Holding may be necessary for a variety of reasons. It may be used by Fisk Approach Control to ensure that the proper in-trail spacing is established prior to passing Fisk, the airport may be too congested to allow for arrivals at that time, or there may be a mass arrival with dozens of aircraft landing at Wittman Regional Airport. Other previously coordinated or unanticipated events may also require ATC to "sterilize" the airspace in the immediate vicinity of the airport.
Aircraft holding is something we neither like nor want to do, but there are times when it becomes unavoidable. Please be patient. We'll get you to the airport as soon as we're able.
Both of the special holding patterns are left turns only. Maintain your altitude (1,800' or 2,300' MSL) and circle the respective shorelines counterclockwise, following the aircraft ahead until advised to leave the hold. Maintain ½-mile in-trail separation from the aircraft you are following while in the hold.
ATC personnel at Fisk on 120.7 will advise when holding is necessary.
Aircraft at or beyond Ripon
If holding is necessary and you are directly over or you have passed Ripon, continue to Fisk and then enter the Rush Lake holding pattern as depicted in the AirVenture NOTAM.
Aircraft will proceed to Fisk, upon reaching Fisk turn left heading 270º and proceed to the north shore of Rush Lake - continuing with left turns around the lake - then proceed northeast over the railroad tracks back to Fisk.
Aircraft should fly single file, at either 1800' MSL and 90 knots or at 2300' MSL and 135 knots - maintaining ½-mile in-trail separation with the aircraft ahead.
Aircraft approaching Ripon
If holding is necessary and you are approaching Ripon look for traffic to follow and enter the hold at Green Lake 4 miles southwest of Ripon as depicted in the AirVenture NOTAM.
Holding pattern saturation
If the Green Lake holding pattern appears, or is reported, to be nearing capacity, stay clear and proceed no further. Instead check for traffic and make left turns over a point on the ground and continue to hold, or divert to an alternate airport, until ATC advises you to proceed or to transition into one of the published holding patterns.
Holding altitudes / airspeeds
Maintain 90 knots or maximum cruise speed if below 90 knots and 1,800' msl.
If unable, maintain 135 knots and 2,300' msl.
Clearing holding patterns
ATC will "clear" the holding patterns in a systematic manner. When ATC advises aircraft to depart a specific holding pattern, those aircraft shall transition to the arrival procedure in the following manner:
Rush Lake: Rejoin railroad tracks at the southeast corner of Rush Lake and proceed northeast towards Fisk.
Green Lake: Upon reaching the southeast corner of Green Lake proceed directly to Ripon and follow the railroad tracks northeast towards Fisk.
Others: Proceed to Ripon and follow the railroad tracks northeast towards Fisk.
Proceeding beyond the hold
Ensure that you have a minimum of ½-mile in-trail separation behind the aircraft that you are following.
If you have to "S" - turn to follow the aircraft ahead of you, break off the procedure and return to Ripon to find another aircraft to follow that matches your speed.
We need your cooperation
All of this activity is quite a challenge and, of course, we need your cooperation!
Experiencing a problem or just tired of holding?
Please do not stretch the truth in an attempt to beat the system. At a minimum, this will only cause trouble for you and will inconvenience the many others who are playing by the rules.
Please be patient
The Fisk controllers will get you back on your way just as soon as we're able.