Is a simple act of contrition sufficient to keep one from hell?

I was taught that while in danger of death, a simple ACT OF CONTRITION was sufficient to remove the risk of Hell, until a proper confession was made. Is this a fact or a speculation? If not, what does a traveler do, if the opportunity for confession is missed?

Dearn T,

Not a simple, but a perfect act of the contrition is needed if one is in the state of mortal sin. A perfect act of contrition is made with a pure act of sorrow for sin because of one’s love for God, without any concern for oneself. Such is not necessary when one makes use of the Sacrament of Penance.

Fr. Vincent Serpa, O.P.

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