Exhibit
21.1




APPENDIX
A — SUBSIDIARIES





AAC
Subsidiary, LLC


ACM
Aviation, LLC


ACM
Property Services, LLC


Airport
Parking Management, LLC (f/k/a Airport Parking Management Inc.)


Ascend
Dvpt HWD, LLC


Ascend
Dvpt II, LLC


Atlantic
Aviation Albuquerque, Inc.


Atlantic
Aviation Corporation


Atlantic
Aviation FBO Holdings LLC (f/k/a Macquarie FBO Holdings LLC)


Atlantic
Aviation FBO, Inc. (f/k/a North America Capital Holding Company)


Atlantic
Aviation Flight Support, Inc.


Atlantic
Aviation Holding Corporation


Atlantic
Aviation Investors, Inc. (f/k/a Supermarine Investors, Inc.)


Atlantic
Aviation of Santa Monica, L.P. (f/k/a Supermarine of Santa Monica, a
California Limited Partnership)


Atlantic
Aviation Philadelphia, Inc.


Atlantic
Aviation Stewart LLC (f/k/a Supermarine of Stewart LLC)


Atlantic
SMO GP LLC


Atlantic
SMO Holdings LLC


Aviation
Contract Services, Inc.


BASI
Holdings, LLC


Brainard
Airport Services, Inc.


Bridgeport
Airport Services, Inc.


BTV
Avcenter, Inc.


Charter
Oak Aviation, Inc.


COAI
Holdings, LLC


Communications
Infrastructure LLC


Corporate
Wings-CGF, LLC


Corporate
Wings-Hopkins, LLC


Eagle
Aviation Resources, Ltd.


ETT
National Power, Inc.


ETT
Nevada, Inc.


Executive
Air Support, Inc.


FLI
Subsidiary, LLC


Flightways
of Long Island Inc. d/b/a Million Air


Futura
Natural Gas LLC


General
Aviation Holdings LLC


General
Aviation of New Orleans, LLC


General
Aviation, LLC


HGC
Holdings LLC


HGC
Investment Corporation


ILG
Avcenter, Inc.


Jet
Center Property Services, LLC


JetSouth
LLC


MAC
Acquisitions LLC


Macquarie
Airports North America Inc. (US)


Macquarie
Americas Parking Corporation (US)


Macquarie
Aviation North America 2 Inc.


Macquarie
Aviation North America Inc.


Macquarie
District Energy Holdings LLC


Macquarie
District Energy Holdings II LLC









Macquarie
District Energy Holdings III LLC


Macquarie
District Energy LLC (f/k/a Macquarie District Energy, Inc.)


Macquarie
Gas Holdings LLC


Macquarie
HGC Investment LLC


Macquarie
Infrastructure Company Inc. (d/b/a Macquarie Infrastructure Company
(US))


Macquarie Terminal Holdings LLC


Macquarie
Yorkshire LLC


MDE
Thermal Technologies Inc.


Mercury
Air Center-Addison, Inc.


Mercury
Air Center-Bakersfield, Inc.


Mercury
Air Center-Birmingham, LLC


Mercury
Air Center-Burbank, Inc.


Mercury
Air Center-Charleston, LLC


Mercury
Air Center-Corpus Christi, Inc.


Mercury
Air Center-Fort Wayne, LLC


Mercury
Air Center-Fresno, Inc.


Mercury
Air Center-Hartsfield, LLC


Mercury
Air Center-Hopkins, LLC


Mercury
Air Center-Jackson, LLC


Mercury
Air Center-Johns Island, LLC


Mercury
Air Center-Los Angeles, Inc.


Mercury
Air Center-Nashville, LLC


Mercury
Air Center-Newport News, LLC


Mercury
Air Center-Ontario, Inc.


Mercury
Air Center-Peachtree-Dekalb, LLC


Mercury
Air Center-Reno, LLC


Mercury
Air Centers, Inc.


Mercury
Air Center-Santa Barbara, Inc.


Mercury
Air Center-Tulsa, LLC


Newport
FBO Two LLC


Northwind
Aladdin LLC


Northwind
Chicago LLC


Northwind
Midway LLC


Palm
Springs FBO Two, LLC


Parking
Company of America Airports Holdings, LLC


Parking
Company of America Airports Phoenix, LLC


Parking
Company of America Airports, LLC


PCA
Airports, Ltd.


PCAA
Chicago, LLC


PCAA
GP, LLC


PCAA
LP, LLC


PCAA
Missouri, LLC


PCAA
Oakland, LLC (f/k/a PCAA Chicago Holdings, LLC)


PCAA
Parent, LLC


PCAA
Properties, LLC


PCAA
SP, LLC


PCAA
SP-OK, LLC


ProAir
Aviation Maintenance, LLC (merger of CPR Maintenance LLC and DVT Maintenance
LLC)


RCL
Properties, LLC


Rifle
Air, LLC


Rifle
Jet Center Maintenance, LLC


Rifle
Jet Center, LLC


SB
Aviation Group, Inc.


SBN,
Inc.


Seacoast
Holdings (PCAAH), Inc.


Sierra
Aviation, Inc.









SJJC
Airline Services, LLC


SJJC
Aviation Services, LLC


SJJC FBO Services, LLC


South
East Water LLC


Sun
Valley Aviation, Inc.


The
Gas Company LLC


Thermal
Chicago Corporation


Trajen
FBO, LLC


Trajen
Flight Support, LP


Trajen
Funding, Inc.


Trajen
Holdings, Inc.


Trajen
Limited, LLC


Waukesha
Flying Services, Inc.