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ArchiveAugust 8, 2026Mastermind
Case File · Audit · No. 043

Daily Casefile · Audit

The Uplift Record of Northern Passage Air

9 min

Northern Passage Air submits monthly catering and fuel-uplift records to its head office in Edmonton so that costs can be allocated against individual flight numbers. Station Agent Gord Pallister has filed the October 1974 record covering five service events at Yellowknife Airport and one at the Hay River staging point. The Edmonton comptroller has flagged the record because one service date appears inconsistent with corroborating documents held at head office. You are asked to identify which line carries the wrong date and which record proves it.

The scene

Northern Passage Air, a regional carrier operating turboprop service out of Yellowknife, Northwest Territories, Canada, autumn 1974

Source documents

  • Northern Passage Air October 1974 Flight Movement Register
  • Hay River Catering Co-operative — Invoice HR-0094
  • Letter from Northern Passage Air Edmonton Comptroller to Yellowknife Station, 01 Nov 1974
  • Yellowknife Airport Fuel Farm Monthly Meter Survey — October 1974

Play today’s Audit.

This case first aired on August 8, 2026. A fresh audit runs every morning — same rules, five minutes, one solution.