STC SA2129NM

United States of America Department of Transportation - Federal Aviation Administration Supplemental Type Certificate Number SA2129NM

This certificate, issued to Air Mods N.W.

1424 Ridge Ave Snohomish, WA 98290

Part 23 of the Federal Aviation Regulation,

Original ProductType Certificate Number: A11EA Make: Gulfstream American Model: AA-1C

Description of the Type Design Change: Installation of a Lycoming 0-320-E2G, AA-5A engine mount, cowling, air induction and a McCauley 1C172/SBTM/7359 propeller in accordance with, per Ameromod Corporation photographs 1 through 3.

Limitations and Conditions: Data pertaining to this modification are considered inadequate for duplication in other aircraft. This approval is limited to the installation in Gulfstream America n AA-1C, Serial Number AA1C-00119 only. A copy of this Certificate and Addendum shall be maintained as part of the permanent records for the modified aircraft.

Date of application: April 22, 1983 Date reissued: April 8, 1991; August 20, 2019 Date of issuance: July 19, 1983 Date amended:

FAA FORM 8110-2 (5/14) PAGE 1 OF 4 PAGES By direction of the Administrator

(Signature)

Manager, Seattle ACO Branch (Title)

Transfer the ownership of Supplemental Type Certificate Number

to (Name of Transferee)

(Address of Transferee)

(Number and Street)

(City, State, and ZIP Code)

from (Name of Grantor) (Print or Type)

(Address of Grantor)

(Number and Street)

(City, State, and ZIP Code)

Signature of Grantor (In Ink):

U.S. GPO: 1987-763-289

United States of America Department of Transportation - Federal Aviation Administration Supplemental Type Certificate (Continuation Sheet) Number SA2129NM SUPPLEMENTAL TYPE CERTIFICATE ADDENDUM NO. SA2129NM

The conditions and limitations of Type Certificate Data Sheet (TCDS) No. A11EA apply except where superseded by the following:

This Supplemental Type Certificate Addendum, which is part of STC SA2129NM, prescribes the conditions and limitations under which the product for which the STC was issued meets the airworthiness requirements of the Federal Aviation Regulations. A copy of this STC Addendum is required to b e maintained as part of the permanent records for the modified aircraft.

SUPPLEMENTAL TYPE CERTIFICATE HOLDER: Air Mods N.W.

1. GULFSTREAM AMERICAN AA-1C, 2PCLM (UTILITY CATEGORY) AS MODIFIED BY STC SA2129NM

Engine: Lycoming 0-320-E2G

Fuel: 80/87 octane minimum grade aviation gasoline

Engine Limits: Takeoff 2700 RPM (150 HP) @ sea level Maximum continuous-2700 RPM full throttle Propeller and Propeller Limits: McCauley 1C172/SBTM/7359 Diameter: 74” Maximum; 70” Minimum Spinner: Gulfstream American SK143-1

Powerplant Instruments: Mark Instruments as follows:

Oil Temperature Red Line 245°F – maximum

Oil Pressure Green Arc 60 to 90 psi - normal operating range Yellow Arc 25 to 60 psi – caution Red Line 90 psi maximum

Tachometer:

Red Line 2700 rpm – maximum

Fuel Pressure Green Arc.50 to 8.0 psi – normal operating range Red Line 8.0 psi – maximum at sea level

FAA FORM 8110-2 (5/14) PAGE 3 OF 4 PAGES

United States of America Department of Transportation - Federal Aviation Administration Supplemental Type Certificate (Continuation Sheet) This certificate has been reissued to replace the original certificate reported lost.

Number SA2129NM SUPPLEMENTAL TYPE CERTIFICATE ADDENDUM NO. SA2129NM

Powerplant Instruments (Cont’d): Cylinder Head Temperature (Well-type Thermocouple):

Red Line 500° F – Maximum

C.G. Range: See Type Certificate Data Sheet A11EA

Maximum Weight: See Type Certificate Data Sheet A11EA

Placards: The following placard is to be in front and in full view of the pilot:

-NOTICE-

AIRCRAFT MODIFIED WITH LYCOMING 0-320-E2G ENGINE (150 H.P. @ 2700 RPM) CONSULT APPROVED STC ADDENDUM SA2129NM

AIRCRAFT BALLAST REQUIRED ON ALL FLIGHTS.

PERFORM WEIGHT & BALANCE ANALYSIS PRIOR TO EACH FLIGHT.

Install placard by fuel filler ports to read:

80/87 OCTANE MIN. GRADE AVIATION GASOLINE

-END-

FAA FORM 8110-2 (5/14) PAGE 4 OF 4 PAGES