C Docket No. CL-7773
 0 Award No. 3
 P
 Y SPECIAL BOARD OF ADJUSTMENT N0. 177 (PRR)

 STATEMENT OF CLAIM: Claim of the System Committee of the Brotherhood that:
473, 30th Street Station, Philadelphia, Pennsylvania, Philadelphia Terminal
 Division, be returned to service with all rights unimpaired and be reimbursed
 for all monetary loss sustained. (Docket E-931)

 FINDINGS: Claimant, who was a Group 2 Messenger assigned to the extra list, was
 called on the afternoon of December 24, 1953 to fill an assignment on
 the next afternoon. She first said she would not be available, then in response
 to a second call she said she had made other plans but would try to change them
 and call back. However, she did not call back nor work her assignment. After
 trial, at which she did not appear in person but was represented by her desig
 nated representative, she was dismissed from service on charge and finding of
 failure to work her assignment.

 Her failure is not denied and no excuse or reason for the failure appears except that she "had made other plans.'? The provision of the extra list agreement that an employe, if not available reverts to the bottom of the list, is a seniority provision, not a disciplinary rule and in no way prevents or takes the place of disciplinary action when justified.

 The rule violated being admitted and without exouse, the discipline in view of her record was not capricious or arbitrary.

 AWARD: Claim denied.

 /s/ R. H. Skinner. Jr.
 R. H. Skinner, Jr., Carrier Member S. V. W. Loehr, Employe Member