Looked up GG STANDBY today.....quote -- (partial content) --

"IN ADDITION TO THE ORIGINAL AIRPORT OF DEPARTURE OR ARRIVAL, THE CUSTOMER MAY CHECK IN AND STANDBY TO/FROM SAME POINT CITIES, ie., IAD/DCA.
PLEASE NOTE STANDBY WOULD NOT BE ALLOWED TO/FROM A SAME CITY POINT IF THE FARE IS VALID TO/FROM A SPECIFIC AIRPORT ONLY. SEE FARE RULE FOR SAME POINT CITIES."

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So......, it turns out this can be done after all. Let's say you hold a ticketed reservation from IAD to ORD but you want to fly from DCA to ORD. We know the normal standby entry in SHARES only works from the same airport.

However, I did ask a veteran CO agent today to look at this statement and tell me how this can be done. She said we would have to add a segment into the PNR -- (example)

UA 123Y 22 APR IADORD 400pm HK1 = [passenger is holding confirmed this segment]
ARNK
UA 400Y 22 APR DCAORD 900pm PD1 = [PD = waitlisted - this is what we add].

Personally I would only recommend this --

1. If the passenger really wants to deal with two airports and has a wide gap of time between the two flights or obviously has missed the earlier flight.
2. If the passenger wants to risk the standby; no guarantee.
3. Or I would encourage the passenger to confirm space (if available) and pay the SDC fee if they choose to go to the other airport thereby eliminating the guesswork. I would not charge the fee during irregular ops.
4. Regarding above GG information, if the same fare is not valid from/to the co-terminal airport, we could disregard this rule during irregular ops.

Apparently the SHARES entry for the PD'd flight 400 would be this --

6:W400/22APRDCA-SMITH/JOHN



Hope this helps ?