MIL-DTL-58085C
3.4.3 Mounting flange. Mounting flange design, and screw locations, shall be as
shown on figure 1. Flange shall be sealed to the housing with a sealant conforming to
SAE-AMS-S-8802. A gasket shall be provided to seal the flange and the mating surface
of the aircraft.
3.4.4 Terminals. Wiring from the motor (see 3.5.2) and lamp shall terminate in a
connector receptacle conforming to MS3102R10SL-3P of SAE-AS31021. Terminal "A"
shall be connected to the lamp circuit, terminal "B" to the motor circuit, and terminal "C"
to the common ground. The connector location shall be in accordance with the type
key is toward the flange of the light, which will be the 12 o' clock position with the light
as shown in the lower view on figure 1.
3.4.5 Type III light. Type III light shall be furnished in a partially dismantled
condition so that the electrical connector is free to be assembled in either the type I or
type II position (see 1.2) without the use of special tools. A copy of assembly
instructions shall be provided with each type III light.
3.5 Performance.
3.5.1 Life. The light shall withstand 1,000 hours of operation without servicing
other than replacement of the lamp. The lamp shall withstand an average of 250 hours of
operation.
3.5.2 Motor and lamp circuit. The light shall operate satisfactory on any supply
voltage between 24 and 30 volt direct (dc) with an 84 watt rating.
3.5.3 Flash rate. The light shall have a flash rate of 70 flashes per minute, plus or
minus 30, when operated from voltage specified in 3.5.2.
3.5.4 Light intensity. The minimum light intensities in all vertical planes,
measured with the red filter and expressed in terms of "effective" intensities, shall be in
accordance with Table I.
Table I. Minimum effective intensities for anti-collision light.
Angle above or below mounting
Effective intensity
plane of light (degrees)
(candles)
0 to 5
100
5 to 10
60
10 to 20
20
20 to 30 *
10
* Above only.
3.6 Lubricant. Where lubrication is required for the light to comply with 3.5.1, it
shall be within the guide line of MIL-HDBK-838.
3.7 Drainage. The light shall permit drainage of condensation if it is mounted in an
upright or inverted position.
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