Markii hore Boeing Model 69, waxaa lagu dhiirrigeliyay natiijooyinka tijaabooyinka FB-6, oo ay ku shaqeyneysay Pratt & Whitney R-1340B Wasp radial engine. Boeing waxay ku talaabsatay inay ku isticmaasho matoorkan dagaalyahan si gaar ah loogu talagalay hawlgallada xambaara, iyadoo la adeegsanayo isla jir-dhismeedka tuubada alxanka iyo baalasha alwaaxda sida Model 15, iyo ku darista spinner weyn si loo yareeyo iska caabbinta hawada agagaarka mashiinka (tan waxaa laga saaray wax soo saarka). Hubka wuxuu ahaa laba.30 in (7.62 mm) qoryaha mashiinka, ama mid.30 in iyo mid.50 in (12.7 mm); garabka wuxuu lahaa qalabka hoose ee ilaa afar 25 lb (11 kg) bambooyin, oo lagu daray shan meelood oo ka mid ah ayaa laga laalaadsan karaa jirka. Su'aal: Maxaa dhiirrigeliyay naqshadda Boeing Model 69?
natiijada tijaabooyinka FB-6