Alton Bay Airport (Alton Bay, NH) B18 備註
| A33-01W/19W | Runway 01W/19W has ice in winter plowed to approximately 2730 ft. Ck notams for ice runway conds. |
| A30-01W/19W | Runway 01W threshold approximately 100 ft northeast of floating bandstand. |
| A110-5 | Takeoff and landing using runway 19W prohibited jan - mar. |
| A110-4 | For clearance contact boston approach 603-594-5552. |
| A110-3 | For seaplane prkg and ice runway conds please call airport manager 603-545-2315. |
| A110-2 | All seaplane takeoffs and ldgs must be N of the bandstand. All tvl S of the bandstand must not exceed headway spd. |
| A110-1 | Runway 01W/19W pwrline marked with orange balls 1000 ft S of threshold at S end; less than 30 ft hgt alg roadway. |
| A11 | Public waters of the state of nh. |
