with the fuel to avoid deteriorationof the fuel cell. The additive concentrationby volume shall be a minimum of .06% andmaximum .15%. Approved procedure foradding anti-icing concentrate is containedChapter 2, Section XII.5-16