Air carrier dispatcher reported that a delayed flight departed with an inappropriate alternate due t...

Narrative:

Flight was dispatched with ZZZ listed as a destination alternate. After taking a delay for a late inbound aircraft; this delayed the flight out past the time for ZZZ to be a legal alternate for his eta as altitude mins na when tower is closed. This was an oversight by the dispatcher who was dealing with a weight and balance issue out of ZZZ1 and ZZZ2; reroutes out of ZZZ3; and holding for ZZZ4. I attempted to have other dispatchers on duty to possibly assist me in shedding workload; but they were also saturated with similar issues to my own. At the time; most dispatchers had 10-15 flights airborne each. Adding additional staffing; by either dispatchers or support personnel; would have prevented the saturation. Additionally; a thorough review of the notams before issuing the release time would have prevented the issue. I did check the weather conditions an additional time but missed the NOTAM.

Original NASA ASRS Text

Title: Air carrier Dispatcher reported that a delayed flight departed with an inappropriate alternate due to a NOTAM not reviewed during planning. Staffing issues were cited as contributing factors.

Narrative: Flight was dispatched with ZZZ listed as a destination alternate. After taking a delay for a late inbound aircraft; this delayed the flight out past the time for ZZZ to be a legal alternate for his eta as ALT MINS NA WHEN TOWER IS CLOSED. This was an oversight by the dispatcher who was dealing with a weight and balance issue out of ZZZ1 and ZZZ2; reroutes out of ZZZ3; and holding for ZZZ4. I attempted to have other dispatchers on duty to possibly assist me in shedding workload; but they were also saturated with similar issues to my own. At the time; most dispatchers had 10-15 flights airborne each. Adding additional staffing; by either dispatchers or support personnel; would have prevented the saturation. Additionally; a thorough review of the NOTAMs before issuing the release time would have prevented the issue. I did check the weather conditions an additional time but missed the NOTAM.

Data retrieved from NASA's ASRS site and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.

Attributes
ACN	1567114
Time
Date	201808
Local Time Of Day	1801-2400
Place
Locale Reference	ZZZ.Airport
State Reference	US
Aircraft 1
Make Model Name	A320
Operating Under FAR Part	Part 121
Flight Phase	Parked
Flight Plan	IFR
Person 1
Function	Dispatcher
Qualification	Dispatch Dispatcher
Events
Anomaly	Deviation - Procedural Published Material / Policy Deviation - Procedural FAR

Air carrier dispatcher reported that a delayed flight departed with an inappropriate alternate due to a NOTAM not reviewed during planning. Staffing issues were cited as contributing factors.