MIL-DTL-26517B
Curve I
71 °C
50 °C
Maximum
Temperature
20 °C
100% Output
Rating per this
Detail Specification
10 °C
Curve II
Rating per this
Detail Specification
30 °C
55 °C Ground
Temperature
70 °C
Pressure Altitude 1000 Feet
Minimum temperature curve is applicable to all equipment designed to either maximum temperature Curve I or II.
Maximum temperature Curve II is applicable only for interim procurement and if specifically permitted by this
detail specification.
Test conditions per this detail specification.
Curve I indicates the maximum temperatures to which equipment must be designed to operate satisfactorily in
unconditioned compartments of high performance aircraft powered by air consuming engines.
Curve II indicates the maximum temperatures to which equipment must be designed to operate satisfactorily in
conditioned compartments of high performance aircraft or in low performance aircraft.
FIGURE 1. Altitude-temperature range.
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