Provides an approved recognition light installation to increase the visibility of the airplane during flight for the Models 500S, s/n 3076 and later, 680W, s/n 1726 thru 1850, 681, 685, 690, 690A, and 690B, all serial numbers. Two kits are available–one with a pulsing function and one without.
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150 Lower Wing Access Hole Kit
Provides approved access hole installation for inspection of lower wing spar (SB 208A) inside of wing between Stringer No. 7 and Stringer No. 8 at Wing Stations 79.00 and 106.36 or for access to gear trunnion fasteners requiring replacement for Models 690, 690A and 690B.
149A Increase of Maximum Altitude to 35,000 Feet
Modifies the Stall Warning system on the 690D to increase the maximum operating altitude to 35,000 feet. Primarily installed on the 690D that have been modified with the -10T STC.
147 Conversion to AlliedSignal TPE331-10T Engines
Not a Custom Kit but an STC
148 Conversion to AlliedSignal TPE331-10T Engines
Not a Custom Kit but an STC
