19980616035479A

On June 16, 1998, a GA-680-FL, N446JR, crashed while on an IFR instrument approach to the Helena, Montana airport. The aircraft was operated by corporate air as a FAR 135 scheduled U.S. Mail cargo flight on a round trip to kalispell, Montana. The pilot reported procedure turn inbound at 7,000 feet, and then descending out of 5,500 feet. The aircraft impacted in mountainous terrain at approximately the 5,200 foot level 1.6 miles outside the final approach fix, which has a crossing altitude of 6,741 feet. The aircraft was destroyed by impact and post crash fire. The pilot received fatal injuries. (.19) on June 16, 1998, approximately 1805 mountain daylight time, an aero commander 680FL, N446JR, impacted the terrain while on approach to runway 27 at Helena Regional Airport, Helena, Montana. The commercial pilot, who was the sole occupant, received fatal injuries and the aircraft was destroyed. The 14 CFR part 135 cargo flight, which departed kallispell, Montana, about 65 minutes earlier, was operating in instrument meteorological conditions at the time of the accident. The aircraft, which was owned and operated by corporate air, of billings, Montana, was on an IFR flight plan, and the ELT transmissions that were triggered by the impact played a role in locating the wreckage. The pilot, who had been cleared to fly the ILS approach to runway 27, was found to have impacted terrain about 5, 150 feet MSL, approximately 1.5 miles east of the hauser non-directional beacon (NDB). According to the altitude restrictions on the ILS runway 27 approach plate, the altitude of the aircraft at that location should have been 7,000 feet MSL. (.4)the pilot of the part 135 cargo flight was executing the 'full' ILS runway 27 approach at Helena Regional Airport in a non-radar environment. Although the approach calls for the pilot to maintain 7,000 feet until intercepting the glideslope, the aircraft impacted the terrain at 5,300 about 1.5 miles prior to reaching the point where the pilot should have crossed the hauser NDB at an altitude of 6,741 feet. According to the approach plate, the aircraft should not have descended to an altitude below 5,400 feet until reaching the outer marker, which is located about five and one-half miles west of the impact site. (-23)on June 16, 1998,a GA-680-FL, N446JR, crashed while on an IFR instrument approach to the Helena, MT. Airport. The a/c was operated by corporate air as a FAR 135 scheduled U.S.mail cargo flight on a round trip to kalispell, MT. The pilot reported procedure turn inbound at 7,000 feet, and then descending out of 5,500 feet. The a/c impacted in mountainous terrain at approx. the 5,200 foot level 1.6 miles outside the final approach fix, which has a crossing altitude of 6,741 feet. The a/c was destroyed by impact and p ost crash fire. The pilot received fatal injuries.