Airfield Design

Textbook Chapter 9AC: 150/5300-13A

Airside Components

Runways Taxiways (Significant changes to taxiways

occurred recently. See latest FAA Advisory Circulars) *

Taxilanes Apron

Airside Example

Airport Types

Utility airports Speeds < 120 knots

Transport airports Speeds >121 knots

Design Aircraft Classes

Based on wingspan I <49 ft II 49-79 ft III 79-118 ft IV 118-171 ft V 171-197 ft VI 197-262 ft

Runway Spacing (1/2)

Runway to runway – see table 9-4 and footnotes!

VFR I-IV >700 ftV, VI >1200 ft

IFR Min 2,500 ftIndep Arr Min 4,300 ftDepen Arr Min 3,000 ft.Both Dep w/radar 2,500

ftw/o radar 3,500 ft

Runway Spacing table 9-14

(2/2)

Prec.RWYTWY

TWY

600

325 Holding area

500

Parked

800

Taxiways & Taxilanes*

Side to sideTWY 1.2 WS +10TLN 1.1 WS+10

Behind (object to TWY or TLC CL)TWY 0.7 WS +10TLN 0.6 WS+10

Example only … look up specs in recent

ACs

Apron Area

Parking type Nose in Angle Parallel

All around clearance of 0.1 WS+10

Example (1/2)

B727-200; L 154 ft; WS 108 ft

RWY

TWY

Bounds

Example (2/2)

0.1 WS+10=21L=154

0.6 WS+10=75=distance

from CL of TW to object

1.1 WS + 10 = 129 = separation between taxiways

0.1 WS+10=21

0.1 WS+10 =21

WS=108

L+(0.1WS+10)+(WS/2)=230 = distance from taxiway to terminal

Figures for ex 9-1

Figures for ex 9-1

Figures for ex 9-1

Figures for ex 9-1

Figures for ex 9-2

Figures for ex 9-2

Figures for ex 9-2

Figure for ex 9-7

Notice anything different???