STC SA2109NM

Manited States of SImcrica Department of Transportation Federal Aviation Administration Supplemental Type Certificate Number: SA2109NH This certificate issued to: Ken McHugh Purt 4(a) of the Civil Air Regulations:

Original Product - Type bertificate Number: A-743 Make: Boeing Model: B75N1 Description of Type Design Change: Installation of a Lycoming R-680-13 (R-680-E3B) engine, Hamilton Standard 2B20-329/6135A-9 propeller and a Beech A-10 Cowling per Ken McHugh photographs 1 thru 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 Boeing B75N1, Serial Number 75-6985 only. A copy of this certificate and addendum shall be maintained as part of the permanent records for the modified aircraft.

May 31, 1983 Date Amended:

FEDERAL EVIATION a hirel Medican (Signature)

TRAINIS RATO

i 542 1 47

United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate (Continuation Sheet) Number SA2109NM Supplemental Type Certificate ADDENDUM NO. SA2109NM The conditions and limitations of Type Certificate Data Sheet No. A-743 apply except where superseded by the following:

Supplemental Type Certificate Addendum, which is part of STC SA2109NM, prescribes the conditions and limitations under which the product for which the STC was issued meets the airworthiness requirements of the Civil Air Regulations. A copy of this STC Addendum is required to be maintained as part of the permanent records for the modified aircraft.

Supplemental Type Certificate HOLDER: Ken McHugh.

BOEING B75N1 2 PO-CLB (NORMAL CATEGORY) AS MODIFIED BY STC SA2109NM Engine: Lycoming R-680-13 (R-680-E3B) Fuel: 80/87 octane minimum grade aviation gasoline Engine Limits: Takeoff (5 min.) 2300 rpm (300 Hp) @ sea level Maximum continuous power - 2200 RPM (285 Hp) Propeller and Propeller Limits: Hamilton Standard 2B20-329/6135A-9 Powerplant Instruments: Remark instruments to read as follows:

Oil Temperature:

Red Line 200°F - maximum Tachometer:

Red Line 2300 rpm - maximum Cylinder Head Temperature (Washer-Type Thermocouple):

Red Line 525°F - maximum C. G. Range: See Type Certificate Data Sheet A-743 Maximum Weight: See Type Certificate Data Sheet A-743 Placards: See Type Certificate Data Sheet A-743

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