Non-standard is one of those tricky terms that could mean anything from a trivial change to a detail critical enough to change your whole game plan-or ruin your day if ignored.
Pilots must meticulously review chart notes for "non-standard" details concerning both instrument departures and alternate airport minimums, as these exceptions are critical for safety.
For departures, the absence of a listed Obstacle Departure Procedure (ODP) implies a "diverse departure," while published ODPs outline specific maneuvers required for safe climb, especially crucial when departing uncontrolled fields.
When selecting an alternate airport, standard weather minimums apply unless an "inverse A" symbol on an approach plate indicates non-standard alternate minimums, necessitating a careful review of specific criteria.
These critical "non-standard" details are found in different sections of Aeronav and Jeppesen charts, requiring pilots to know where to look and be aware of potential chart discrepancies or outdated information.
You’ve got to mind the details when it comes to takeoff and alternate notes. But it doesn’t help when the details themselves don’t make logical sense. Non-standard is one of those tricky terms that could mean anything from a trivial change to a detail critical enough to change your whole game plan—or ruin your day if ignored.
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