Final answer:
The specific code for a pilot who misses their flight and cannot report for duty varies by airline and is governed by the terms of their employment contract or union agreement. The absence could be paid or unpaid, depending on contract terms and policies.
Step-by-step explanation:
If a pilot calls at 1200 to inform they missed their commute flight and will not be able to report for their 1515 pairing, the specific code used to document this occurrence would depend on the airline's policy and the terms of the pilot's employment contract or union agreement.
Typically, airlines have specific codes for reporting absences or delays caused by commuting issues. Whether the pilot has a paid or unpaid option is also determined by contractual agreements and regulations. Some airlines may have a buffer period that allows for paid time off in these cases, while others may consider the absence as unpaid, unless the pilot uses personal leave or another form of paid time off.