C172 pilot reported executing a go-around after encountering wake turbulence on final approach from a nearby Chinook helicopter.
Synopsis
C172 pilot reported executing a go-around after encountering wake turbulence on final approach from a nearby Chinook helicopter.
Narrative
I was on approach for Cecil Field; VQQ; using the RNAV 09R approach. Approach Control cleared me for the approach and handed me off to Tower. While receiving my landing clearing from Tower; I was notified of multiple Chinook helicopters practicing south of my arrival runway. I continued my approach and went visual; out from under the hood; at 500 feet. While at less than a third of a mile on the approach I noticed a helicopter hovering in close proximity to the numbers for the runway. By my visual estimation he was 150 - 250 feet to the south of the numbers over the existing concrete pad. I continued my approach. While over the numbers at about 100 feet my aircraft rolled about 35 degrees left; away from the Chinook; and lost 50 feet of altitude due to a loss of lift. I initiated a go-around and started to climb out after nearly rolling into the ground. During the climb-out I reported wind shear. The Tower remarked that no reports of wind shear had been made and that the wind was calm. He then took my report of +/- how many feet. Once I had fully recovered and turned to the downwind; I had realized that the cause of the blow over and wind shear was wake turbulence from the Chinook. I remarked on frequency that I thought the shear was caused by the Chinook and the Tower said 'ok' and then asked the Chinook to land in place until I was on the ground. The Chinook complied and I executed a long landing and touched down nearly halfway down the runway to ensure I would not have any more issues. After taxiing back to the end of the runway and receiving my IFR clearance; I asked for the Tower's number to talk to him after my flight. We spoke once I was back on the ground at my origin and he and I both concurred that the Chinook had caused my issue. He said that after I had left he switched the active runway to Runway 36 to prevent any more issues with the Chinook. I advised him that there is no scenario that a 172 wins against the wake turbulence of a Chinook and that if it had been a student pilot or if I hadn't reacted as quickly; someone could have died.
NASA callback
Reporter stated they were not aware of any similar incidents at VQQ; but VQQ is not their home airport.
Source: NASA Aviation Safety Reporting System (public domain). Reports are voluntary submissions and are not verified by NASA.