UFC 3-535-01
17 November 2005
Table 12-3. Aiming of FAA Type L-880 PAPI Relative to Glide Path
Aiming Angle (in minutes of arc)
Light Unit
Height Group 4
Standard installation
Aircraft on
Runway with ILS
Unit nearest runway (#1)
30' above glide path
35' above glide path
Next adjacent unit (#2)
10' above glide path
15' above glide path
Next adjacent unit (#3)
10' below glide path
15' below glide path
Next adjacent (outside) unit
30' above glide path
35' below glide path
(#4)
12-4
PULLING CABLE INTO DUCT
12-4.1
Pull cable into ducts carefully to prevent harmful stretching of the
conductor, injury to the insulation, or damage to the outer protective covering. Duct
should be verified as open, continuous, and free of debris prior to installing cable. The
following summarizes guidance for pulling cable from FAA Specification FAA-C-1391,
Installation and Splicing of Underground Cable. This document may be referenced for
additional information.
12-4.2
Seal all cable ends with moisture-sealing tape before pulling, and maintain
seals until connections are made. All cables to be installed in one duct should be pulled
at the same time. Splices should not be pulled into a duct.
12-4.3
Apparatus for pulling cable at entrances to structures may include a
pulling tube or framework and two sheaves. The diameter of the sheaves should be at
least 10 times the diameter of the largest cable to be pulled. Cable may be pulled by
power winch or by hand. Adequate cable pulling compound should be used of an
approved type (do not use petroleum grease).
12-4.4
Structures such as manholes, handholes, junction boxes, and light bases
are typically spaced so as to avoid excessively long cable pulls. The spacing should not
exceed 180 meters (600 feet), and spacing not more than 120 150 meters (400 500
feet) is preferred.
12-4.5
If possible, the maximum allowable cable length to be pulled should be
obtained from the cable manufacturer. An estimate of the absolute maximum length of
pull based on new, level, straight plastic duct and the use of adequate pulling compound
is as follows:
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