EXHIBIT 21.1

SUBSIDIARIES OF THE REGISTRANTS

COMPANY NAME	STATE OF INCORPORATION
AAC Subsidiary, LLC		Delaware
Airport Parking Management Inc.		Delaware
Atlantic Aviation Corporation		Delaware
Atlantic Aviation Flight Support, Inc.		Delaware
Atlantic Aviation Holding Corporation		Delaware
Atlantic Aviation Philadelphia, Inc.		Delaware
Brainard Airport Services, Inc.		Connecticut
Bridgeport Airport Services, Inc		Connecticut
BTV Avcenter, Inc.		Delaware
Charter Oak Aviation, Inc.		Connecticut
Communications Infrastructure LLC		Delaware
Eagle Aviation Resources, Ltd.		Nevada
ETT National Power, Inc.		Illinois
ETT Nevada, Inc.		Nevada
Executive Air Support, Inc		Delaware
FLI Subsidiary, LLC		Delaware
Flightways of Long Island, Inc.		New York
Futura Natural Gas LLC		Delaware
General Aviation Holdings, LLC		Delaware
General Aviation of New Orleans, LLC		Louisiana
General Aviation, LLC		Louisiana
ILG Avcenter, Inc.		Delaware
Macquarie Airports North America Inc.		Delaware
Macquarie Americas Parking Corporation		Delaware
Macquarie Aviation North America 2 Inc.		Delaware
Macquarie Aviation North America Inc.		Delaware
Macquarie District Energy Holdings LLC		Delaware
Macquarie District Energy Inc.		Delaware
Macquarie FBO Holdings LLC		Delaware
Macquarie Gas Holdings LLC		Delaware
Macquarie Infrastructure Company Inc. (d/b/a Macquarie Infrastructure Company (US))		Delaware
Macquarie Yorkshire Limited		United Kingdom
Macquarie Yorkshire LLC		Delaware
MDE Thermal Technologies Inc.		Illinois
MIC European Financing S.a.r.l.		Luxembourg
Newport FBO Two LLC		Delaware
North America Capital Holding Company		Delaware
Northwind Aladdin LLC		Nevada
Northwind Chicago LLC		Delaware
Northwind Midway, LLC		Delaware
Palm Springs FBO Two LLC		Delaware
Parking Company of America Airports Holdings, LLC		Delaware
Parking Company of America Airports Phoenix, LLC		Delaware
Parking Company of America Airports, LLC		Delaware
PCA Airports, Ltd.		Texas

163

COMPANY NAME	STATE OF INCORPORATION
PCAA Chicago, LLC		Delaware
PCAA GP, LLC		Delaware
PCAA LP, LLC		Delaware
PCAA Missouri, LLC		Delaware
PCAA Oakland, LLC		Delaware
PCAA Parent, LLC		Delaware
PCAA Properties, LLC		Delaware
PCAA SP, LLC		Delaware
PCAA SP-OK, LLC		Delaware
RCL Properties, LLC		Pennsylvania
Seacoast (PCAA) Holdings Inc.		Delaware
South East Water LLC		Delaware
Thermal Chicago Corporation		Delaware

164