3.5 Support and ownership requirements. Each engine shall possess the following life
cycle ownership characteristics.
3.5.1 Endurance. The engine shall retain 90% of the rated power after being subjected to
a 400-hour endurance test cycle, operating in an operating profile scenario (see 188.8.131.52).
3.5.2 Identification marking. Parts requiring identification shall be identified in
accordance with the requirements of the specific product drawings (see 4.5.2).
3.5.3 Nameplates. Unless otherwise specified in applicable drawings (see 6.2), the
nameplate, data and instruction plates shall conform to A-A-50271 (see 4.5.2).
3.5.4 Workmanship/safety. Manufacturing techniques shall not cause the degradation of
inherent engine reliability or durability, and shall pose no hazards, physically or electrically to
personnel operating the engine (see 4.5.2 and 184.108.40.206)
3.6 Operating environment requirements. Each engine shall operate under the following
environmental conditions, without degradation in performance.
3.6.1 Extreme-temperature starting ability. The engine shall start under the following
conditions (see 220.127.116.11):
a. After being cold-soaked to an ambient temperature of -25°F (-32°C) without
external aids or benefit of solar radiation. (Cold-soak is to reduce the temperature
of the engine, fuel, and lubricating oil to within 5°F (-2.8°C) of the ambient air
b. After being cold-soaked to an ambient temperature of -65°F, with the
winterization kit preheating the cold-soaked batteries and lubricating oil to
c. After being operated at an ambient temperature of 115°F with exposure to
maximum solar radiation with the lubricating oil at the maximum attainable
temperature up to 250°F measured at the main oil gallery (oil cooler outlet).
3.6.2 High-temperature operation. Engine temperatures shall not exceed the following
limits when operating at the maximum GCBHP full power setting (see table II) with an air inlet
temperature of 115°F (see 18.104.22.168):
a. Lubricating oil temperature
(measured at the main oil gallery;
oil cooler outlet).
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