iss ▁X F 8 C - 2 , ▁Bu No ▁A 7 6 7 3 , ▁crashes ▁during ▁a ▁terminal - vel ocity ▁d ive , ▁just ▁days ▁after ▁its ▁first ▁flight . ▁Another ▁source ▁c ites ▁the ▁loss ▁date ▁as ▁ 2 3 ▁December ▁ 1 9 2 8 . ▁▁ 1 9 2 9 ▁ 2 4 ▁January ▁Sur plus ▁Royal ▁A ircraft ▁Factory ▁S . E . 5 a , ▁( original ▁serial ▁unknown ), ▁presented ▁to ▁A via ción ▁Naval ▁( Ar gent ine ▁Naval ▁arm ), ▁E - 1 1 / AC - 2 1 , ▁written - off ▁in ▁crash ▁landing ▁at ▁Cam po ▁S arm iento , ▁Base ▁Naval ▁Puerto ▁Bel gr ano , ▁Argentina ▁when ▁pilot ▁Alf ere z ▁de ▁F rag ata ▁Alberto ▁S aut u ▁Ri estra ▁approaches ▁field ▁too ▁flat ▁and ▁lands ▁short , ▁col laps ing ▁under car riage . ▁Pil ot ▁un in j ured . ▁As ▁the ▁air frame ▁was ▁an ▁ob sol es cent ▁one - only ▁on ▁strength ▁design , ▁with ▁no ▁supporting ▁plans ▁or ▁parts , ▁it ▁is ▁scra pped . ▁ 2 5 ▁February ▁Curt iss ▁XP - 6 ▁Haw k ▁( four th ▁P - 2 , ▁ 2 5 – 4 2 3 , ▁converted ▁with ▁Curt iss ▁V - 1 5 7 0 - 1 ▁engine ), ▁of ▁the ▁ 2 7 th ▁P urs uit ▁Squadron , ▁is ▁destroyed ▁in ▁crash ▁at ▁Self ridge ▁Field , ▁Michigan , ▁after ▁struct ural