STC SA2-57

United States of America Bepartment of'Cransportation—federal 2toiation Administration Supplemental 'Cgpe Certificate <LSK<€#msV€wSA2-57 E*a«tt*lva Aircraft Sarviea Dlv. of Coopar Ind«, Inc.

3900 Love Field Drive Delias. Texas 75235 JfoJ£yfi0Jde&<jCtw^w ^y'i«<^!!&i3*:^<s»'«<>7«'^^ 4fl sdltjhe' CtV** iSle-OMta&&nA/.

723 Lockheed 18 of surface combustion Heater, P/N 20C65, Typ« 8200 (d«r«t»d to ISO BTU) in accordance with data listed OB Dallas Aero Service Drawing Uit entitled "Combustion Heater Installation", Rev. I dated 4/8/57, or Rav. t dated 4/24/58 u»ad in conjunction with Rev. I dated 4/8/57, -4ria<>nsan&j?n<>n' Aircraft using Airline Training, Inc. Airplane Flight Manual oust t»a* CAA Approved Bavi«ion dated 1/20/58 by Dallaa Aaro Service with thiB nodif ication.

Aircraft using any other Flight Manual which Includes a haater oparation section mat hava GAA Approved Revision to be eligible with this nodi f teat ion.

Coopatibility of thlt Modification with otiwr pravlowaly approved nodlf ieatlona must b« determined by til* insteller.

, ^^^as^ev^rnj.mM&eWsa^ S$drniM4&&<a£?r-^&^he' 11, 1956 ^^^^/ §/2&/57; 5/5/5t; 8/8/58; 12/5/68;

11/12/69; 2/23/72; 6/28/78 Ravialon 7 January 23, 1957 _ (Signature)

r. Don P. Wateon 8 ' Chief, Engineering and Manufacturing Branch

alteration of this certificate w punishable by a fine of not exceeding $1 ,000, or imprisonment not exceeding 3 years, or both.

fAAFo«M 81 10-2 (10-68)

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