TAXIWAY CENTERLINE TO FIXED OR
MOVABLE OBJECT
FAA EASTERN REGION
MODIFICATION OF AIRPORT DESIGN STANDARDS
Date: March 18, 2008
Page 1 of 2
BACKGROUND
1.
AIRPORT:
2.
LOCATION (CITY, STATE):
John F. Kennedy
International Airport
New York, New York
4.
5. APPROACH (EACH RUNWAY):
EFFECTED RUNWAY/TAXIWAY:
Taxiway A, B, C, CE, Q, R, S, and
W
See Figure 1
7.
4R, 4L, 13L, 22R, 22L, 31R,
31L PIR
___ NPI
_13R__ VISUAL
3.
LOC ID:
JFK
6. AIRPORT REF. CODE (ARC):
D-V
DESIGN AIRCRAFT (EACH RUNWAY/TAXIWAY):
B747-8
MODIFICATION OF STANDARDS
8.
TITLE OF STANDARD BEING MODIFIED (CITE REFERENCE DOCUMENT):
Group VI Taxiway centerline to fixed or moveable object, AC 150/5300-13 AIRPORT DESIGN, Table 2-3
9.
STANDARD/REQUIREMENT:
193 feet, in accordance to Table 2-3
10. PROPOSED:
146 feet for Taxiway A and 135 feet for Taxiways B (between U to Q), C, CE, Q, R, S, and W
11. EXPLAIN WHY STANDARD CANNOT BE MET (FAA ORDER 5300.1E):
Relocating the existing restricted service road towards the CTA and cargo areas would reduce available ramp
space, increase ramp congestion and result in a downsizing and/or elimination of existing gate positions at one
of the most heavily delayed airports in the country. Reducing CTA and cargo ramp space further would
exacerbate the existing significant delay condition.
12. DISCUSS VIABLE ALTERNATIVES (FAA ORDER 5300.1E):
No other viable alternatives.
13. STATE WHY MODIFICATION WOULD PROVIDE ACCEPTABLE LEVEL OF SAFETY (FAA ORDER 5300.1E):
See attached.
ATTACH ADDITIONAL SHEETS AS NECESSARY – INCLUDE SKETCH/PLAN
FAA EASTERN REGION
MODIFICATION OF AIRPORT DESIGN STANDARDS
Date: March 18, 2008
Page 2 of 2
MODIFICATION:
LOCATION:
JFK – TWY Centerline to Fixed or
Movable Object (B747-8)
JFK International Airport
14. SIGNATURE OF ORIGINATOR:
Scott Marsh – PANYNJ – Aeronautical and
Technical Services
17. DATE OF LATEST FAA SIGNED ALP:
15. ORIGINATOR’S ORGANIZATION:
16. TELEPHONE:
The Port Authority of New York and New
Jersey
212-435-3898
December 3, 2004, with pen/ink changes
18. ADO RECOMMENDATION:
19. SIGNATURE:
20. DATE:
21. FAA DIVISIONAL REVIEW (AT, AF, FS):
ROUTING SYMBOL
SIGNATURE
DATE
CONCUR
NON-CONCUR
COMMENTS:
22. AIRPORTS’ DIVISION FINAL ACTION:
[ ] UNCONDITIONAL APPROVAL
DATE:
CONDITIONS OF APPROVAL:
SIGNATURE:
[ ] CONDITIONAL APPROVAL
TITLE:
[] DISAPPROVAL
SUPPLEMENT TO
FAA EASTERN REGION
MODIFICATION OF AIRPORT DESIGN STANDARDS
Proposed modification to taxiway centerline to fixed or moveable object
13. State why modification would provide an acceptable level of safety.
Taxiway A surrounds the entire Central Terminal Area (CTA) at JFK, and is located 146 feet
from the restricted vehicle service road, while Taxiways B, C, CE, Q, R, S, and W are located
outside of the CTA, 130 feet or more away from restricted vehicle service roads (see Figure 1).
JFK has accommodated Boeing 747 aircraft operations for more that 35 years with
taxiway/restricted vehicle service road separations of 130 feet without incident. The 747-8 has a
wingspan of 224.4 feet increased from the 213-foot wingspan of the 747-400, a 5.7-foot wingtip
extension. To produce a wingtip to service road separation similar to existing conditions, the
service road edge will be moved five feet away from adjacent taxiways by shrinking the width of
the service road by 5 feet. In addition to the JFK operating history of the 747, the FAA analysis
titled “Statistical Extreme Value Analysis of JFK Taxiway Centerline Deviations for 747
Aircraft” indicates that the risk of the 747-8 wing reaching the service road limits, at the 95%
confidence level, is greater than one in a hundred million.
The outer engine of the 747-8 will be located at the same distance from aircraft centerline as the
747-400. Years of operational experience with the 747-400 at JFK indicate that a vehicle service
road to taxiway separation of 130 feet produces an acceptable level of safety. Analysis of
taxiway centerline deviation data obtained at JFK of large aircraft indicates that large aircraft
stay very close to centerlines while taxing. In addition, the jet blast profile of the 747-8 at
breakaway thrust is not expected to be significantly different than that experienced with the 747400 (See Figure 4).
TAXIWAYS
'B, C, CE, Q, R, S, and W'
TAXIWAY "B, C, Q, R, S"
130' (Min.)
30'
RSR
EDGE OF RSR
EXISTING
224.4'
747-8
112.2'
14'
19.7'
17.8'
75'
EXISTING TAXIWAY SECTION
John F. Kennedy International Airport
New York, NY
TAXIWAYS
'B, C, "B,
CE,C,Q,
S, and W'
TAXIWAY
Q, R,
R, S"
135' (Min.)
25'
RSR
EDGE OF RSR
EXISTING
224.4'
747-8
112.2'
14'
19.7'
22.8'
75'
EXISTING TAXIWAY SECTION
John F. Kennedy International Airport
New York, NY
4