Narrative:

While cruising at 28;000 feet and an estimated 300 KIAS; the left wing rubber seal located on the top of the wing root came loose causing a loud and rapid onset vibration. I immediately reduced power to slow and we determined that a divert was the best course of action to take. I made a slow speed (approximately 200 KIAS) and mild rate of descent which resulted in an uneventful landing.the post flight inspection initially did not reveal any damage to the rubber seal; only after fairly close inspection were we able to see the seal had come loose about half way back from the leading edge. The seal separated for an estimated 3 feet; but without airflow over the wing; it appeared nearly normal.my suggestion is to pass along to other hawker crew members that a very close inspection of the seal may be in order to determine if it is still entirely secured to the wing.

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Original NASA ASRS Text

Title: HS-125-800XPC Captain reported the left wing rubber wing root seal came loose in flight.

Narrative: While cruising at 28;000 feet and an estimated 300 KIAS; the left wing rubber seal located on the top of the wing root came loose causing a loud and rapid onset vibration. I immediately reduced power to slow and we determined that a divert was the best course of action to take. I made a slow speed (approximately 200 KIAS) and mild rate of descent which resulted in an uneventful landing.The post flight inspection initially did not reveal any damage to the rubber seal; only after fairly close inspection were we able to see the seal had come loose about half way back from the leading edge. The seal separated for an estimated 3 feet; but without airflow over the wing; it appeared nearly normal.My suggestion is to pass along to other Hawker crew members that a very close inspection of the seal may be in order to determine if it is still entirely secured to the wing.

Data retrieved from NASA's ASRS site 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.