STC SA1553NM
FAA DRS lists SA1553NM as Current · Reissued, held by Avcon Industries Inc, for Learjet Learjet 55C, Learjet Learjet 55B, and Learjet Learjet 55. Recorded change: Installation of one or two 90 US gallons fuselage auxiliary fuel tank(s), in accordance with Branson List of Drawings and Documents, No. 61A000, Revision B, FAA approved May 16, 1983, or later FAA approved revision. Snapshot dated June 30, 2026.
Recorded modification
What the FAA record covers
Installation of one or two 90 US gallons fuselage auxiliary fuel tank(s), in accordance with Branson List of Drawings and Documents, No. 61A000, Revision B, FAA approved May 16, 1983, or later FAA approved revision.
SA1553NM identifies the approval, recorded holder, named aircraft, and modification scope. It does not confirm kit availability, serial-number effectivity, data rights, price, or installation authority.
Applicability
Aircraft named in FAA DRS
Named aircraft: Learjet Learjet 55C, Learjet Learjet 55B, and Learjet Learjet 55. Confirm the approved model list, serial effectivity, configuration, and certificate revision.
Buyer checks
Confirm before sourcing
- 01Does it cover the exact Learjet Learjet 55C and Learjet Learjet 55B, and 1 more aircraft configuration model, serial range, and configuration?
- 02Which tanks, plumbing, usable-fuel assumptions, and inspections apply?
- 03Who can legally supply the design data, kit, instructions, and ICAs?
- 04What parts, labor, conformity, and return-to-service work are excluded?
Related fuel systems STCs
Modify the wing fuel tanks access cover installation by replacing the existing rubstrip and seal with a new encapsulated wire mesh gasket and a new seal.
FAA holder: Aviation Devices & Electronic Components LLC
Modify the wing fuel tanks access cover installation by replacing the existing rubstrip and seal with a new encapsulated wire mesh gasket and a new seal.
FAA holder: Aviation Devices & Electronic Components LLC
Remove drain plug, Cessna Part Number AN814-3DL, from the fuel selector valve, and replace with CAV-180 (MT-1072-77) or CAV-180H-4 (CM-172-77) (*Model: C-172N Serial Nos.: 17261445, 17267585 through 17269309 (1977 Model), 17261578, 17269310 through 17271034 (1978 Model), \t(Except 17270050), 17271035 through 17272884 (1979 Model), 17270050, 17272885 through 17274009 (1980 Model)).
FAA holder: Saf-Air Products Inc.
Remove drain plug, Cessna Part Number MS20913-10 or MS20913-ID, from the fuel selector valve, and replace with CAV-110D (MT-1082) or CAV-110H-4D (CM-1082).
FAA holder: Saf-Air Products Inc.