| Significance | Code | Meaning |
|---|
| FIR | EGTT | London FIR | | | / | | | Qualifiers | Q | | | | WL | Free balloon ascent | | | LW | will take place | | | / | | | Traffic | I | IFR traffic affected | | | V | VFR traffic affected | | | / | | | Purpose | N | For immediate attention of aircraft operators | | | B | For inclusion in Preflight Infomation Bulletins | | | O | Operationally significant for IFR flights | | | / | | | Scope | A | Aerodrome information | | | W | Navigational Warning | | | / | | | From flight level | 000 | Surface | | | / | | | Up to flight level | 999 | Unlimited | | | / | | | Centre Latitude | 5213N | 52° 13' North' | | Centre Longitude | 00006E | 0° 6' East | | Radius of area affected | 002 | 2 nautical miles |
| | MET BALLOON RELEASE / S WITHIN 1NM RADIUS OF 521248N 0000553E ( CAMBRIDGE ). THIS ACTIVITY WILL NOT BE WHOLLY CONTAINED WITHIN LATERAL DIMENSION AS NOTIFIED.ASSOCIATED EQUIPMENT WILL SUBSEQUENTLY DESCEND BY PARACHUTE.FOR INFO 07821 191216.AR-2026-175 / 01. |
|
