Narrative:

I contacted tower approximately 6 NM northwest and requested an established VFR helicopter route arrival from the north. (The route involves descending to 1;600 ft MSL (500 ft AGL) in preparation for a mid-field crossing at the tower location on a heading perpendicular to the runway heading with a left turn inside of the fixed wing pattern and a termination to either the runway the local controller was working several VFR aircraft in the traffic pattern at the time of the call. I reported that I had listened to the current ATIS information and continued inbound to the VFR reporting point north of the tower. While approximately 2 miles out from the airfield; I heard a citation jet reporting inbound on the VOR-a procedure from the southwest. The pilot of the jet also requested a missed approach and a low approach over the runway. The controller asked if the pilot was VFR or IFR and the pilot replied that he was IFR. The controller advised the pilot that he would have to cancel IFR and proceed in VFR conditions. I did not hear the controller issue my aircraft as traffic at any time to the citation pilot. She did issue the traffic call out to me as I was approaching the control tower on the north side of the airport. I expected the citation pilot to climb to the VFR pattern altitude after crossing the VOR on the south side of the airport in order to make a right traffic pattern for runway 26. I could not see the jet upon the initial traffic call out and immediately notified the tower that I did not have the jet in sight. Because the controller did not respond to my call; I advised the tower that I was turning east to avoid the jet. At the time of the turn I saw the citation jet flying right at my position in the clean configuration. The aircraft made no heading correction to avoid me and was actually below my altitude (approximately 1;300 MSL) which is only 200-300 AGL. I hesitated several seconds again and requested clarification of my clearance to cross over the tower and used the words; 'confirm that helicopter X is cleared to cross and cleared to land on the south parallel taxiway'. The controller replied 'affirmative; cleared to land.' at no time did I hear any restrictions issued to the citation pilot nor did I hear any traffic issued to the citation regarding my aircraft that was now going to land on a taxiway south of and parallel to the runway that the jet was going to overfly. As I turned final along the established noise abatement flight pattern for our aircraft; I was surprised to see the citation jet make a high speed low level pass down the runway adjacent to me. His estimated altitude was less than 100 ft and he was in the 'clean' configuration - gear up; flaps up. His speed was much faster than a 'low approach' airspeed and the configuration was not what I expected for a VFR missed approach to a busy general aviation airport on a spring afternoon that hosts a high amount of student pilot activity. As he overflew the entire length of the runway at that low altitude; he commented that he was 'doing it for the tower's benefit'. I felt that the controller was negligent in not instructing the jet pilot to avoid flying through the VFR traffic pattern at a low altitude and the citation pilot was negligent for his impromptu 'air show'. There was no need for the pilot to descend below the pattern altitude once the IFR flight plan was canceled just prior to the map. In this situation; he was now VFR and needed to comply with the pattern altitude due to the VFR traffic in the pattern and a helicopter arrival from the north. It was too close for me and my crew.

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Original NASA ASRS Text

Title: VFR helicopter pilot arriving perpendicular to the active runways reports NMAC with VFR CE525 on low missed approach.

Narrative: I contacted Tower approximately 6 NM northwest and requested an established VFR helicopter route arrival from the north. (The route involves descending to 1;600 FT MSL (500 FT AGL) in preparation for a mid-field crossing at the tower location on a heading perpendicular to the Runway Heading with a left turn inside of the fixed wing pattern and a termination to either the Runway The Local Controller was working several VFR aircraft in the traffic pattern at the time of the call. I reported that I had listened to the current ATIS information and continued inbound to the VFR reporting point north of the tower. While approximately 2 miles out from the airfield; I heard a Citation jet reporting inbound on the VOR-A procedure from the southwest. The pilot of the jet also requested a missed approach and a low approach over the runway. The Controller asked if the pilot was VFR or IFR and the pilot replied that he was IFR. The Controller advised the pilot that he would have to cancel IFR and proceed in VFR conditions. I did not hear the Controller issue my aircraft as traffic at any time to the Citation pilot. She did issue the traffic call out to me as I was approaching the Control Tower on the north side of the airport. I expected the Citation pilot to climb to the VFR pattern altitude after crossing the VOR on the south side of the airport in order to make a right traffic pattern for Runway 26. I could not see the jet upon the initial traffic call out and immediately notified the Tower that I did not have the jet in sight. Because the Controller did not respond to my call; I advised the Tower that I was turning east to avoid the jet. At the time of the turn I saw the Citation jet flying right at my position in the clean configuration. The aircraft made no heading correction to avoid me and was actually below my altitude (approximately 1;300 MSL) which is only 200-300 AGL. I hesitated several seconds again and requested clarification of my clearance to cross over the tower and used the words; 'confirm that helicopter X is cleared to cross and cleared to land on the south parallel taxiway'. The Controller replied 'affirmative; cleared to land.' At no time did I hear any restrictions issued to the Citation pilot nor did I hear any traffic issued to the Citation regarding my aircraft that was now going to land on a taxiway south of and parallel to the runway that the jet was going to overfly. As I turned final along the established noise abatement flight pattern for our aircraft; I was surprised to see the Citation jet make a high speed low level pass down the runway adjacent to me. His estimated altitude was less than 100 FT and he was in the 'clean' configuration - gear up; flaps up. His speed was much faster than a 'low approach' airspeed and the configuration was not what I expected for a VFR missed approach to a busy general aviation airport on a spring afternoon that hosts a high amount of student pilot activity. As he overflew the entire length of the runway at that low altitude; he commented that he was 'doing it for the tower's benefit'. I felt that the Controller was negligent in not instructing the jet pilot to avoid flying through the VFR traffic pattern at a low altitude and the Citation pilot was negligent for his impromptu 'air show'. There was no need for the pilot to descend below the pattern altitude once the IFR flight plan was canceled just prior to the MAP. In this situation; he was now VFR and needed to comply with the pattern altitude due to the VFR traffic in the pattern and a helicopter arrival from the north. It was too close for me and my crew.

Data retrieved from NASA's ASRS site as of April 2012 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.