Here ya go! Looks like a modified 30 series Lear Jet pylon they used for mounting the engines
N-Number Inquiry Results
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N221SF is Assigned
Aircraft Description
Serial Number 160 Type Registration Corporation
Manufacturer Name CANADAIR Certificate Issue Date 01/14/1983
Model T-33 Status Valid
Type Aircraft Fixed Wing Single-Engine Type Engine Turbo-Jet
Pending Number Change None Dealer No
Date Change Authorized None Mode S Code 50363116
MFR Year 1958 Fractional Owner NO
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Registered Owner
Name FLIGHT TEST RESEARCH INC
Street 6200 PLATEAU DR
City ENGLEWOOD State COLORADO Zip Code 80111
County ARAPAHOE
Country UNITED STATES
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Airworthiness
Engine Manufacturer ALLIEDSIGN Classification Experimental
Engine Model TFE 731-2B Category Research and Development
A/W Date 09/08/1999
This is the most current Airworthiness Certificate data, however, it may not reflect the current aircraft configuration. For that information, see the aircraft record. A copy can be obtained at
Http://162.58.35.241/e.gov/ND/airrecordsND.asp