MIL-PRF-27197E
3.5.13.2 MAEAS friction error. The MAEAS friction error shall be less than 10 knots.
3.5.13.3 Mach number scale friction error. The mach number scale friction error shall be less
than 5 knots.
3.5.14 Position error.
3.5.14.1 IAS position error. The IAS position error shall be less than 3 knots for airspeeds less
than 200 knots and shall be less than 5 knots for airspeeds greater than 200 knots.
3.5.14.2 MAEAS position error. The MAEAS position error shall be less than 10 knots.
3.5.14.3 Mach number scale position error. The mach number scale position error shall be less
than 5 knots.
3.6 Item identification. The indication shall be permanently and legibly marked with the
following information:
a.
Manufacturer s name
b.
Manufacturer s CAGE code
c.
Manufacturer s part number
d.
Manufacturer s lot number
e.
National Stock Number (NSN)
f.
Date of manufacture.
3.7 Interchangeability. All parts hiving the same manufacturer s part number shall be
functionally and dimensionally interchangeable.
3.8 Environmental conditions.
3.8.1 Temperature.
3.8.1.1 Operating temperature. The indicator shall operate in temperatures ranging from -65o to
160oF.
3.8.1.2 Exposure temperature. The indicator shall withstand exposure to temperatures ranging
from -85o to 160oF.
3.8.2 Vibration.
3.8.2.1 Vibration tolerance. The indicator shall operate while vibrated at double amplitude of
0.10 inch from 5 to 20 Hz and while vibrated at 2g from 20 to 500 Hz.
3.8.2.2 Vibration error. The indicator shall function with a tolerance of +10 knots while vibrated
at double amplitude between 0.003 and 0.005 inch at frequencies from 5 to 50 Hz.
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