MIL-DTL-27723F
d. Insulation resistance of deicing heater element (see 4.6.11)
e. Still air operation (see 4.6.12)
4.4.2 Sampling tests.
4.4.2.1 Sampling plan A. One probe, selected at random from each 40 or less produced
on the contract or order, shall be subjected to the following tests
Individual tests (see 4.4.1)
a.
b.
Temperature calibration (see 4.6.15)
c.
Vibration (see 4.6.16)
d.
Heater power consumption (see 4.6.17)
e.
Hermetic sealing (see 4.6.18)
4.4.2.2 Sampling plan B. Unless otherwise specified (see 6.2), 3 probes, selected at
random from the first 15 items on the contract or order, shall be subjected to the following tests:
a.
Sampling plan A tests (see 4.4.2.1)
b.
Thermal response (see 4.6.4)
c.
Reactance (see 4.6.5)
d.
Static loading (see 4.6.6)
e.
Deicing and anti-icing (see 4.6.7)
f.
Conduction and radiation errors (see 4.6.8)
g.
Deicing heater error (see 4.6.9)
h.
Deicing heater element life (see 4.6.10)
i.
Low temperature and power consumption (see 4.6.13)
j.
High temperature exposure (see 4.6.14)
k.
Recovery error (see 4.6.19)
l.
Self-heating (see 4.6.20)
m.
Humidity (see 4.6.21)
n.
Thermal shock (see 4.6.22)
o.
Salt fog (see 4.6.23)
p.
Fungus (see 4.6.24)
q.
Sand and dust (see 4.6.25)
4.5 Rejection and retest. When an item selected from a production run fails to meet the
specification, no items still on hand or later produced shall be accepted until the extend and cause
of failure have been determined and appropriately corrected. After correction, all of the tests shall
be repeated.
4.5.1 Individual test may continue. For production reasons, individual tests or other
sampling plans may be continued pending the investigation of a sampling test failure, but final
acceptance of items on hand or items produced later shall not be made until it is determined that
all items meet all requirements of this specification.
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