[en] Measurements are reported of the inhomogeneous gap states in a superconducting Al film driven far from thermal equilibrium by tunnel injection using Pb/Bi-I-Al(2)-I-Al(1) double-tunnel junctions in which the gap parameter D/sub() A12/ is appreciably smaller than D/sub() Al1/. Quasiparticles are injected in the middle Al(2) film by a Pb/Bi-I-Al(2) injector. Above a certain threshold current, an intrinsic instability is observed, followed by the development of distinct gap states. For injection at the gap-sum voltage of the injector characteristic, we observe a two-gap state similar to previous observations, while for injection above the gap-sum voltage, we observe the subsequent appearance of the multiple-gap regions at a series of threshold currents. The results are consistently interpreted by an instability model developed based on the Scalapino-Huberman model