New Legaspi Airport Draft FS - PPP Center

5.1.2 Implications of Option I (Improving the Existing Legaspi Airport
Facilities)
This strategy requires the doubling of the existing runway strip and shifting the
aircraft-parking apron together with the terminal facilities to satisfy the
requirements of the precision approach runway. A possible scheme for
general development, while keeping the airport operational, is shown in
Figure 5.1-1.
The existing runway at the Legaspi Airport is more than enough to
accommodate domestic operation of A320, and B737 if obstacles surrounding
the airport are removed. Improving the runway for precision approach may be
undertaken by shortening the runway to 2,000-m so that the 300-m wide
runway strip, together with the localizer area and runway end safety area
could be established without diverting the nearby Yawa river. However, a
portion of the Bagtang river and the road located at the southern end of the
airport need to be diverted, together with other roads in the vicinity. The
terminal facilities including aircraft parking apron would need to be
redeveloped beside the existing terminal area with adequate separation
distance from the runway centerline.
The precision approach will be established for Rwy 06, and one (1) set of
Instrument Landing System (ILS), consisting of localizer and glide path/DME
should be installed. In order to ensure adequate signal performance of the
equipment, the localizer (to be located at the northern end of the runway) and
glide path critical areas should be provided and properly graded. Rwy 24-end
should be displaced to the south by 300-m to accommodate the localizer
critical area and avoid diversion of the Yawa river. The glide path critical area
would be provided along the southwestern part of the expanded runway strip.
However, due to the existing alignment of the Manila-Legaspi railway, the
length of the precision approach lighting system would be limited to
approximately 500-m which could result in operational limitation of the ILS
approach procedure.
5-2