EXHIBIT 31.1

    CERTIFICATION PURSUANT TO RULE 13a-14(a) or 15d-14(a) OF THE SECURITIES
        EXCHANGE ACT OF 1934, AS ADOPTED PURSUANT TO SECTION 302 OF THE
                           SARBANES-OXLEY ACT OF 2002

I, James T. Barry, certify that:

     1.   I  have  reviewed  this  quarterly  report  on  Form  10-Q  of  PASSUR
          Aerospace, Inc.;

     2.   Based  on  my  knowledge,  this  quarterly report does not contain any
          untrue  statement  of a material fact or omit to state a material fact
          necessary  to  make the statements made, in light of the circumstances
          under  which such statements were made, not misleading with respect to
          the period covered by this report;

     3.   Based  on  my knowledge, the financial statements, and other financial
          information  included  in this quarterly report, fairly present in all
          material  respects the financial condition, results of operations, and
          cash  flows of the registrant as of, and for, the periods presented in
          this quarterly report;

     4.   The registrant's other certifying officer(s) and I are responsible for
          establishing  and  maintaining  disclosure controls and procedures (as
          defined  in  Exchange  Act Rules 13a-15(e) and 15d-15(e)) and internal
          control  over  financial  reporting  (as defined in Exchange Act Rules
          13a-15(f) and 15d-15(f)) for the registrant and have:

          a.   Designed  such disclosure controls and procedures, or caused such
               disclosure  controls  and  procedures  to  be  designed under our
               supervision,  to ensure that material information relating to the
               registrant,  including its consolidated subsidiary, is made known
               to  us  by  others within those entities, particularly during the
               period in which this quarterly report is being prepared;

          b.   Designed  such  internal  control  over  financial  reporting, or
               caused  such  internal  control  over  financial  reporting to be
               designed  under  our supervision, to provide reasonable assurance
               regarding   the   reliability  of  financial  reporting  and  the
               preparation  of  financial  statements  for  external purposes in
               accordance with generally accepted accounting principles;

          c.   Evaluated   the  effectiveness  of  the  registrant's  disclosure
               controls  and  procedures  and presented in this quarterly report
               our   conclusions  about  the  effectiveness  of  the  disclosure
               controls  and  procedures, as of the end of the period covered by
               this quarterly report based on such evaluation; and

          d.   Disclosed  in this report any change in the registrant's internal
               control   over  financial  reporting  that  occurred  during  the
               registrant's  most recent fiscal quarter (the registrant's fourth
               fiscal  quarter  in  the  case  of  an  annual  report)  that has
               materially  affected,  or  is  reasonably  likely  to  materially
               affect,   the   registrant's   internal  control  over  financial
               reporting; and

     5.   The  registrant's  other  certifying  officer(s) and I have disclosed,
          based on our most recent evaluation of internal control over financial
          reporting, to the registrant's auditors and the audit committee of the
          registrant's  board of directors (or persons performing the equivalent
          functions):

          a.   All  significant  deficiencies  and  material  weaknesses  in the
               design  or operation of internal control over financial reporting
               which  are reasonably likely to adversely affect the registrant's
               ability  to  record,  process,  summarize,  and  report financial
               information; and

          b.   Any  fraud,  whether or not material, that involves management or
               other  employees  who have a significant role in the registrant's
               internal control over financial reporting.

    Date:  March 17, 2011
                                                        By: /s/ James T. Barry
                                                        ----------------------
                                                        James T. Barry
                                                        Chief Executive Officer