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Last updated: 7 December 2021
Datum:vrijdag 29 december 2006
Type:Silhouette image of generic BE99 model; specific model in this crash may look slightly different
Beechcraft 99 Airliner
Luchtvaartmaatschappij:Alpine Aviation
Registratie: N99TH
Constructienummer: U-155
Bouwjaar: 1974
Aantal vlieguren:39795
Motoren: 2 Pratt & Whitney Canada PT6A-27
Bemanning:slachtoffers: 0 / inzittenden: 1
Passagiers:slachtoffers: 0 / inzittenden: 0
Totaal:slachtoffers: 0 / inzittenden: 1
Schade: Groot
Gevolgen: Written off (damaged beyond repair)
Plaats:16 km (10 mijl) S of Rapid City Regional Airport, SD (RAP) (   Verenigde Staten)
Fase: Nadering (APR)
Soort vlucht:Vracht
Vliegveld van vertrek:Pierre Airport, SD (PIR/KPIR), Verenigde Staten
Vliegveld van aankomst:Rapid City Regional Airport, SD (RAP/KRAP), Verenigde Staten
Vluchtnummer: 408
The airplane was on an instrument flight rules flight in night instrument meteorological conditions when the accident occurred. The airplane had been cleared for an ILS approach and the pilot elected to use a non-published procedure to intercept the final approach. After becoming established on the final approach, the airplane impacted the ground about 7 miles from the destination airport at an elevation approximately the same as the airport elevation.
Post accident examination of the altimeters revealed that the number one altimeter read 360 feet high. No determination was made as to whether the discrepancy existed prior to impact. However, the pilot did not report any pre-flight discrepancies with regard to the airplane's altimeters.

Probable Cause:

PROBABLE CAUSE: "The pilot's failure to follow the published instrument approach procedure which contributed to his failure to maintain altitude and clearance from terrain during the instrument approach. A factor was the night light condition."

Accident investigation:
Investigating agency: NTSB
Status: Investigation completed
Duration: 1 year and 3 months
Accident number: CHI07LA050
Download report: Summary report

» NTSB Identification: CHI07LA050


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Deze kaart geeft het vliegveld van vetrek weer en de geplande bestemming van de vlucht. De lijn tussen de vliegvelden geeft niet de exacte vliegroute weer.
De afstand tussen Pierre Airport, SD en Rapid City Regional Airport, SD bedraagt 222 km (139 miles).

This information is not presented as the Flight Safety Foundation or the Aviation Safety Network’s opinion as to the cause of the accident. It is preliminary and is based on the facts as they are known at this time.
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