3 0 ▁into ▁a ▁High ▁Technology ▁Test ▁Bed ▁( HT TB ). ▁This ▁test ▁aircraft ▁set ▁numerous ▁short ▁take off ▁and ▁landing ▁performance ▁records ▁and ▁significantly ▁expanded ▁the ▁database ▁for ▁future ▁derivatives ▁of ▁the ▁C - 1 3 0 . ▁Mod ifications ▁made ▁to ▁the ▁HT TB ▁included ▁extended ▁ch ord ▁a iler ons , ▁a ▁long ▁ch ord ▁rud der , ▁fast - act ing ▁double - sl otted ▁trailing ▁edge ▁f laps , ▁a ▁high - cam ber ▁wing ▁leading ▁edge ▁extension , ▁a ▁larger ▁d ors al ▁fin ▁and ▁d ors al ▁fins , ▁the ▁addition ▁of ▁three ▁spo iler ▁pan els ▁to ▁each ▁wing ▁upper ▁surface , ▁a ▁long - stroke ▁main ▁and ▁nose ▁landing ▁g ear ▁system , ▁and ▁changes ▁to ▁the ▁flight ▁controls ▁and ▁a ▁change ▁from ▁direct ▁mechanical ▁link ages ▁assist ed ▁by ▁hyd ra ul ic ▁boost , ▁to ▁fully ▁power ed ▁controls , ▁in ▁which ▁the ▁mechanical ▁link ages ▁from ▁the ▁flight ▁station ▁controls ▁operated ▁only ▁the ▁hyd ra ul ic ▁control ▁val ves ▁of ▁the ▁appropriate ▁boost ▁unit . ▁The ▁HT TB ▁first ▁fle w ▁on ▁ 1 9 ▁June ▁ 1 9 8 4 , ▁with ▁civil ▁registration ▁of ▁N 1 3 0 X . ▁After ▁demonstr ating ▁many ▁new ▁techn ologies , ▁some ▁of ▁which ▁were ▁applied ▁to ▁the ▁C - 1 3 0 J , ▁the ▁HT TB ▁was ▁lost ▁in ▁a ▁fatal ▁accident ▁on ▁ 3 ▁February ▁ 1 9 9 3 , ▁at ▁D obb ins ▁Air ▁Reserve