MIL-PRF-85281C(AS)
a. Power switch with local/remote indicators
b. Start switch with indicator
c. Stop switch with indicator
d. Reference bar stabilized indicator
e. Reference bar locked indicator
f. Fault indicator and reset switch
g. Reference bar illumination intensity control
h. Warning lamp intensity control
i. Panel and indicator illumination intensity control
In addition, the electronic component assembly shall have the following:
j. Display of reference bar position
k. Test controls and indicators
l. Indicators for 60 Hz and 400 Hz power for gyro signal reference voltage
3.3.7.1 Local/remote control. Design of the HRS shall provide for control of the installed
set from either the electronic component assembly or the control-indicator if installed. If the
control-indicator is not installed, the electronic component assembly shall provide sole control
when optional interconnections are installed as specified on NAVAIRWARCEN Drawing
520896.
3.3.8. Physical characteristics. The HRS equipment shall conform to the interface criteria of
figure 1. Weight and size of HRS components shall conform to the interface requirements of
NAVAIRWARCEN Drawing 212729.
3.3.9 Reliability. The Mean Time Between Failures (MTBF) shall be equal to or greater
than 500 hours (see 6.4.1). All failures shall be recorded.
3.3.10 Maintainability.
3.3.10.1 Mean Time To Repair (MTTR). For organizational maintenance
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