Upper wind FL 140: 160/5–8 kt
Visibilty: 10 km or more
Cloud: Scattered cumulus and stratocumulus at 5 000 ft
No medium level cloud at FL 140.
The night was dark. The moon had set at 20:16 on November 27th 1987.
1.8 Aids to Navigation
The aeroplane was equipped with the following navigational aids and associated displays:
3 inertial navigation systems (INS)
2 weather and mapping radars with 300 nm range.
2 radio magnetic indicators (RMI)
1 standby compass
2 automatic direction finders (ADF)
3 very high frequency omni range (VOR) units
3 distance measuring units (DME)
3 instrument landing systems (ILS)
Plaisance Airport was equipped with the following terminal navigational aids:
2 VOR stations
2 DME stations
2 NDB stations
Runway 14 was equipped with an ILS system. The ground stations were serviceable.
