Mike, talking about invalid NOTAMs, we often see
NAVW: FROM 04/04/01 05:00 TO 04/06/30 21:15 H1914/04
D)HJ
E)AUS 04-04-0080/770/AS5
RADIOSONDE BALLOONS TO BE LAUNCHED FROM 5045N 00119W SOMERTON,
ISLE OF WIGHT, DURING DAYLIGHT HOURS ONLY AND SUBJECT TO FORECAST
METEOROLOGICAL CONDITIONS.
CONTACT FOR LAUNCH TIMES, TEL 01983 294141.
F)SFC G)UNL
Rumour at the airfield is that this doesn't happen and hasn't for years - so I called the number to find out; you get Alenia Marconi Systems in Cowes who haven't got the faintest idea what this NOTAM is about or why their number is on it (I was redirected several times, but nobody I talked to has any idea - i've got somebody asking around, and they'll call me back if they find anything). It seems that either the number is totally wrong or the NOTAM is some ghost in the system and doesn't apply any more. At the very least, if you called and asked for launch times they wouldn't be able to help.
Anyway, one more for the list ... and I'm obviously the first person in years to call
HTH