Beechcraft B-99 N99TH

Summary

On 29 December 2006 at about 09:00 local time, a Beechcraft B-99 registered N99TH was involved in an accident near Rapid City, South Dakota, United States. One person was on board and one had minor injuries. The aircraft was substantially damaged. The NTSB has published a probable cause for this accident; it is quoted in full below.

Date

29 December 2006 at 09:00

Classification

Accident

Location

Rapid City, South Dakota, United States

Nearest airport

Rapid City Regional (RAP)

Coordinates

44.0533, -103.0619

Aircraft

Beechcraft B-99

Registration

N99TH

Category

Airplane

Engines

2

Operator

Not recorded

Operating rule

Part 135: Air Taxi & Commuter

Phase of flight

Not recorded

Route

Pierre → Rapid City

Aircraft damage

Substantial

Weather

IMC

Light

Night

NTSB number

CHI07LA050

1 person had minor injuries.

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.

Quoted verbatim from the NTSB record. This site does not paraphrase or interpret it.

Read the full NTSB narrative

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. Flight inspections of the instrument approach performed prior to and subsequent to the accident revealed satisfactory performance of both the localizer and glideslope functions. The number one altimeter setting did not match the altimeter setting that was current at the time of the accident. Post accident examination of the altimeters revealed that the number one altimeter read 360 feet high. No determination was made as to whether the discrepency existed prior to impact. However, the pilot did not report any pre-flight discrepencies with regard to the airplane's altimeters. No other anomalies were found or reported with regard to the airplane's structure or systems.

Quoted verbatim from the NTSB record.